Abstract

A method for automatically controlling a triggering of a sharpening of the sharp edge of a cutting blade for a cutting machine, includes determining components of a mechanical action torsor at the guiding point of the cutting blade in the blade reference, determining an admissible threshold value for a variable established from the at least one of the components of the mechanical action torsor and based on geometric parameters of the cutting blade and on thickness and material characteristics of the mattress to be cut, monitoring during the cutting of the material variations in amplitude of the variable chosen to determine the threshold value, and automatically triggering an alert to request a sharpening cycle of the sharp edge of the cutting blade as soon as the amplitude of the variable chosen to determine the threshold value reaches said threshold value.

IPC Classes  ?

• B24D 15/08 - Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knivesHand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of razors
• B24B 3/36 - Sharpening cutting edges, e.g. of toolsAccessories therefor, e.g. for holding the tools of cutting blades
• B24B 3/54 - Sharpening cutting edges, e.g. of toolsAccessories therefor, e.g. for holding the tools of cutting blades of hand or table knives

Abstract

In a method of manufacturing a measuring tube of a fluid measuring device, a tubular semi-finished product having a through-opening extending in a longitudinal direction (L) of the tubular semi-finished product is provided, a circumferential wall of the tubular semi-finished product having at least one waveguide area which, after completion of the measuring tube, forms a waveguide for surface acoustic waves of an acoustic measuring device, and the waveguide area extending along a longitudinal direction (L) of the tubular semi-finished product and from an outer surface to an inner surface of the tubular semi-finished product. The tubular semi-finished product is inserted into a forming tool, and at least one mandrel is inserted into the through-opening, an outer geometry of the mandrel corresponding to an inner geometry of a fluid channel of the measuring tube to be formed from the through-opening. In a forming step in which a pressing force (F) is applied to at least one axial center section of the semi-finished product, at least the center section is plastically deformed, the through-opening being formed into the fluid channel. Finally, the mandrel is removed.

IPC Classes  ?

• B29C 57/06 - Belling or enlarging, e.g. combined with forming a groove using mechanical means elastically deformable
• B29L 31/00 - Other particular articles

Abstract

A modular comb element for a machine for automatically cutting a mat of sheets of material. The cutting machine includes a plurality of cutting supports. The comb element includes a plate forming a support from which a first and a second row of teeth extend longitudinally. The teeth of the first row alternate with the teeth of the second row, and a free end of the teeth of the first row are farther from a downstream edge of the support than a free end of the teeth of the second row of teeth. A ramp is mounted on the downstream edge of the support and inclined with respect to the latter so as to limit the contact surface between the mat of sheets and the comb element. Air injection means are at a downstream edge of the ramp over an entire width thereof.

IPC Classes  ?

• B26D 7/20 - Cutting beds
• B26D 7/01 - Means for holding or positioning work
• B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
• B26D 7/32 - Means for performing other operations combined with cutting for conveying or stacking cut product

Abstract

The invention relates to a method for automatically controlling the triggering of the sharpening of the cutting edge of a cutting blade for a cutting machine, involving determining (S02) components of a torsor of the mechanical actions at the point of guidance of the cutting blade in the frame of reference of the blade; determining (S03) a permissible threshold value for a variable established from at least one of the components of the torsor of the mechanical actions and as a function of geometric parameters of the cutting blade and of thickness and material characteristics of the bat that is to be cut; monitoring, during the cutting of the material, variations in amplitude of the variable selected for determining the threshold value; and automatically triggering (S07) an alert to call for a cycle of sharpening the cutting edge of the cutting blade as soon the amplitude of the variable selected for determining the value of the threshold reaches said threshold value.

IPC Classes  ?

• G05B 19/4065 - Monitoring tool breakage, life or condition

Abstract

The invention relates to a method for determining components of a mechanical action torsor at the guiding point of a cutting blade (L) for a cutting machine, the blade being guided in a presser foot (P) of a cutting head of the machine, the method comprising the positioning of a five-component dynamometer on the presser foot, the dynamometer comprising a plurality of sensors for determining a frontal force, a lateral force, a rolling moment, a pitching moment and a yawing moment of the cutting blade, the establishment of a calibration matrix of the dynamometer, and the determination of the forces in three dimensions to which the cutting blade is subjected, on the basis of the measurements obtained by the sensors and the calibration matrix.

IPC Classes  ?

• B26F 1/38 - Cutting-outStamping-out
• B26D 5/00 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting

Abstract

A modular cutting-support element with suction in a machine for automatic cutting of sheet material by means of blades, includes a plurality of bristles arranged in the same single line, at least some of the bristles each having a base rigidly connected to a bearing plate intended to be mounted on a support, a head opposite the base on which a sheet material to be cut is intended to rest, and a stem connecting the head to the base, the largest cross-section of which is strictly included in the largest cross-section of the head, the bearing plate comprising, on each of its side surfaces, a plurality of transverse channels for the passage of suction air providing communication between an upper surface of the bearing plate from which the bristles extend and an inner surface opposite the upper surface.

IPC Classes  ?

• B26D 7/01 - Means for holding or positioning work
• B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
• B26D 7/20 - Cutting beds
• B65G 15/42 - Belts or like endless load-carriers made of rubber or plastics having ribs, ridges, or other surface projections
• B65G 15/58 - Belts or like endless load-carriers with means for holding or retaining the loads in fixed position, e.g. magnetic

Abstract

The invention relates to a modular comb element (10) for a machine (2) for automatic cutting of a mat of sheets of material, the cutting machine comprising a plurality of cutting support members (4) each having a plurality of bristles (6) on which the mat (M) rests, the comb element comprising a plate forming a support member (12) from which a first and a second row of teeth extend longitudinally, the teeth (14) in the first row alternating with the teeth (16) in the second row, and a free end of the teeth in the first row being further away from an upstream edge of the support member than a free end of the teeth in the second row of teeth, a ramp (18) mounted on the upstream edge of the support member and inclined relative to the latter so as to limit the contact surface between the mat of sheets and the comb element, and means for applying air to an upstream edge of the ramp across the entire width of the latter in order to facilitate unloading/loading of the mat of sheets.

IPC Classes  ?

• B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
• B26D 7/20 - Cutting beds
• B26D 7/32 - Means for performing other operations combined with cutting for conveying or stacking cut product

Abstract

The invention relates to a method for determining components of a mechanical action torsor at the guiding point of a cutting blade (L) for a cutting machine, the blade being guided in a presser foot (P) of a cutting head of the machine, the method comprising the positioning of a five-component dynamometer on the presser foot, the dynamometer comprising a plurality of sensors for determining a frontal force, a lateral force, a rolling moment, a pitching moment and a yawing moment of the cutting blade, the establishment of a calibration matrix of the dynamometer, and the determination of the forces in three dimensions to which the cutting blade is subjected, on the basis of the measurements obtained by the sensors and the calibration matrix.

IPC Classes  ?

• B26D 5/00 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
• B26F 1/38 - Cutting-outStamping-out

Abstract

Modular support element for aspirated cutting in a machine for automatic cutting of sheet material The invention relates to a modular support element (4) for aspirated cutting in a machine for automatic cutting of sheet material by means of blades, comprising a plurality of bristles (6) arranged in the same single line, at least some of the bristles each having a base (8) rigidly connected to a bearing plate (10) intended to be mounted on a stand, a head (12) opposite the base on which a sheet material to be cut is intended to rest, and a rod (9) connecting the head to the base, the largest cross-section of which is strictly included in the largest cross-section of the head, the bearing plate comprising, on each of its side surfaces, a plurality of transverse channels (18) for the passage of aspirated air providing communication between an upper surface of the bearing plate from which the bristles extend and an inner surface opposite the upper surface.

IPC Classes  ?

• B26D 7/01 - Means for holding or positioning work
• B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
• B26D 7/20 - Cutting beds

Abstract

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

IPC Classes  ?

• B23Q 15/013 - Control or regulation of feed movement
• B23Q 5/32 - Feeding working-spindles
• F16H 25/20 - Screw mechanisms
• H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
• 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
• B23B 39/00 - General-purpose boring or drilling machines or devicesSets of boring or drilling machines
• B23Q 5/10 - Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
• B23Q 5/28 - Electric drives
• B23Q 15/007 - Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
• B23Q 15/08 - Control or regulation of cutting velocity
• G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Abstract

A piezoelectric actuator control device comprising a first voltage converter supplying a DC voltage on a DC power supply bus to which is connected a second voltage converter capable of generating a variable excitation voltage under the control of a control computer, the second voltage converter comprising two switch half-bridges mounted in parallel with the terminals of a bus capacitor, the control computer being suitable for controlling the two switch half-bridges according to a first control configuration, in which they are controlled independently in order to each supply a voltage in a range between zero and a maximum positive value and according to a second control configuration, in which they are jointly controlled as a full-bridge for supplying a voltage between a minimum negative value and said maximum positive value.

IPC Classes  ?

• H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
• H02N 2/08 - Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuatorsLinear positioners using travelling waves, e.g. linear motors
• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02M 11/00 - Power conversion systems not covered by the other groups of this subclass
• H02N 2/06 - Drive circuitsControl arrangements

Abstract

Some embodiments are directed to an analysis device for board sports, intended to be secured to a board, such as a surfboard or ski, at the interface with the user. The device includes: a force sensor designed to capture one or more forces generated by the user on the board; a position and motion sensor designed to capture the position, speed and acceleration of the board in space; and a processing unit or processor connected to the force sensor and to the position and motion sensor and designed to synchronize and process the data from the sensors.

IPC Classes  ?

• A63F 9/24 - Games using electronic circuits not otherwise provided for
• A63B 69/00 - Training appliances or apparatus for special sports
• A63F 13/807 - Gliding or sliding on surfaces, e.g. using skis, skates or boards
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• B63B 32/00 - Water sports boardsAccessories therefor
• B63B 32/70 - Accessories not specially adapted for a particular type of board, e.g. paddings or buoyancy elements
• A63B 24/00 - Electric or electronic controls for exercising apparatus of groups
• A63B 71/06 - Indicating or scoring devices for games or players
• A63C 5/06 - Skis or snowboards with special devices thereon, e.g. steering devices
• A63C 11/00 - Accessories for skiing or snowboarding
• A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb

Abstract

The invention concerns a piezoelectric actuator control device comprising a first voltage converter (20) supplying a DC voltage on a DC power supply bus (40) to which is connected a second voltage converter (10) capable of generating a variable excitation voltage under the control of a control computer (50), said second voltage converter comprising two switch half-bridges (11, 12) mounted in parallel with the terminals of a bus capacitor (Cdc), the control computer being suitable for controlling the two switch half-bridges according to a first control configuration, in which they are controlled independently in order to each supply a voltage in a range between zero and a maximum positive value (Umax) and according to a second control configuration, in which they are jointly controlled as a full-bridge for supplying a voltage between a minimum negative value and said maximum positive value.

IPC Classes  ?

• H02N 2/06 - Drive circuitsControl arrangements
• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02M 11/00 - Power conversion systems not covered by the other groups of this subclass

Abstract

The invention concerns a piezoelectric actuator control device comprising a first voltage converter (20) supplying a DC voltage on a DC power supply bus (40) to which is connected a second voltage converter (10) capable of generating a variable excitation voltage under the control of a control computer (50), said second voltage converter comprising two switch half-bridges (11, 12) mounted in parallel with the terminals of a bus capacitor (Cdc), the control computer being suitable for controlling the two switch half-bridges according to a first control configuration, in which they are controlled independently in order to each supply a voltage in a range between zero and a maximum positive value (Umax) and according to a second control configuration, in which they are jointly controlled as a full-bridge for supplying a voltage between a minimum negative value and said maximum positive value.

IPC Classes  ?

• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02M 11/00 - Power conversion systems not covered by the other groups of this subclass
• H02N 2/06 - Drive circuitsControl arrangements

Abstract

A method of estimating the distribution of bone mineral density in at least one portion of a person's skeleton. The method includes generating a geometrical representation of the portion of the skeleton; a geometrical representation in three dimensions of at least one portion of the outline of the person; and first and second X-ray images; and using software to estimate: a value for the thickness of soft tissue through which the given X-ray has passed; an attenuation coefficient of the soft tissues that have been passed through; a value for the thickness of bone tissue through which the given X-ray has passed; and using the thickness value for the soft tissue through which the given X-ray has passed, and a value for the attenuation of the given X-ray due to the thickness of the bone tissue through which it has passed, the software estimates a value representative of the bone mineral density of the bone tissues through which the given X-ray has passed.

IPC Classes  ?

• A61B 6/02 - Arrangements for diagnosis sequentially in different planesStereoscopic radiation diagnosis
• A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment

Abstract

The invention mainly relates to a polar wheel (18) for an inductor of a rotating electrical machine, characterised in that it is made from a metal-containing material having a substantially fibre-free microstructure.

IPC Classes  ?

• H02K 1/22 - Rotating parts of the magnetic circuit
• H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Abstract

The invention relates to a heat exchanger comprising at least one duct (16) making it possible to channel a flow (18) of fluid and a plurality of elements (20) containing at least one phase change material arranged in said duct (16), characterised in that at least some of said elements (20) containing at least one phase change material can move freely in the flow (18) of fluid. Preferably, the heat exchanger comprises an adjustment system for adjusting the positioning of the elements (20) containing at least one phase change material in the duct (16).

IPC Classes  ?

• F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
• F28D 19/04 - Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat

Abstract

A machining device including a framework, a transmission shaft and a drive mechanism including a rotation member for driving the shaft in rotation about its axis, a drive member in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of the rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to the framework along the axis and is positioned between the rotation member and an end for coupling of the shaft to a cutting tool, while an electromechanical actuator is mounted in a fixed frame of reference associated with the framework in front of the drive member to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with the feed movement.

IPC Classes  ?

• B23Q 1/34 - Relative movement obtained by use of deformable elements, e.g. piezoelectric, magnetostrictive, elastic or thermally-dilatable elements
• B23B 47/34 - Arrangements for removing chips out of the holes madeChip-breaking arrangements attached to the tool
• B23Q 5/32 - Feeding working-spindles
• 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

Abstract

The invention relates to a real-time teaching aid device (1) for a board sport, such as surfing, intended for a person engaging in such a sport. Said teaching aid device comprises: • - a set of sensors (5) capable of measuring the position, the speeds, and the accelerations of a surf board (3) in a Cartesian coordinate system associated with the board; said set of sensors being connected to • - a measured data processing unit (7) for determining a deterministic dynamic behaviour model of the surf board; • - at least one signalling means (9) for providing, in real-time, information relating to the deterministic dynamic behaviour model of the board to the person engaging in such a sport and/or to a third party. The invention also relates to a surf board having such a device.

IPC Classes  ?

• A63B 69/00 - Training appliances or apparatus for special sports
• A63B 71/06 - Indicating or scoring devices for games or players
• B63B 35/79 - Surf-boards, e.g. sailboards

Abstract

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

IPC Classes  ?

• B23B 39/00 - General-purpose boring or drilling machines or devicesSets of boring or drilling machines
• B23Q 15/013 - Control or regulation of feed movement
• G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
• B23Q 5/32 - Feeding working-spindles
• F16H 25/20 - Screw mechanisms
• H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
• 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
• B23Q 5/10 - Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
• B23Q 5/28 - Electric drives
• B23Q 15/007 - Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
• B23Q 15/08 - Control or regulation of cutting velocity
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Abstract

The invention relates to an analysis device for board sports, intended to be secured to a board (1), such as a surfboard or ski, at the interface with the user. The device comprises: a force sensor (3) designed to capture one or more forces generated by the user on the board; a position and motion sensor (5) designed to capture the position, speed and acceleration of the board in space; and a processing unit (7) connected to the force sensor and to the position and motion sensor and designed to synchronise and process the data from the sensors.

IPC Classes  ?

• A63F 13/807 - Gliding or sliding on surfaces, e.g. using skis, skates or boards
• B63B 35/79 - Surf-boards, e.g. sailboards
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons

Abstract

The invention relates to a method for generating a three-dimensional virtual model of at least one portion of a person's skeleton, characterised in that an imaging device (1) is used to observe the person (Ind): a plurality of parameters are generated which are extrinsic to the person's skeleton and represent the geometry of an outer shell (E); and radiological images are generated which show said at least one portion of the person's skeleton; and by means of said extrinsic parameters, areas of interest to be observed are determined in the radiological images, these areas of interest are then searched for characteristic points of bones of the skeleton in order to deduce therefrom the relative positions of these bones in a spatial frame of reference and thus to generate said three-dimensional virtual model of said portion of the person's skeleton.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 7/60 - Analysis of geometric attributes
• G06T 17/00 - 3D modelling for computer graphics

Abstract

The invention relates to a method for estimating the distribution of bone mineral density in at least one portion of a person's skeleton. Said method includes generating: a geometric representation of the portion of the skeleton, a three-dimensional geometric representation of at least one portion of the outer envelope of the person, and first and second radiological images; and software is used to estimate: a value of the thickness of the soft tissue through which said given X-ray passed; an attenuation coefficient of the soft tissue through which said X-ray passed; a value of the thickness of the bone tissue through which said given X-ray passed; and using the value of the thickness of the bone tissue through which said given X-ray passed, and a value of the attenuation of said given X-ray by the thickness of the bone tissue through which it passed, the software estimates a value representing the bone mineral density of the bone tissue through which said given X-ray passed.

IPC Classes  ?

• A61B 6/02 - Arrangements for diagnosis sequentially in different planesStereoscopic radiation diagnosis
• A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment

Abstract

A machining device including a casing, a transmission shaft (3) and a drive mechanism (1) including a first gearing member (13) that is able to rotate the shaft about its axis (A), a second gearing member (17) that is in a helicoidal connection with the shaft in order to drive the shaft translationally along its axis in a feed movement, depending on the relative rotational speed of the first and second gearing members, and means for generating axial oscillations. The second gearing member (17) is able to move translationally along the axis (A) with respect to the casing, the means for generating axial oscillations including an electromechanical actuator (20) mounted at a fixed location, connected to the casing, and able to be coupled axially to the second gearing member (17) in order to make it oscillate translationally, so as to superimpose an axial oscillation component on said feed movement.

IPC Classes  ?

• H01L 41/08 - Piezo-electric or electrostrictive elements
• B23B 37/00 - Boring by making use of vibrations of ultrasonic frequency
• B23B 47/34 - Arrangements for removing chips out of the holes madeChip-breaking arrangements attached to the tool
• B23Q 5/32 - Feeding working-spindles
• 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

Abstract

The invention relates to a machining device comprising a framework, a transmission shaft (3) and a drive mechanism (1) comprising a rotation member (13) for driving said shaft in rotation about its axis (A), a drive member (18) in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of said rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to said framework along the axis (A) and is positioned between said rotation member and an end for coupling of said shaft to a cutting tool, while an electromechanical actuator (20) is mounted in a fixed frame of reference associated with said framework in front of said drive member (18) to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with said feed movement.

IPC Classes  ?

• B23Q 1/34 - Relative movement obtained by use of deformable elements, e.g. piezoelectric, magnetostrictive, elastic or thermally-dilatable elements
• B23B 47/34 - Arrangements for removing chips out of the holes madeChip-breaking arrangements attached to the tool
• B23Q 5/32 - Feeding working-spindles
• 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

Abstract

The invention relates to a machining device comprising a framework, a transmission shaft (3) and a drive mechanism (1) comprising a rotation member (13) for driving said shaft in rotation about its axis (A), a drive member (18) in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of said rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to said framework along the axis (A) and is positioned between said rotation member and an end for coupling of said shaft to a cutting tool, while an electromechanical actuator (20) is mounted in a fixed frame of reference associated with said framework in front of said drive member (18) to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with said feed movement.

IPC Classes  ?

• B23B 47/34 - Arrangements for removing chips out of the holes madeChip-breaking arrangements attached to the tool
• B23Q 1/34 - Relative movement obtained by use of deformable elements, e.g. piezoelectric, magnetostrictive, elastic or thermally-dilatable elements
• B23Q 5/32 - Feeding working-spindles
• 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

Abstract

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

IPC Classes  ?

• B23Q 5/32 - Feeding working-spindles
• F16H 25/20 - Screw mechanisms
• H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
• B23B 35/00 - Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machinesUse of auxiliary equipment in connection with such methods

Abstract

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

IPC Classes  ?

• B23B 35/00 - Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machinesUse of auxiliary equipment in connection with such methods
• B23Q 5/32 - Feeding working-spindles
• F16H 25/20 - Screw mechanisms
• H02P 5/46 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
• H02P 31/00 - Arrangements for regulating or controlling electric motors not provided for in groups , or

Abstract

A method of producing a finite-element model of a unique body of complex shape having an outer surface that is known in the form of a cloud of points describing said surface analytically or algebraically in a determined frame of reference, the method comprising the steps of a) using a parameterizable and generic finite-element model made up of simple geometrical volumes and representative of the family to which the unique body belongs, b) adapting said model as a function of parameters describing the unique body that is to be modeled; c) in said frame of reference, adjusting the parameterized generic finite-element model and causing the surface nodes of said parameterized model to correspond to points of the known outer surface of the body by projecting said nodes onto said surface along a direction that is normal to the surface of the generic model, and d) using the nodes of the surface as control points for a three-dimensional interpolation method in order to personalize the internal finite elements of the generic model.

IPC Classes  ?

• G06G 7/48 - Analogue computers for specific processes, systems, or devices, e.g. simulators