The present invention achieves a structure capable of reducing contact surface pressure of a contact portion between an input member and an engagement element, a contact portion between an output member and the engagement element, or both of the contact portions, in addition to reducing an increase in manufacturing cost. The present invention comprises: a pressed member 2 that has a pressed surface 6; and an input member 3, an output member 4, and an engagement element 5 that are disposed radially inward of the pressed surface 6. The engagement element 5 has a pressing surface 34 facing the pressed surface 6, an input-side engaged part 35 capable of engaging with an input-side engaging part 13 of the input member 3, and an output-side engaged part 36 capable of engaging with an output-side engaging part 21 of the output member 4. The engagement element is also disposed to be movable in a first direction that is a far-and-near direction with respect to the pressed surface 6, and has protruding curved surface parts 37, 38 in a portion to be engaged with the input-side engaging part 13 in the input-side engaged part 35 and/or a portion to be engaged with the output-side engaging part 21 in the output-side engaged part 36.
A ball bearing according to the present invention comprises an outer ring 1 and an inner ring 2, a plurality of balls 3 that are provided between the outer ring 1 and the inner ring 2 so as to be able to roll, a cage 4 that has pockets 4a that respectively hold the balls 3, shield plates 5 that close a bearing space S that is between the outer ring 1 and the inner ring 2 on respective sides in the axial direction, and grease G that is sealed in the bearing space S. In an initial sealed state, the grease G forms a seamless, continuous ring in the circumferential direction between an inner circumferential surface of the outer ring 1 and an outer circumferential surface of the inner ring 2 and contacts the balls 3 and an inner surface of the shield plates 5. The present invention thereby reduces noise and torque while maintaining the adhesion of the grease.
F16C 33/66 - Special parts or details in view of lubrication
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
There are provided a rolling bearing and a rolling element production method, which can improve a flacking life. A rolling bearing includes an inner ring (2), an outer ring (3), and a rolling element (4). The rolling element (4) has a hardness of HRC61.1 or higher and a residual austenite content of 31 volt or less, and a ratio of a hardness of the rolling element (4) to a hardness of the inner ring (2) and the outer ring (3) is 1 or higher.
C21D 9/36 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ballsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for rollers
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
A nut of the present disclosure includes a cylindrical nut main body penetrated by a screw shaft, a plurality of inner peripheral raceway surfaces and a plurality of S-shaped groove surfaces recessed to an outer side in a radial direction from an inner peripheral surface of the nut main body, and a flange protruding to the outer side in the radial direction from an outer peripheral surface of the nut main body. The flange includes at least one or more partial flanges extending only in a part of a circumferential direction along the outer peripheral surface of the nut main body.
Provided is a ball screw device capable of holding a sufficient amount of lubricant in a circulation groove. This ball screw device comprises: a screw shaft having a shaft-side spiral groove in the outer peripheral surface thereof; a nut 3 having, in the inner peripheral surface thereof, a nut-side spiral groove 7 and a substantially S-shaped circulation groove 9 connecting an end point and a start point of a spiral load path 8 composed of the shaft-side spiral groove 5 and the nut-side spiral groove 7; and a plurality of balls 4 arranged on the inner side of the load path 8 and the circulation groove 9. The circulation groove 9 has, in the surface thereof, a recessed lubricant holding part 11 for holding the lubricant.
According to the present invention, the exact size and depth of defects on or inside the raceway surface of a rolling bearing, and even the type of defect, can be detected with high precision in a non-destructive manner, even for parts having a complicated shape such as the groove portion raceway surface of a small-diameter bearing. This method for detecting defects in a rolling bearing is a method for detecting defects on or inside the raceway surface of the rolling bearing, and includes a UT flaw detection step for performing ultrasonic flaw detection with respect to the raceway surface after finish polishing. Furthermore, this method for detecting the deterioration state of a rolling bearing includes detecting the deterioration state of the rolling bearing from defects in a surface layer portion of the raceway surface detected by the method for detecting defects in the rolling bearing, with respect to the raceway surface after the rolling bearing has been rotated for a predetermined time.
G01N 29/06 - Visualisation of the interior, e.g. acoustic microscopy
G01N 23/18 - Investigating the presence of defects or foreign matter
G01N 23/046 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
G01N 23/083 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
Provided is a radial roller bearing that is capable of preventing falling of a roller and is capable of improving handleability and load resistance. The radial roller bearing comprises: a plurality of rollers that are arranged along the circumferential direction and that roll on at least one of the inner circumferential surface of a housing and the outer circumferential surface of a shaft; and a lubricant-containing polymer that holds the plurality of rollers.
F16C 33/66 - Special parts or details in view of lubrication
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
A grease composition includes: (A) a trimellitic acid ester, (B1) a phenyl α naphthylamine, (B2) an alkyl diphenylamine, (C1) a succinic acid half ester, (C2) a sorbitan monoester, and (D) a urea-based thickener. This grease composition is excellent in anti-flaking, rust prevention, and oxidation resistance properties, and furthermore, a fatigue life of a rolling device and the like in which the grease is enclosed can be maintained for a long time.
C10M 169/00 - Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
C10M 115/08 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
C10M 129/76 - Esters containing free hydroxy or carboxyl groups
C10M 133/12 - Amines, e.g. polyalkylene polyaminesQuaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
C10M 141/06 - Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups , each of these compounds being essential at least one of them being an organic nitrogen-containing compound
C10N 30/10 - Inhibition of oxidation, e.g. anti-oxidants
C10N 30/12 - Inhibition of corrosion, e.g. anti-rust agents, anti-corrosives
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
F16C 33/66 - Special parts or details in view of lubrication
9.
BALL SCREW AND METHOD FOR MANUFACTURING NUT FOR BALL SCREW
This ball screw is provided with a screw shaft, a nut (1), and a plurality of balls disposed between the nut (1) and the screw shaft. The nut (1) has: a helical groove (20) which is formed in a spiral shape on the inner peripheral surface (11) of the nut (1) and in which a plurality of balls roll; and a return groove (30) which is formed on the inner peripheral surface (11) and returns a ball from a first end (21) of the helical groove (20) to a second end of the helical groove (20). The return groove (30) is formed to have a depth dimension larger than the depth dimension of the helical groove (20). The return groove (30) has, at a boundary between the helical groove (20) and the return groove (30), a connection end part (33) formed so as to have, as a cross section, at least one of an inclined surface shape and a curved surface shape that extends from the bottom surface of the return groove (30) to the bottom surface of the helical groove (20).
A rolling bearing includes a first raceway ring having a first raceway surface, a second raceway ring having a second raceway surface, and a plurality of rolling elements held between the first raceway surface and the second raceway surface in a freely rollable manner. An oxide film containing Fe3O4 is provided on at least one of surfaces of the first raceway surface and the second raceway surface and surfaces of the rolling elements. A film thickness of the oxide film is 0.6 μm or more and 2.0 μm or less. A crystallite size calculated from a peak attributable to the (311) plane of the Fe3O4 is 2.5 nm or more and 3.2 nm or less.
F16C 19/10 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
This rolling-bearing seal member is formed from only an elastic material without a core metal, and has projections formed on an axial end face at a plurality of positions over the entire circumference or intermittently in the circumferential direction. Accordingly, even if a plurality of said rolling-bearing seal members formed from only an elastic material without a core metal are placed as stacked together, the rolling-bearing seal members are less susceptible to adhering to one another and it is easier to individually take one rolling-bearing seal member when assembling a rolling-bearing seal member to a rolling bearing.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
A brake device 1 comprises: a belt-like band member 10 that surrounds an outer peripheral surface of a shaft member 2 rotating around an axis Ax and fastens the shaft member 2 by being deformed; a drive device 20 that is disposed on the band member 10 and executes driving so as to cause deformation of the band member 10; a first contact part 31 that comes into contact with a first end part 10a of the band member 10 to stop rotation of the band member 10 when the band member 10 rotates in a first direction D1 around the axis Ax; and a second contact part 32 that comes into contact with a second end part 10b of the band member 10 to stop rotation of the band member 10 when the band member 10 rotates around the axis Ax in a second direction D2 opposite the first direction D1.
F16D 49/10 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360° mechanically actuated
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
In a torque sensor (1), a sleeve (21) is an annular member mounted on a first rotating member. An intermediate member (26) is an annular member placed on an outer circumferential face of the sleeve (21). A magnet (25) is an annular member placed on an outer circumferential face of the intermediate member (26). A yoke (35) is mounted on a second rotating member and faces the magnet (25) in a radial direction. A rotating member connecting part (211) of the sleeve (21) is cylindrical and is in contact with the first rotating member. An intermediate member connecting part (215) is at a position shifted with respect to the rotating member connecting part (211) in an axial direction parallel to a central axis Z. An outer diameter (E219) of a sleeve end (219), which is an end of the intermediate member connecting part (215) opposite from the rotating member connecting part (211), is smaller than a minimum inner diameter (125) of the magnet (25).
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
14.
TWO-SPEED TRANSMISSION AND ELECTRIC VEHICLE DRIVE DEVICE
The present invention realizes a structure of a two-speed transmission that can switch the speed reduction ratio between an input side and an output side in two levels, and that can be easily miniaturized. A two-speed transmission 1 comprises: a speed reduction unit 6 having a carrier 19 that rotates integrally with a transmission input element 4, a first sun element 20, a second sun element 21 that rotates integrally with a transmission output element 5, a first intermediate element 22 that is rotatably supported on the carrier 19 and engages with the first sun element 20 so as to transmit torque, and a plurality of second intermediate elements 23 that rotate integrally with the first intermediate element 22 and engage with the second sun element 21 so as to transmit torque; a first shift mechanism 7 that switches between a cutting mode in which the carrier 19 and the first sun element 20 are relatively rotatable and a connection mode in which the carrier 19 and the first sun element 20 are not relatively rotatable; and a second shift mechanism 8 that switches between a free mode in which the first sun element 20 is rotatable relative to a structure element 28 and a lock mode in which the first sun element 20 is not rotatable.
The electric friction engagement device has a function of detecting a phase in a rotational direction of a drive cam when an output torque or current value of a shift motor begins to increase at a rate of increase equal to or greater than a first threshold value as a piston touch point and a function of detecting a phase in the rotational direction of the drive cam when the rate of increase becomes equal to or less than a second threshold value after exceeding the piston touch point as a clutch touch point.
In a thrust needle roller bearing, even in an environment where an amount of lubricating oil is small, the amount of lubricating oil is held and seizure is prevented. The thrust needle roller bearing includes a plurality of needle rollers, a bearing ring (31) having an annular raceway surface (31a) on which the needle rollers roll, and a cage that rollably holds the needle rollers, in which an oil repellent film (41a) is formed by oil repellent treatment on a portion of the raceway surface (31a) other than a portion in contact with the needle rollers.
F16C 19/30 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
F16C 19/46 - Needle bearings with one row of needles
A multi-row tapered roller bearing (20) for rotatably supporting an axle (50) of a railway vehicle comprises: an outer seal member (30) having an outer cylindrical part (31) attached to an inner diameter part (21b) of an outer ring (21), and a standing plate part (32) extending radially inward from a width-direction outer end of the outer cylindrical part (31); a small-diameter step part (26) formed in a large-diameter flange part (25) of an inner ring (23) adjacent to an inner diameter end (32a) of the standing plate part (32); and an annular recess (61) provided at an edge of the inner peripheral surface of a small-diameter flange part (27) of one inner ring (23), said edge being on an inner-diameter-side of an inner-ring small-end surface (27a). The inner diameter end (32a) of the standing plate part (32) adjacent to the outer periphery of the small-diameter step part (26) faces, in the axle direction, a side wall surface (26b) between the large-diameter flange part (25) and the small-diameter step part (26) of the inner ring (23).
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
This linear guide is provided with: a guide rail having a raceway surface; a slider having rolling elements that roll on the raceway surface; and a case that houses a lubricant supply member impregnated with a lubricant and that presses the lubricant supply member so as to make contact with the raceway surface. The lubricant supply member has: a pair of sleeve parts each having a contact section pressed against the raceway surface; and a connection part connecting the upper sections of the pair of sleeve parts. The connection part includes: at least one thin section having a thickness reduced in the vertical direction; and pressed sections that are disposed above and outward toward the right and left of the thin section, and are pressed outward toward the right and left by a pressing part provided to the case.
A reverse input blocking clutch (1) comprises: an input member (2); an output member (3); a pair of engagement elements (5, 5); press reception surfaces (77) that are pressed by the engagement elements (5); a first bearing mechanism (7); and a second bearing mechanism (8). The first bearing mechanism (7) rotatably supports the input member (2). The second bearing mechanism (8) rotatably supports the output member (3). An outer ring of at least one of the first bearing mechanism (7) and the second bearing mechanism (8) is an integrated outer ring in which the press reception surface (77) and an outer ring raceway groove in which balls of a ball bearing roll are integrally provided. The integrated outer ring has, at the groove bottom of the outer ring raceway groove, a radial thickness size that is less than or equal to the diameter of the balls.
F16D 43/20 - Internally controlled automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
F16D 63/00 - Brakes not otherwise provided forBrakes combining more than one of the types of groups
This reverse input blocking clutch (1) comprises: an input member (2) having an input shaft (21); an output member (3) having an output shaft (31); a pressed surface (62); a pair of engaging elements (5); a first bearing mechanism (7) that rotatably supports the input member (2); and a second bearing mechanism (8) that rotatably supports the output member (3). The outer ring of the first bearing mechanism (7) and the second bearing mechanism (8) is an integrated outer ring (61) in which a first outer ring raceway groove (73) in which a first rolling element (70) of the first bearing mechanism (7) rolls, a second outer ring raceway groove (83) in which a second rolling element (80) of the second bearing mechanism (8) rolls, and the pressed surface (62) are integrally provided.
F16D 41/10 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
A clutch device (1) comprises: an input member (2); an output member (nut (8)); a pressed surface (45); a pair of engaging elements (5); a first bearing mechanism (6) that rotatably supports the output member; and a ball screw (3). The ball screw (3) has a rotary member (nut (8)) mounted to rotate integrally with the output member, and a linear motion member (screw shaft (9)) screwed with the rotary member. An outer ring of the first bearing mechanism (6) is an integrated outer ring (61) in which the pressed surface (45) and a first outer ring raceway groove (63) in which a first rolling element (60) of the first bearing mechanism (6) rolls are integrally provided.
A lubricant supply control method for a device that lubricates a plurality of portions using a lubricant includes: measuring an impedance of an electric circuit including the plurality of portions by applying an AC voltage to the electric circuit; deriving an oil film thickness and a breakage rate of an oil film between the plurality of portions based on the measured impedance; and controlling at least one of a supply amount and a supply timing of the lubricant to the device based on the derived oil film thickness and breakage rate of the oil film so that a lubrication state between the plurality of portions becomes a predetermined lubrication state.
F16N 29/02 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
F16C 33/66 - Special parts or details in view of lubrication
A quenching method is provided for workpieces including respective laces and having respective workpiece through-holes. A quenching method includes: a step of preparing a press quenching device capable of switching between a restraint state in which workpieces are restrained and an unrestraint state in which the workpieces are not restrained; a step of arranging a plurality of heated workpieces in a press quenching device that is in the unrestraint state; a step of restraining the restraint target areas of the workpieces by the press quenching device by causing the press quenching device to switch from the unrestraint state to the restraint state; and a step of cooling the restrained workpieces.
Forming a face spline comprises: a step of pressing a pressing die (39) against a caulking part (19a) with a first relative motion between the pressing die (39) and the caulking part (19a) around a reference axis (C); and a step of pressing the pressing die (39) against the caulking part (19a) with a second relative motion between the pressing die (39) and the caulking part (19a) around the reference axis (C). The first relative motion moves a partial machining position on the caulking part (19a) in a first circumferential direction. The second relative motion moves the partial machining position on the caulking part (19a) in a second circumferential direction opposite to the first circumferential direction.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
A wheel structure 1 comprises: a drive wheel 20 that rotates about a rotation axis Axr with respect to a body part 10; a vehicle body attachment part 30 that is capable of movement with respect to the body part 10 along a first axis Ax1; and a link mechanism part 40. The link mechanism part 40 is provided with: a first link member 41 that has a first connection part 41a which is connected to the body part 10 in such a manner as to be rotatable about a second axis Ax2, and a second connection part 41b to which a first non-driving wheel 50 is attached; a second link member 42 that has a fourth connection part 42a which is connected in such a manner as to be rotatable about a fourth axis Ax4 between the first connection part 41a and the second connection part 41b, and a fifth connection part 42b which is connected to the vehicle body attachment part 30 in such a manner as to be rotatable about a fifth axis Ax5; and a third link member 43 and a fourth link member 44 that have shapes which are in line symmetry with the first link member 41 and the second link member 42, with the first axis Ax1 serving as the axis of symmetry.
B62D 61/06 - Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels
Provided is a monitoring system that can monitor a belt conveyor device and detect an abnormality. The monitoring system comprises: wireless tags provided on idler rollers that guide an endless belt for conveying an object to be conveyed; and a data acquisition device that acquires data from the wireless tags, the idler rollers being to-be-monitored targets. Each wireless tag includes: a storage unit that stores identification information; a temperature sensor that detects the temperature of the idler roller and outputs temperature data according to the temperature; and a communication unit that transmits the identification information and the temperature data output by the temperature sensor. On the basis of the temperature data and the identification information acquired by the data acquisition device, the monitoring system monitors the to-be-monitored targets conveyed by the endless belt.
B65G 39/16 - Arrangements of rollers mounted on framework for aligning belts or chains
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
27.
ELECTRIC VEHICLE, AND METHOD FOR CONTROLLING ELECTRIC VEHICLE DRIVE DEVICE
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
This EV unit comprises: a housing that is provided with a motor stator and that is electrically grounded; a shaft that is provided with a motor rotor and a gear of a speed reducer unit; a pair of motor bearings that pivotally support the shaft at positions on both axial-direction sides of the motor rotor; and a pair of speed reducer bearings that pivotally support the shaft at positions on both axial-direction sides of the gear. The shaft is electrically connected to the housing at a position on the reverse side from the motor rotor when viewed from the motor bearings. Each of the pair of motor bearings is an insulating bearing which is electrically insulating. Each of the pair of speed reducer bearings is a conductive bearing which is conductive.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
This spindle device comprises: a housing (2); a rolling bearing (21) that rotatably supports a rotating shaft (3) relative to the housing (2); a first outer ring spacer (41) that is disposed axially forward of the rolling bearing (21), which is exposed to a liquid atmosphere, and that positions the outer ring of the rolling bearing (21) in the axial direction relative to the housing (2); a first inner ring spacer (45) that is disposed radially inward of the first outer ring spacer (41) and that positions the inner ring of the rolling bearing (21) in the axial direction relative to the rotating shaft (3); grease reservoir recesses (42, 46) provided on an inner peripheral surface (41c) of the first outer ring spacer (41) and an outer peripheral surface (45c) of the first inner ring spacer (45), which face each other in proximity to each other; a surface treatment layer (50) having a water-repellent and oil-repellent effect applied to the surfaces of the first outer ring spacer (41) and the first inner ring spacer (45); and grease (60) filled in the grease reservoir recesses (42, 46).
A circulation module (40) in a ball screw (10) comprises: a pair of circulation units (41, 41), in which a nut insertion part (42) to be fitted into a through hole (32) of a nut (30) and a direction-changing part (43) that converts the direction of motion of balls are provided continuously, and which constitute a partial path of a ball circulation path; and a connection securing unit (50) that is disposed between the pair of circulation units (41, 41) and constitutes a remaining partial path of the ball circulation path that communicates with the partial path of the circulation units (41). The circulation units (41) each have pressure-receiving portions respectively provided at the ends of the direction-changing part (43) on the side opposite from the nut insertion part (42). The connection securing unit (50) has a securing part secured to the nut (30) and pressure-applying parts which are provided at both open-end sides of the remaining partial path to respectively press against the pressure-receiving portions.
A structure is achieved that is capable of switching between enabling and disabling a rotation lock function at the time of a reverse input, said function locking rotation of an output member if a rotation torque has been reversely input into the output member. An output member 4 includes: a first element 33 which has an output-side engaging part 29; a second element 34 which has a torque output part 30, which is arranged coaxially with the first element 33, and which is supported so as to be relatively rotatable with respect to the first element 33; and a coupling member bridged between the first element 33 and the second element 34 so as to be capable of engaging with or disengaging from at least the first element 33 and/or the second element 34.
F16D 41/10 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
[Problem] To provide a wheel drive unit that facilitates reduction of the manufacturing cost of a sealing structure for sealing, from radially outside, an engagement region between a hub-side face spline and a joint-side face spline. [Solution] A sealing structure 53 includes an O-ring 43 and an annular cover member 44. The O-ring 43 is locked in a locking groove 45 provided in one of the outer peripheral surface of a hub 5 and the outer peripheral surface of a joint outer ring 22. The annular cover member 44 has: a proximal-side tubular portion 47 which is disposed on the radially outer side of an engagement region between a hub-side face spline 12 and a joint-side face spline 25 and is externally fitted and fixed to a fitting surface portion 46 provided on the other of the outer peripheral surface of the hub 5 and the outer peripheral surface of the joint outer ring 22; and a distal-side tubular portion 48 having an inner peripheral surface in elastic contact with the O ring 43.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
F16J 15/10 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
In this ball screw, steel balls are divided into first steel balls arranged in a rolling path close to one end of a nut and second steel balls arranged in a rolling path close to the other end on the opposite side to the one end, and the direction of preload applied to the first and second steel balls changes where: if the nut is subjected to a compressional stress in the axial direction when a load in the axial direction is applied to the one end of the nut with respect to the screw shaft, the preload applied to the first and second steel balls is directed inward; and if the nut is subjected to a tensile stress in the axial direction when a load in the axial direction is applied to the one end of the nut with respect to the screw shaft, the preload applied to the first and second steel balls is directed outward.
F16H 25/24 - Elements essential to such mechanisms, e.g. screws, nuts
35.
BALL ARRANGEMENT METHOD FOR BALL BEARING, MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR BALL BEARING, AND MANUFACTURING METHOD FOR MACHINE AND VEHICLE
A ball arrangement method for a ball bearing includes following steps executed in order: a ball insertion step of inserting a plurality of balls in one region along a circumferential direction of an annular space formed between an inner ring and an outer ring; a flow stop step of disposing a flow stop jig outside the one region of the annular space in the circumferential direction to keep the plurality of inserted balls in the one region; a block dividing step of disposing a block dividing jig to divide the plurality of balls into groups in the annular space; and a ball dividing step of, from a state in which the flow stop jig and the block dividing jig are disposed in the annular space, while removing the flow stop jig and the block dividing jig from the annular space, sequentially inserting tip ends of a plurality of work arrows protruded in accordance with the number of balls between the plurality of balls in an axial direction to arrange the plurality of balls at equal intervals in the circumferential direction.
A support mechanism (40) for rotatably supporting both axial ends of a screw shaft (21) comprises: a bearing unit (41) which has a movement-side bearing housing (51) and a pair of angular contact ball bearings (53) that are internally fitted to the movement-side bearing housing (51); a support base (43) which is provided to one side of the bearing unit (41) in the axial direction and through which the screw shaft (21) is inserted; and a housing position adjustment mechanism (60) which is provided between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (60) is provided with: a support-base-side member (61) which is provided to the support base (43) side; a bearing-housing-side member (62) which is provided to the bearing housing (51) side and which is axially movable relative to the support-base-side member (61); a foam member (90) which is disposed in a pressure chamber (66) that is formed between the support-base-side member (61) and the bearing-housing-side member (62), and which has a foam core layer and a solid skin layer that covers the periphery of the foam core layer; and a working fluid (70) which is filled into spaces outside the foam member (90) in the pressure chamber (66). Thus, it is possible to continuously and stably maintain support rigidity in the axial direction even if the axial length of the rotary shaft changes due to the effects of heat.
A support mechanism (30) that rotatably supports both axial-direction ends of a screw shaft (21) is provided with a bearing unit (41) having a moving-side bearing housing (51) and a pair of angular contact ball bearings (33), a support base (43), and a housing position adjustment mechanism (44) disposed between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (44) is provided with: a support-base-side member (61) provided on the support-base (43) side; a bearing-housing-side member (62) that is provided on the bearing-housing (51) side and is capable of moving relative to the support-base-side member (61) in the axial direction; a partition member (83) that is disposed within a space (66) formed between the support-base-side member (61) and the bearing-housing-side member (62), the partition member (83) dividing the space (66) in the axial direction into a first space (66A) and a second space (66B); a plurality of disc springs (70) and a first working fluid (80) that are accommodated in a compressed state in the first space (66A); and a foam member (90) and a second working fluid (81) that are accommodated in a compressed state in the second space (66B). This makes it possible to continuously and stably maintain axial support rigidity even if the axial length of a rotating shaft changes due to the influence of heat.
A state diagnosis method for a bearing device including a plurality of rolling bearings which are electrically connected, the method includes measuring an impedance of the plurality of rolling bearings as a whole by applying a voltage to the plurality of rolling bearings by an AC power supply while changing a frequency, deriving an impedance of each of the plurality of rolling bearings by fitting the impedance measured in the measurement step based on an equivalent circuit in which the plurality of rolling bearings are connected in series, and diagnosing a state of each of the plurality of rolling bearings based on the impedance of each of the plurality of rolling bearings derived in the derivation step.
A ball screw device according to the present disclosure comprises a screw shaft, a nut, and a plurality of balls. The outer circumferential surface of the screw shaft is provided with an S-shaped groove surface, and the screw shaft has a corner portion where the outer circumferential surface, and an outer circumferential raceway surface and the S-shaped groove surface, intersect. The ball screw device satisfies expression (1), where Dw is the diameter of the balls, Rn is the radius of a circular arc forming a groove-perpendicular cross section of an inner circumferential raceway surface of the nut, α is the contact angle of the balls with respect to the inner circumferential raceway surface of the nut, θ1 is an angle within the groove-perpendicular cross section representing an effective range of the inner circumferential raceway surface of the nut, Dm is the diameter of a circle joining the centers of the plurality of balls disposed in the raceway, Ds is the diameter of the outer circumferential surface of the screw shaft, Q is the radial-direction distance between the outer circumferential surface of the screw shaft and a portion of the corner part positioned most on the inside in the radial direction if the vertex of the corner part of the screw shaft is shaved, and k (k>1) is a correction coefficient.
This cage for a deep groove ball bearing is made of resin and includes a first pocket for preventing the cage from falling off in a radial direction from the bearing, and a second pocket for preventing the cage from falling off in an axial direction from the bearing. The first pocket has the same cross-sectional shape along the axial direction, and includes, on at least a radially inner edge side or outer edge side, a narrowing portion that narrows an interval between a pair of adjacent pillar portions. The second pocket has the same cross-sectional shape along the radial direction, and includes a claw portion that narrows the interval between a pair of adjacent pillar portions at an edge portion on the opposite side from an annular portion.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
41.
ROTATION SUPPORT DEVICE, AND SUPPORT MECHANISM POSITION ADJUSTMENT MECHANISM FOR SHAFT SUPPORT DEVICE
A support mechanism (30) for rotatably supporting an axial end portion of a screw shaft (21) comprises: a bearing unit (41) having a movement-side bearing housing (51) and a pair of angular ball bearings (33B); a support base (43); and a housing position adjustment mechanism (44) disposed between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (44) comprises: a support-base-side member (61) provided on the support base (43) side; a bearing-housing-side member (62) provided on the bearing housing (51) side and capable of relative movement in the axial direction with respect to the support-base-side member (61); a working fluid accommodated in a pressure chamber (66) formed between the support-base-side member (61) and the bearing-housing-side member (62), in a storage chamber (71) formed in the support-base-side member or the bearing-housing-side member, and in an orifice (72) through which the pressure chamber (66) and the storage chamber (71) communicate; a disc spring (80) disposed inside the pressure chamber (66) in a state of being compressed between the opposing axial end surfaces of the support-base-side member (61) and the bearing-housing-side member (62); and a foam member (90) accommodated in the storage chamber (71). Through this configuration, axial-direction support rigidity can be continuously and stably maintained even if the axial length of a screw shaft or rotary shaft changes due to the effects of heat.
F16C 35/078 - Mounting of ball or roller bearingsFixing them onto shaft or in housing using pressure fluid as mounting aid
B23Q 5/40 - Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
F16C 25/08 - Ball or roller bearings self-adjusting
F16C 35/07 - Fixing them on the shaft or housing with interposition of an element
F16C 35/12 - Rigid support of bearing unitsHousings, e.g. caps, covers for spindles with ball or roller bearings
A ball screw device includes: a nut having a first track path; an outer circumferential screw shaft having a second track path and a third track path; a plurality of first balls disposed between the first track path and the second track path; an inner circumferential screw shaft having a fourth track path; a plurality of second balls disposed between the third track path and the fourth track path; a first stopper fixed closer to an end of the outer circumferential screw shaft in a first direction; a second stopper fixed closer to an end of the inner circumferential screw shaft in a second direction; and a third stopper fixed closer to an end of the outer circumferential screw shaft in the second direction. The track of the first ball and the track of the second ball are helixes running in a same direction.
[Problem] To provide a structure facilitating miniaturization of a drive device for an electric vehicle incorporating a two-stage transmission. [Solution] A two-stage transmission 2 is provided with a transmission input element 5, a transmission output element 6, a planetary reduction mechanism 7, a first shift mechanism 8, and a second shift mechanism 9. The planetary reduction mechanism 7 is disposed between the transmission input element 5 and the transmission output element 6 in the axial direction of the transmission input element 5.
The present invention efficiently reads data stored in RFID tags of a plurality of packing boxes. This data reading system comprises: a non-metal packing box that can store a metal product; an RFID tag that is provided inside the packing box and stores data pertaining to the metal product; and a data acquisition device that acquires data from the RFID tag. The packing box has adjacent surface parts adjacent to other packing boxes and side surface parts other than the adjacent surface parts. The RFID tag is provided between the metal product stored in the packing box and the side surface part.
B65G 1/137 - Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
Provided is a magnetostrictive torque measurement device that makes it easy to ensure accuracy of torque measurement, sensitivity of torque measurement, or both. A magnetostrictive torque measurement device 1 comprises: a rotary shaft 2 that has a detected part 4 that has magnetostrictive characteristics at a portion in the axial direction of an outer circumferential surface; and a magnetostrictive torque sensor 3. The magnetostrictive torque sensor 3 includes: a holder 5 that is formed from a synthetic resin, has an inner circumferential surface 7 that is loosely fitted in the radial direction onto the outside of the detected part 4 so as not to rattle, and does not rotate even during use; and a coil unit 6 that is held by the holder 5 and has a detection part 12 that includes a plurality of detection coils 11 (11a–11d).
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
46.
SEALING DEVICE AND SEALING DEVICE-EQUIPPED BEARING UNIT
The present invention provides a sealing device-equipped bearing unit that has lubricant retention properties and that lowers torque. A sealing device (15) is constituted by: seal lips (19a, 19b, 19c) composed of an elastic material; and a mating member (slinger 17) with which the seal lips (19a, 19b, 19c) are in sliding contact. A plurality of dimples (20) are formed in the surface of the region of the mating member (slinger 17) that is in sliding contact with at least the seal lips (19a, 19b, 19c), each of the dimples (20) being constituted by a recess (21) further recessed than the surface of the mating member (slinger 17) and a first protrusion (22) protruding from the surface of the mating member (slinger 17) and surrounding the recess (21). Furthermore, a sealing device-equipped bearing unit (10) is provided with the abovementioned sealing device (15).
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
F16J 15/324 - Arrangements for lubrication or cooling of the sealing itself
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
F16J 15/3256 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
47.
METHOD FOR ACQUIRING CORRECTION VALUE FOR TORQUE SENSOR, AND METHOD FOR MEASURING TORQUE OF ROTATING SHAFT
The method comprises a step of: actually measuring an output values at a first and second reference temperatures for a torque sensor for which a correction value is to be acquired; determining a provisional correction function, which is a linear function showing a relationship between a temperature and the provisional correction values at the first and second reference temperatures, with using the output values at the first and second reference temperatures as the provisional correction values at the first and second reference temperatures; substituting at least one non-reference temperature into the provisional correction function to obtain a provisional correction value at the non-reference temperature, and correcting the provisional correction value at the non-reference temperature by a correction amount at the non-reference temperature obtained in advance, to obtain a correction value at the at least one non-reference temperature.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
The present invention realizes an electric vehicle comprising a structure with which it is possible to reliably lock the rotation of a driving wheel when the vehicle stops. In a state in which torque with which a vehicle-stop position can be maintained is output by a driving motor 4 of each of one or more driving devices 2 among a plurality of driving devices 2, the output torque of a driving motor 4 of the remaining driving device 2 among the plurality of driving devices 2 is set to 0, as a result of which a pressing surface of an engagement element of a reverse input blocking clutch 6 of the remaining driving device 2 is brought into contact with a pressed surface, and then the output torque of a driving motor 4 of one or a plurality of the driving devices 2 among the one or more driving devices 2 is set to 0, as a result of which a pressing surface of an engaging element of a reverse input blocking clutch 6 of the one or of each of the plurality of driving devices 2 is brought into contact with a pressed surface.
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
49.
ASSEMBLING METHOD FOR MAGNETOSTRICTIVE TORQUE SENSOR, AND MAGNETOSTRICTIVE TORQUE SENSOR
Realized is an assembling method for a magnetostrictive torque sensor that can easily facilitate reduction in manufacturing costs. When the proportion of a body 12 of a flexible board 8 that faces the outer circumferential surface of a rotary shaft 2 is within a predetermined range in the case where the body 12 faces the whole circumference of the outer circumferential surface of the rotary shaft 2 is defined as 100%, a common flexible board 8 having the same length in the circumferential direction of the body 12 is used.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
50.
METHOD FOR ASSEMBLING MAGNETOSTRICTIVE TORQUE SENSOR AND MAGNETOSTRICTIVE TORQUE SENSOR
When assembling a magnetostrictive torque sensor comprising a holder having a bobbin portion arranged around a rotating shaft to be measured, and a flexible substrate having a main body portion arranged around the bobbin portion and provided with a detection portion configured by a plurality of detection coils, a common flexible substrate having the same length in a circumferential direction of the main body portion is used when a percentage of the main body portion facing an outer circumferential surface of the rotating shaft is in a predetermined range, with a case where the main body portion of the flexible substrate faces the outer circumferential surface of the rotating shaft over an entire circumference being considered as 100%.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
51.
CRIMPING JOINING METHOD, METHOD FOR MANUFACTURING HUB UNIT BEARING, METHOD FOR MANUFACTURING VEHICLE, METHOD FOR MANUFACTURING MACHINE DEVICE, AND CRIMPING DEVICE
B21D 39/00 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders
B21K 1/05 - Making machine elements cages for bearings
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
Provided is a magnetostrictive torque measurement device with which accuracy and sensitivity of torque measurement are easily secured. A magnetostrictive torque measurement device 1 comprises: a support member 4 which is arranged around a rotary shaft 2 rotatably supported with respect to a structural element which does not rotate even in use, so as to be incapable of rotating relative to the structural element; a support bearing 5 which is arranged between the rotary shaft 2 and the support member 4 and supports the support member 4 so as to be able to rotate relative to the rotary shaft 2; and a magnetostrictive torque sensor 6 which is supported by the support member 4, and has an opposing surface 15 which is adjacent to and facing the outer peripheral surface of the rotary shaft 2, and a detection part 17 which is arranged on the outer diameter side of the opposing surface 15 and comprises a plurality of detection coils.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
54.
SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD
The present invention provides a signal processing device and a signal processing method, which are capable of improving determination accuracy when determining a lubrication state of a rolling device by threshold value determination on a vibration-state physical quantity indicating a vibration state of the rolling device. The present invention is provided with: an oil-film state physical-quantity calculation unit 51 that, on the basis of a voltage signal applied between an inner ring 111 and an outer ring 112 of a bearing 11, calculates an oil-film state physical-quantity, which is a physical quantity related to an oil film of the bearing 11; and a determination threshold-value calculation unit 53 that calculates a vibration-state physical quantity, which is a physical quantity related to vibration of the bearing 11, on the basis of a measurement signal acquired by a sensor 2, and calculates a determination threshold value used for determining a lubrication state of the bearing 11 on the basis of correlation between the vibration-state physical quantity and the oil-film state physical quantity.
This state monitoring method for a mechanical device that performs a rotation operation comprises an acquisition step for acquiring rotation speed data and vibration data during a rotation operation of the mechanical device, a conversion step for converting the vibration data from a time domain to an angle domain by using the acquired rotation speed data and the vibration data, a re-conversion step for reconverting the converted vibration data into a time domain based on a predetermined reference speed, and a diagnosis step for diagnosing a state of the mechanical device by using the converted vibration data. In the conversion step, when a section where a rotation speed is zero or approximately equal to zero is included in the rotation speed data, the rotation speed data is corrected so that the rotation speed is varied in the section, and then the vibration data is converted into an angle domain.
A two-speed transmission includes: a function of detecting a phase in a rotational direction of a drive cam when an output torque or current value of a shift motor starts increasing at an increase rate equal to or higher than a first threshold value, as a piston touch point, and/or a function of detecting the phase in a rotational direction of the drive cam, after exceeding the piston touch point, when the increase rate becomes equal to or less than a second threshold value, as a clutch touch point, and a function of, when switching between a high reduction ratio mode and a low reduction ratio mode, adjusting a rotation amount of the drive cam on the basis of the piston touch point and/or the clutch touch point.
A linear guide (10) comprises: a guide rail (1) having a raceway groove (3) on a side surface; a slider (2) assembled to the guide rail (1) and having a raceway groove (7) facing the raceway groove (3); and a plurality of rolling elements disposed rollably in a rolling element rolling path (23), which is composed of a load rolling path (22) formed by the raceway grooves (3, 7), and a no-load rolling path (21) provided on the slider (2) and communicating between one end and the other end of the load rolling path (22). One of the guide rail (1) and the slider (2) moves relative to the other as the rolling elements roll. The plurality of rolling elements are constituted by a plurality of steel balls (6), and a plurality of spacer balls (16) smaller than the steel balls (6) and having elasticity. At least one spacer ball (16) is always present in the no-load rolling path (21). The length of a gap in which neither the steel balls (6) nor the spacer balls (16) are present in the rolling element rolling path (23) is 50% or less of the diameter of the steel balls (6), regardless of the position of the rolling elements. Consequently, it is possible to provide a rolling guide device that is easy to assemble and has good operability and excellent repeated positioning accuracy.
F16C 29/06 - Ball or roller bearings in which the rolling bodies circulate partly without carrying load
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
58.
Display screen or portion thereof with graphical user interface
A method for understanding damage of a bearing includes: a measurement step of measuring at least one first measurement position P1 on a raceway surface (10) of a bearing (1) and at least one second measurement position P2 on a reference surface (11), the reference surface (11) being a surface different from the raceway surface (10) of the bearing (1), using an ECT device; and a determination step of, by comparing a measurement result in the measurement step and a reference value corresponding to measurement values measured by the ECT device on the raceway surface (10) and the reference surface (11) of the bearing (1), the raceway surface (10) and the reference surface (11) being equivalent to a brand-new raceway surface (10) and reference surface (11), respectively, determining a damage degree of the bearing.
Provided is a grease composition that can be used in various environments and can achieve abrasion resistance and low dust-generation properties. The grease composition contains a thickener, a base oil, and a rust inhibitor. The thickener contains an alicyclic-aliphatic diurea. The base oil comprises an ether oil, or comprises an ether oil and a high-viscosity synthetic hydrocarbon oil having a kinematic viscosity at 40°C of 300-500 mm2/s, and the ether oil content is 80 mass% or more based on the total mass of the base oil. The kinematic viscosity of the base oil at 40°C is 90-150 mm2/s, and the kinematic viscosity at -30°C is 60,000 mm2/s or less. The rust inhibitor is a succinic acid-based rust inhibitor. In addition, the 60-stroke worked penetration of the grease composition measured in accordance with JIS K 2220 7 is 180-230.
C10M 169/00 - Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
Provided is a retainer for a rolling bearing, which retains a plurality of rolling elements, the retainer comprising a first split body and a second split body that are made of resin and have an annular shape. A first connection part of the first split body is provided with a protuberance that protrudes in a direction toward the second split body, and a hook part that is provided to the protuberance. A second connection part of the second split body is provided with: an accommodating hole that receives the protuberance; a step part that comes into contact with the hook part within the accommodating hole and locks the hook part; and a guide wall part that is disposed along a second inner peripheral surface of the second split body, protrudes in a direction toward the first connection part, and guides the protuberance to the accommodating hole.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A probe is provided with a probe body that comes into contact with a measurement target surface of a bearing and detects an impedance of the bearing, and a housing that includes a hole in which the probe body is accommodated and has a substantially cylindrical shape. A switch is attachable to and detachable from the housing.
G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
A rolling bearing device (1) having a lubricating function includes a pair of angular ball bearings (10A, 10B), an outer ring spacer (20), and a pair of inner ring spacers (30A, 30B). The outer ring spacer (20) includes a nozzle part (22) which protrudes toward an inner-diameter side and through the interior of which a lubricant can flow. Each inner ring spacer (30A, 30B) includes: a small-diameter part (31) that faces an inner peripheral surface of a tip portion of the nozzle part (22); and a large-diameter part (32) that faces an axial lateral surface of the tip portion of the nozzle part (22). The inner ring spacers are formed in a stepped shape. The large-diameter part (32) includes: an annular scoop (34); and a discharge nozzle (35) that communicates the scoop (34) and a bearing space of each angular ball bearing (10A, 10B). The outer ring spacer (20) includes: a radial flow path (23) that extends in a radial direction inside the nozzle part (22); and a pair of supply nozzles (24, 24) that are open from the radial flow path (23) to both axial lateral surfaces of the tip portion of the nozzle part (22). Due to this configuration, the amount of heat generated by the bearings and the torque thereof can be reduced by decreasing the amount of oil supplied, and costs can be reduced.
F16C 33/66 - Special parts or details in view of lubrication
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
An angular ball bearing includes an outer ring having an outer ring raceway surface, an inner ring having an inner ring raceway surface, and a plurality of balls being rollable between the outer ring raceway surface and the inner ring raceway surface at a contact angle, a bearing ring of at least one of the outer ring and the inner ring being a press-formed product of a steel plate. The bearing ring includes an extending portion extending in an axial direction from the raceway surface toward a side opposite to a side on which a line of action of the contact angle relative to a center of the ball passes through the raceway surface. The extending portion has a bent portion bent in a radial direction and the bent portion overlaps the ball when viewed from the axial direction so as to define an overlap allowance.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
65.
CROWN-TYPE RETAINER FOR BALL BEARING, AND BALL BEARING
A crown cage for a ball bearing includes an annular main portion, pillar portions protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion, and a pocket formed between the adjacent pillar portions and having a spherical concave surface capable of holding a ball. The pillar portion includes a pair of claw portions having tip end portions arranged at intervals therebetween and a connection portion connecting the pair of claw portions. An inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions constituting the pocket. A distance from an outer circumferential surface of the pocket to a center of the crown cage for a ball bearing is larger than a distance from an outer circumferential surface of the pillar portion to the center.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A flange integrated with an inner ring is formed at one end of the inner ring in an axial direction, and a flange member separate from the inner ring is fastened to a fastening member extending in the axial direction at the other end of the inner ring in the axial direction, and the flange member includes a base abutting against the inner ring in the axial direction and on which a head of the fastening member is seated, and a caulking portion pressing the head of the fastening member from the other end side in the axial direction.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
67.
METHOD FOR MANUFACTURING RING-SHAPED MEMBER, METHOD FOR MANUFACTURING BEARING, METHOD FOR MANUFACTURING MACHINE PART, METHOD FOR MANUFACTURING VEHICLE, METHOD FOR MANUFACTURING MECHANICAL DEVICE, RING-SHAPED MEMBER, BEARING ELEMENT, BEARING, MECHANICAL DEVICE, AND VEHICLE
A method for manufacturing a ring-shaped member includes preparing a workpiece, pressing a first member against the workpiece to form a depression having a depth in an axial direction in the workpiece, punching out a bottom portion of the depression in the workpiece using a second member, and deforming a circumferential wall in accordance with relative movement between the workpiece and a third member.
B21D 53/10 - Making other particular articles parts of bearingsMaking other particular articles sleevesMaking other particular articles valve seats or the like
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
Provided are a ball screw designing method and a ball screw capable of ensuring smooth movement of balls and of accommodating an increase in speed. This ball screw designing method involves, in a case where a straight line exists between two curves having equal radii as the center line of a circulation path, setting the value of L so as to satisfy formulae (1) and (2) where Da represents the ball diameter, L represents the length of the straight line between the two curves, θb represents the ball pitch angle on the curves, θr represents the center angle of the curves, and the angle ratio of the curves is defined as θr/θb, when (A) θr/θb ≈ n+0.25 (n is an arbitrarily-defined integer) is satisfied or (B) θr/θb ≈ n+0.25 is not satisfied. (1): L/Da+θr/θb ≈ n+ 0.5 (n is an integer) (2): L ≈ (n+0.5-(θr/θb))×Da
According to the present invention, a probe comprises: a substantially columnar probe body that is in contact with a measurement target surface of a bearing and detects the impedance of the bearing; a housing which has therein a sliding hole extending in the axial direction, and in which the probe body disposed in the sliding hole is accommodated so as to be able to slide in the axial direction; an abutting part that is provided at a tip part of the housing and can abut against the measurement target surface of the bearing; and a biasing spring that is disposed in the sliding hole of the housing and biases the probe body in the axial direction with respect to the housing. The abutting part has four protrusions that protrude in the axial direction, and when viewed in the axial direction, the four protrusions are respectively positioned at the vertices of a rectangle centered on the central axis of the probe body.
G01N 27/9093 - Arrangements for supporting the sensorCombinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting
70.
INDUCTION HEATING METHOD AND INDUCTION HEATING APPARATUS FOR RING-SHAPED MEMBER, MANUFACTURING METHOD FOR RING-SHAPED MEMBER, MANUFACTURING METHOD FOR BEARING, MANUFACTURING METHOD FOR VEHICLE, AND MANUFACTURING METHOD FOR MECHANICAL DEVICE
An induction heating method includes a step of supplying a ring-shaped member to a predetermined section serving as a heating target section using an induction coil, and a step of moving the ring-shaped member along a reference axis so as to pass through the predetermined section. The moving step includes controlling contact between the ring-shaped member and a different member by a contact control portion.
The objective of the present invention is to provide a signal processing device, a diagnostic system, and a signal processing method capable of improving the accuracy of a determination value used for determining a lubrication state in a rolling device. Provided is a signal processing device (3) for calculating a determination value to be used for determining a lubrication state in a rolling device on the basis of a measurement signal acquired by a sensor (2), the signal processing device (3) comprising: a first processing unit (321) that performs band-limiting and envelope-processing to the measurement signal and converts the measurement signal into a time-domain signal; a second processing unit (322) that converts the time-domain signal into a first frequency-domain signal; a third processing unit (323) that converts a logarithmic spectrum of the first frequency-domain signal into a first quefrency domain signal; a fourth processing unit (324) that generates a second quefrency domain signal in which a higher-order cepstrum domain of the first quefrency domain signal including the rotational frequency of the rolling device is set to a prescribed value; a fifth processing unit (325) that converts the second quefrency domain signal into a second frequency domain signal; and a determination value calculation processing unit (33) that calculates the determination value on the basis of the second frequency domain signal.
A crown cage for a ball bearing includes an annular main portion, pillar portions protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion, and a pocket formed between the adjacent pillar portions and having a spherical concave surface having a spherical shape capable of holding a ball. The pillar portion includes a pair of claw portions having tip end portions arranged at intervals therebetween and a connection portion connecting the claw portions. An inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions configuring the pocket. A distance from an inner circumferential surface of the pocket to a center of the crown cage for a ball bearing is smaller than a radius of an inner circumferential surface of the pillar portion.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
73.
Motor control device, electric actuator product, and electric power steering device
A motor control device including: a current command value calculation unit configured to calculate a current command value for driving a motor; a current value detection unit configured to detect current flowing through the motor; a current control unit configured to output a first voltage command value according to deviation between a current detected value, the current detected value being a detected value of current detected by the current value detection unit, and the current command value; a voltage disturbance control unit configured to calculate a second voltage command value by adding output from a delay element to the first voltage command value and also input the second voltage command value to the delay element; and a driving circuit configured to drive the motor, based on the second voltage command value.
[Problem] To provide a structure that can switch between enabling and disabling a reverse input shutoff function for preventing torque that is reversely inputted to an output member from being transmitted to an input member. [Solution] A pressed member 2 has a fixed element 7 supported by and fixed to a portion that does not rotate even during use, a movable element 8 supported on the radially inner side of the fixed element 7 so as to be capable of relatively rotating with respect to the fixed element 7, and a coupling member 9 extending between the fixed element 7 and the movable element 8 so as to be capable of engaging with and disengaging from at least one element of the fixed element 7 and the movable element 8.
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
75.
SERVO PRESS MECHANISM, PRESSING METHOD, PRODUCTION METHOD FOR BEARING, PRODUCTION METHOD FOR MECHANICAL DEVICE, AND PRODUCTION METHOD FOR VEHICLE
A servo press mechanism (1) comprises a slide (2), a main press part (3) that has a master shaft (5), and a sub-press part (4) that has slave shafts (6a, 6b). The slide (2) can move in a first direction that is a pressing direction and a second direction that is different from the first direction on the basis of drive by the main press part (3). In a first mode, the slide (2) is driven with assistance from the sub-press part (4). In a second mode, the slide (2) is driven without substantial assistance from the sub-press part (4).
B30B 1/18 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
B30B 15/00 - Details of, or accessories for, pressesAuxiliary measures in connection with pressing
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
In the present invention, a housing (30) includes a first axial surface (AX1) oriented in a first direction. A load from a ball screw (20) along a second direction is received by the first axial surface (AX1) via an inner ring (41), a rolling body (43), and an outer ring (42). A bearing (40) includes a restricting member (50) disposed in contact with the outer ring (42). The restricting member (50) includes a third axial surface disposed facing a second axial surface (AX2). When a screw shaft (21) or a nut (22) is rotated with respect to the housing (30), relative movement in a circumferential direction is performed between the second axial surface (AX2) and the third axial surface (AX3). Relative axial movement of the inner ring (41) relative to the outer ring (42) in the first direction is restricted on the basis of an axial positional relationship between the second axial surface (AX2) and the third axial surface (AX3).
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
The present invention comprises a ball screw provided with a threaded shaft and a nut, a pair of intermediate supports positioned so as to be vertically movable around the threaded shaft, a pair of frame bodies respectively attached to the pair of intermediate supports and connected by a connection member, a linear-motion guiding part having a pair of outer cylinders which pass through the shaft and to which the pair of frame bodies are respectively attached, and a pair of buffer devices. The nut has a state in which the nut comes into contact with the intermediate support or the frame body positioned above and moves in the vertical direction together with the pair of intermediate supports and the pair of frame bodies, and a state in which the nut is not in contact with the intermediate support or the frame body positioned above.
A housing (30) has a first axial surface (AX1) oriented in a first direction and a second axial surface (AX2) oriented in a second direction. A load from a ball screw (20) along the second direction is received by the first axial surface (AX1) via an inner race (41), a rolling body (43), and an outer race (42). A bearing (40) or the ball screw (20) has a third axial surface (AX3) disposed facing the second axial surface (AX2). When a screw shaft (21) or a nut (22) is rotated with respect to the housing (30), relative movement in the circumferential direction occurs between the second axial surface (AX2) and the third axial surface (AX3). Axial relative movement of the inner race (41) with respect to the outer race (42) in the first direction is restricted on the basis of an axial positional relationship between the second axial surface (AX2) and the third axial surface (AX3).
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A detection method for detecting a state of a bearing device including a tapered roller bearing includes applying an AC voltage to an electric circuit including an outer member, an inner member, and a plurality of rollers in a state in which a predetermined load is applied to the bearing device; measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and based on the impedance and the phase angle, deriving an oil film thickness and a metal contact ratio between the inner member and the plurality of rollers or between the inner member and at least one of the plurality of rollers by using a calculation formula corresponding to the electric circuit.
A component (17) of a roller bearing includes: a central section (27) that has a peripheral surface having a linear profile extending at least in the axial direction; and end sections (25) that each have a peripheral surface having a crown profile. A superfinishing method involves: using first grinding wheels (31) to subject the end sections (25) to superfinishing while rotating the component (17); and using a second grinding wheel (33), which was prepared separately from the first grinding wheels (31), to subject the central section (27) to superfinishing while rotating the component (17).
In this linear motion guide, a raceway surface has: an end-side raceway surface intersecting a longitudinal-direction end surface of a slider body; and an inner raceway surface disposed on the opposite side of the end-side raceway surface to the longitudinal-direction end surface. The end-side raceway surface has a rotationally symmetrical shape with respect to an end-side raceway surface central axis that coincides or is parallel with a linear-portion center line of a rolling passage, and has: a partially conical raceway surface connected to the inner raceway surface; and a curved raceway surface connecting the partially conical raceway surface and the longitudinal-direction end surface. In a cross section including the end-side raceway surface central axis, the surface of the partially conical raceway surface has a linear shape and the surface of the curved raceway surface has an arc shape. In the cross-section, the tangent of the partially conical raceway surface and the tangent of the curved raceway surface are the same at the boundary between the partially conical raceway surface and the curved raceway surface.
A friction clutch device 7 comprises: a retaining ring 32 externally fitted to a second member 102; a pressing plate 36 that faces a lateral surface on one axial side of a friction plate which is either a first friction plate 45 or a second friction plate 46 located furthest on said one axial side, and is externally fitted to the second member 102 in a manner capable of moving axially toward or away from the friction plate located furthest on said one axial side; an elastic member 37 that is sandwiched between the retaining ring 32 and the pressing plate 36 and that elastically biases the pressing plate 36 toward the other axial side; and a spacer 33 and a fastening ring 34 that are locked to a locking groove 15 of the second member 102 and that prevent the retaining ring 32 from being displaced toward said one axial side.
The present invention implements a method with which it is possible to prevent generation of an internal defect in a build-up layer having a raceway surface on a surface. The method comprises a build-up step of radiating a laser 10 emitted from a laser light source to a raceway surface 4a (or a portion where a raceway surface of a base material is formed) provided on an inner circumferential surface or an outer circumferential surface of a bearing ring 3a, and relatively rotating the laser light source with respect to the raceway ring 3a and relatively displacing the laser light source in a width direction of the raceway surface 4a (or a portion where the raceway surface is formed) while supplying welding material 11 to a portion of the raceway surface 4a irradiated with the laser 10, thereby forming a build-up portion 15 composed of a plurality of annular beads or beads wound without a gap on the raceway surface 4a. In the build-up step, the radiation direction of the laser 10 with respect to the raceway surface 4a is a direction inclined, with respect to a normal direction of the raceway surface 4, forward in relation to a relative displacement direction in an axial direction of the laser light source with respect to the raceway ring 3a.
F16C 19/22 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
Provided is a seal structure capable of reducing seal torque. A seal structure 3 comprises: at least one seal lip 23; at least one lip sliding-contact surface 24; and grease 25. The at least one seal lip 23 and the at least one lip sliding-contact surface 24 slide by means of an oil film of the grease 25. The at least one lip sliding-contact surface 24 has a plurality of recesses 35. With respect to the plurality of recesses 35, the average value of the difference in height between the bottom sections and the opening edge sections is 1-10 μm inclusive, and the percentage of the total opening area of the plurality of recesses 35 to a certain area of the at least one lip sliding-contact surface 24 is 30% or more but less than 100%.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
F16C 33/66 - Special parts or details in view of lubrication
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
Disclosed is a quenching method for a quenching object including a race provided with an object through hole. The quenching method includes a step of preparing a quenching tool which is a rod body, a step of suspending a plurality of the quenching objects on the rod body by inserting the quenching tool into the object through hole, and a step of immersing the quenching tool and the quenching objects in a cooling oil. In the step of suspending, each of the quenching objects is disposed on the rod body such that a contact state between the quenching tool and the object through hole is line contact.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
C21D 1/18 - HardeningQuenching with or without subsequent tempering
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Machine elements (not for land vehicles); bearings, for use as machine elements other than for land vehicles; ball screws (machine elements not for land vehicles); linear motion bearings (machine elements not for land vehicles). Machine elements for land vehicles; wheel bearings for land vehicles; wheel bearings integral with wheel hub for land vehicles; bearings for clutch for land vehicles; ball screws for land vehicles.
A resin cage includes at least one circular ring portion and a plurality of column portions extending in an axial direction from the circular ring portion. Balls are rotatably held by cylindrical or partially cylindrical pockets formed between adjacent column portions. The circular ring portion has a guide surface guided by an inner circumferential surface of an outer ring or an outer circumferential surface of an inner ring. A roundness of the guide surface is 5 μm or less, differences between angles formed by centers of adjacent pockets P and 360°/number of pockets are all within ±0.1°, and orientations of centers C of all the pockets P are oriented to one side in a circumferential direction and one side in the axial direction from an outer diameter side toward an inner diameter side.
A connection device electrically connects a hollow rotary shaft and a conductive member. The connection device includes a first conductive portion attached to an end of the rotary shaft, and a second conductive portion inserted into a recess of the first conductive portion to electrically connect the first conductive portion and the conductive member. The first conductive portion includes a first abutting portion that abuts on the second conductive portion. The second conductive portion includes a second abutting portion that abuts on the first abutting portion. At least one of the first abutting portion and the second abutting portion has a protrusion shape. The first abutting portion and the second abutting portion abut on each other on a rotation axis of the rotary shaft.
This brush unit is brought into contact with a shaft conductive part provided on a rotating shaft to electrically connect a housing and the shaft conductive part. The brush unit is provided with: a holder; a brush that is brought into contact with the shaft conductive part via a first opening provided in the holder; a spring; a cylindrical sleeve that holds the brush; an electrode; and wiring that connects the brush and the electrode. The electrode is sandwiched between a second protruding part of the holder and the sleeve.
F16C 19/02 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
H01R 39/00 - Rotary current collectors, distributors or interrupters
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
90.
BEARING DAMAGE DETECTION SYSTEM AND BEARING DAMAGE DETECTION METHOD
This bearing damage detection system comprises: a rotation sensor that detects rotation of a rolling bearing and outputs a rotation signal; a rotation fluctuation extraction unit that extracts rotation fluctuations of the rolling bearing from the rotation signal and generates a rotation fluctuation signal; a frequency analysis unit that performs frequency analysis on the waveform of the rotation fluctuation signal to find a frequency characteristic; a peak intensity calculation unit that finds a peak intensity corresponding to bearing damage from the frequency characteristic; and a damage detection unit that detects bearing damage of the rolling bearing on the basis of the peak intensity. The rotation fluctuation extraction unit finds the waveform of the rotation fluctuation signal from which various types of noise have been removed.
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
A reverse-input blocking clutch includes a housing, an input shaft, an output shaft, a pair of engaging elements, a first bearing mechanism provided between the input shaft and the housing, and a second bearing mechanism provided between the output shaft and the housing. At least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of the first bearing mechanism and the second bearing mechanism.
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
92.
INDUCTION HEATING METHOD AND MANUFACTURING METHOD FOR RING-SHAPED MEMBER, RING-SHAPED MEMBER, BEARING, INDUCTION HEATING APPARATUS, MANUFACTURING METHOD FOR BEARING, MANUFACTURING METHOD FOR VEHICLE, AND MANUFACTURING METHOD FOR MECHANICAL DEVICE
A ring-shaped member is induction-heated by supplying a current to an induction coil. An induction heating step includes induction-heating the ring-shaped member using an induction coil disposed at a radially inward position of the ring-shaped member in a state in which no substantial coil is disposed at a radially outward position of the ring-shaped member, or induction-heating the ring-shaped member using an induction coil disposed at the radially outward position of the ring-shaped member in a state in which no substantial coil is disposed at the radially inward position of the ring-shaped member. Effective lengths of the induction coils are set to be larger than an axial length of the ring-shaped member.
The present invention provides a linear motion guide device in which, provided that a vertical center plane CP is defined to be a plane passing through the widthwise center of a slider body and a longitudinal axis line of a guide rail, a horizontal reference plane HP is defined to be a plane orthogonal to the vertical center plane CP and passing through a straight-portion centerline of a rolling path, and a vertical reference plane VP is defined to be a plane parallel to the vertical center plane CP and intersecting a chamfered portion, the surface of the chamfered portion lies on a locus of revolution centered on a point O2 shifted along the horizontal reference plane HP so as to be farther away from a first orbital plane than the groove-bottom center O1 of the first orbital plane in a cross section perpendicular to the straight-portion centerline, and the locus of revolution has a minimum radius that is greater than a groove-bottom radius r of the first orbital plane.
In this linear motion guide device, when a plane passing through the width-direction center of a slider body and the longitudinal axis of a guide rail is defined as a vertical center plane CP, a plane orthogonal to the vertical center plane CP and passing through the linear part center line of a rolling path is defined as a horizontal reference plane HP, and a plane parallel to the vertical center plane CP and crossing a second inclined surface and a third inclined surface is defined as a vertical reference plane VP, a point P2 on a first inclined surface farthest from the vertical reference plane VP is separated from the vertical reference plane VP farther than a point P1 on a first raceway surface farthest from the vertical reference plane VP, and a point P4 on the second inclined surface and the third inclined surface farthest from the horizontal reference plane HP is separated from the horizontal reference plane HP farther than a point P3 on the first raceway surface farthest from the horizontal reference plane HP.
Provided is a diagnosis device for diagnosing a rolling device in which a lubricant is used, the diagnosis device including: an acquisition means for acquiring, by using an electric impedance method, the impedance and the phase of the rolling device in a stopped state after the rolling device starts rotating and prescribed rotation is performed; a derivation means for deriving, from the impedance and the phase, the thickness of a film originating from the lubricant in the rolling device; and a determination means for determining the lubrication state of the rolling device on the basis of the thickness of the film.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16H 25/24 - Elements essential to such mechanisms, e.g. screws, nuts
F16N 29/00 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems
F16N 29/02 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
96.
BEARING DEVICE STATE DETECTING METHOD, DETECTING DEVICE, AND PROGRAM
A detection method for detecting a state of a bearing device including a slide bearing includes: applying an AC voltage to an electric circuit including the slide bearing and a rotation shaft; measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and deriving an oil film thickness and a metal contact ratio between the slide bearing and the rotation shaft based on the impedance and the phase angle, in which the oil film thickness and the metal contact ratio are derived by using a calculation formula corresponding to an electric circuit constructed by a line contact generated between the slide bearing and the rotation shaft.
This state diagnosis system includes: an acquisition means for acquiring an image including a diagnosis target; a specification means for specifying a damaged portion and type of damage of the diagnosis target in the image acquired by the acquisition means by using a trained model that receives input of an image to output a damaged portion and type of damage of a diagnosis target included in the image; and an output means for outputting the image acquired by the acquisition means and the damaged portion and type of damage specified by the specification means in association with each other.
A quenching tool is used for quenching a quenching object which includes a disc-shaped race having a race through hole. The quenching tool includes a support mesh having a first support portion configured to be in contact with the quenching object, and support wires which are a plurality of second support members each having a second support portion configured to be in contact with the quenching object. A position of the second support portion is offset in a normal direction with respect to the first support portion. Further, the position of the second support portion is also offset in a direction of an axis contained in an in-plane direction orthogonal to the normal with respect to the first support portion.
A quenching-attitude-setting program causes a computer to execute setting of the quenching attitude of an object to be quenched. The quenching-attitude-setting program causes the computer to execute a first process of dividing a virtual model obtained by modeling the object to be quenched into a plurality of elements based on a world coordinate system including a vertical direction as an axis, and a second process of evaluating whether a vapor film generated when the virtual model is immersed in cooling oil remains for each of the plurality of elements. In the quenching-attitude-setting program, the first process and the second process are repeated while changing an attitude of the virtual model with respect to the world coordinate system until the number of elements evaluated as having the vapor film remaining satisfies a preset condition.
A ball screw (10) comprises: a screw shaft formed with a screw shaft-side raceway groove (21); a nut (30) provided with a through-hole (32) formed with a circular cross-sectional shape to provide communication between an outer peripheral surface (33) and a nut-side raceway groove (31); a plurality of balls (26) that roll on a ball rolling path (25); and a circulation component (40) that forms a ball circulation path (45). The circulation component (40) has a cylindrical nut insertion part (42) that is fitted into the through-hole (32), and, at a tip of the nut insertion part (42), has a semi-cylindrical part (46) provided such that a rolling surface of the ball circulation path (45) is continuous with a rolling surface of the nut-side raceway groove (31), and a tongue part (47) provided so as to enter the screw shaft-side raceway groove (21). A center line (C1) of the nut insertion part (42) is closer to an axis (O) of the nut (30) relative to a ball center trajectory (L) of the ball (26) scooped up in a tangential direction from the screw shaft-side raceway groove (21).
