A throttle valve control device includes a valve arranged in a passage of a body and rotating together with a shaft to open and close the passage. A motor rotates the shaft such that the shaft is located at a valve fully-closed position, a valve fully-open position, or a valve intermediate position which is between the valve fully-closed position and the valve fully-open position. A coil spring applies a spring force to the shaft. A rotation angle sensor detects an opening degree of the valve. A controller executes a valve intermediate-position control within a range between a fully-open side threshold and a fully-closed side threshold between which the valve intermediate position is interposed. Outside the range, the controller executes a fully-open side control and a fully-closed side control which are different from the valve intermediate-position control.
A throttle valve device includes a shaft in a cylindrical passage, a slit passing through the shaft from one lateral side to another lateral side of the shaft, a pair of bearings on both sides of the cylindrical passage and rotatably supporting one end part and another end part of the shaft, and a circular-plate valve inserted into the slit of the shaft and rotatable to open and close the cylindrical passage. A length of the slit on the one lateral side of the shaft is, in an axial direction of the shaft, longer than a length of the slit on the other lateral side of the shaft. A round end hole is formed at an end of the slit in the one end part of the shaft on the one lateral side of the shaft.
F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
B23D 17/00 - Shearing machines or shearing devices cutting by blades pivoted on a single axis
3.
Throttle valve device and method for manufacturing throttle valve device
A throttle valve device includes a shaft in a cylindrical passage, a slit passing through the shaft from one lateral side to another lateral side of the shaft, a pair of bearings on both sides of the cylindrical passage and rotatably supporting one end part and another end part of the shaft, and a circular-plate valve inserted into the slit of the shaft and rotatable to open and close the cylindrical passage. A length of the slit on the one lateral side of the shaft is, in an axial direction of the shaft, longer than a length of the slit on the other lateral side of the shaft. A round end hole is formed at an end of the slit in the one end part of the shaft on the one lateral side of the shaft.
F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
A throttle valve device includes a coil spring arranged in a body between a valve gear and a valve and having a spring end extending radially outward. A first guide covers an end of the coil spring and includes a first guide hook that contacts the spring end. A body hook in the body is capable of contacting a tip end part of the first guide hook. A valve gear hook in the valve gear is capable of contacting a base end part of the first guide hook. The first guide hook has a protrusion protruding toward the spring end between the tip end part and the base end part. The first guide hook is deformable by receiving the spring force at the protrusion as an effort while a fulcrum is at a contact between the first guide hook and the body hook or the valve gear hook.
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
F02D 9/02 - Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
5.
Throttle device and method for manufacturing throttle device
A valve gear includes a gear portion configured to rotate by drive torque transmitted from an actuator, a boss portion provided on the gear portion and having a cylindrical outer wall, and one or more extension portions extending in an axial direction from the gear portion on a radial outer side of the boss portion. A coiled spring including a first hook provided at end portion on a gear portion side, and a second hook provided at end portion on an opposite side to the gear portion so that the first hook and the second hook are respectively locked to each other on opposite sides in a circumferential direction of the extension portion. A valve gear subassembly formed by assembling the valve gear and the spring is housed in a valve gear accommodating chamber of the body, and the second hook of the spring is locked to the body.
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
F02D 9/02 - Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
F02D 9/08 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits
6.
Throttle valve device and method for magnetizing the same
A throttle valve device includes a body, a valve, a motor, and a cover. The body defines a passage, a motor space, and a connecting portion that connects the motor space to the passage. The motor includes a motor yoke made of a magnetic material, a plurality of magnets that are arranged on an inner circumferential surface of the motor yoke. The plurality of magnets are magnetized in a state where the motor yoke is disposed in the motor space of the body. The plurality of magnets are arranged in a circumferential direction in the motor yoke with a space. The connecting portion is aligned with the space between the plurality of magnets in a radial direction of the motor yoke.
F16K 3/04 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
A throttle valve device includes a body, a valve, a motor, a speed reducer, and a cover. The body that defines a passage and a motor space therein. The motor includes a motor yoke, a magnet, a motor shaft, a pair of motor bearings, an armature core, a commutator, a brush, and a brush holder. The motor yoke is made of a magnetic material. The brush holder holds the brush. The motor yoke has an open end that is covered by the brush holder.
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
A throttle valve device includes a body, a valve, a valve gear, a motor, an intermediate gear, an intermediate shaft and a cover. A guiding hole is formed in the cover and the intermediate shaft engages the guiding hole. A positioning reference pin is formed in one of the cover and the body at a position around the motor. A positioning reference hole is formed in the other of the cover and the body at a position around the motor. The body and the cover are positioned with respect to each other by both engaging between the intermediate shaft and the guiding hole and engaging between the positioning reference pin and the positioning reference hole. The body and the cover are fixed to each other by a fixing member.
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
A throttle valve device includes a body, a shaft, a pair of bearings, a valve, a motor, a valve gear, a coil spring, a first guide, and a second guide. At least one of the first guide and the second guide includes a circular holder that faces an end surface of the coil spring, a spring-end holding portion that outwardly protrudes from the circular holder and is configured to hold a spring end of the coil spring, a hub that is rotatably connected to the shaft, and a connecting portion that connects the hub and the circular holder. The first guide is in contact with a lever only at an end surface of the hub. The second guide is in contact with one of the pair of bearings, which is located close to the valve gear, at an end surface of the hub.
F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM (Japan)
DENSO DAISHIN CORPORATION (Japan)
DENSO CORPORATION (Japan)
Inventor
Hayasaka, Takehiro
Shamoto, Eiji
Nam, Soohyun
Abstract
A rotation controller controls a rotation mechanism for rotation of a spindle. A movement controller causes, while the spindle is rotating, a feed mechanism to bring a cutting tool into contact with a workpiece to cause the cutting tool to cut the workpiece. The rotation controller controls a spindle rotation speed so as to accelerate or decelerate the rotation of the spindle, and the movement controller brings the cutting tool into contact with the workpiece after the rotation controller starts the rotation of the spindle, and separates the cutting tool from the workpiece while the spindle rotation speed is put under the acceleration control or deceleration control exercised by the rotation controller.
B23Q 15/12 - Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
G05B 19/416 - 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 characterised by control of velocity, acceleration or deceleration
11.
THROTTLE DEVICE AND METHOD FOR MANUFACTURING THROTTLE DEVICE
In a valve gear (40), a gear part (41) that is rotated by drive torque transmitted from an actuator, a boss part (42) provided to the gear part (41) and having a cylindrical outer wall (425), and an extension part (45) extending from the gear part (41) in the axial direction on the radially outer side of the boss part (42), are formed in an integral manner. A coil-shaped spring (50) is fitted to the outer wall (425) of the boss part (42) of the valve gear (40). In the spring (50), a first hook (51) provided to an end portion on the gear part side and a second hook (52) provided to an end portion on the side opposite to the gear part are fastened to the sides opposite to each other in the circumferential direction of the extension part (45) . A valve gear subassembly (701) obtained by assembling the valve gear (40) and the spring (50) is stored in a valve gear storage chamber of a body (10), and the second hook (52) of the spring (50) is fastened to the body (10).
F02D 9/02 - Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
F02D 9/10 - Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY (Japan)
DENSO DAISHIN CORPORATION (Japan)
DENSO CORPORATION (Japan)
Inventor
Shamoto Eiji
Hayasaka Takehiro
Akari Hikaru
Abstract
A drill 10 comprising: a cutting blade 22 formed at the tip of a drill main body; and a chip discard groove 23 having a rake face 24 on the tip side of the drill main body and extending from the rake face 24 towards the rear end side of the drill main body. The drill also comprises a chip guide section 30 provided along the extension direction of the chip discard groove 23 in the rake face 24. The chip guide section 30 has at least one guide groove extending along the extension direction of the chip discard groove 23, from a ridge line at which the cutting blade 22 is provided or the vicinity of the ridge line.
NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY (Japan)
DENSO DAISHIN CORPORATION (Japan)
DENSO CORPORATION (Japan)
Inventor
Hayasaka Takehiro
Shamoto Eiji
Nam Soohyun
Abstract
A rotation control unit 11 controls the rotation of a main shaft 2 by a rotation mechanism 10. A movement control unit 13 brings a cutting tool 4 into contact with a workpiece 3 by means of a conveyance mechanism 12 whilst the main shaft 2 is rotating, and performs processing by means of the cutting tool 4. The rotation control unit 11 controls the main shaft rotation speed so as to accelerate or decelerate the rotation of the main shaft 2. The movement control unit 13 brings the cutting tool 4 into contact with the workpiece 3 after the rotation control unit 11 has started the rotation of the main shaft 2, and separates the cutting tool 4 from the workpiece 3 during acceleration control or deceleration control of the main shaft rotation speed by the rotation control unit 11.
patents
