Abstract: A method of manufacturing a bearing device for a wheel, the method including forming an inner shaft so that an outside diameter of the inner shaft at a first portion is smaller than an outside diameter of the inner shaft at a second portion which is adjacent to the first portion, the peripheral surface of the inner shaft at the first portion is to be heat-treated, and the peripheral surface of the inner shaft at the second portion is not to be heat-treated, and the first portion has a predetermined length in an axial direction, and heat-treating the peripheral surface of the inner shaft at the first portion, and finishing a peripheral surface of the inner shaft by lathe turning whereby a step is not formed at a border between the first portion and the second portion.

Abstract: A block execution sequence display system includes: a machine tool that has numerical control and sequence control; a programmable controller that executes a sequence program; a numerical control device that executes a NC program; block execution sequence array display means for displaying a block execution sequence array in which sequence functional blocks and a NC program execution block are arranged in an execution sequence; selecting means for selecting one of blocks in the array; and NC functional block execution sequence array display means for, when the NC program execution block is selected by the selecting means, displaying a NC functional block execution sequence array in which a plurality of NC functional blocks are arranged in an execution sequence.

Abstract: An apparatus includes: a cam that has two cam members disposed facing each other and produces thrust in an axis direction; an attracting member that creates friction force by attracting the cam members into contact with the attracting member by magnetic attraction force; an attracted member that is attached to one cam member of the two so as to rotate integrally together with the one cam member and be relatively movable in the axis direction, and that is attracted by the attracting member into contact with the attracting member so that the friction force is produced; a first return spring that exerts elastic force on the attracted member so as to move the attracted member away from the attracting member against the magnetic attractive force; and a second return spring that exerts elastic force on the one cam member.

Abstract: A program includes a parameter numeric value and a parameter code and a parameter name that are associated with the parameter numeric value. A dialog box information creation processing unit recognizes the parameter code and the parameter name, which are included in the program, as a parameter item, and creates dialog box information from the recognized parameter code and parameter name and the associated parameter numeric value. The parameter numeric value within the created dialog box information is editable on a dialog box display screen. When the parameter numeric value is updated, a process of changing the corresponding parameter numeric value in the program to the updated parameter numeric value is executed.

Abstract: When a forced commutation mode ends, a switchover to a sensorless control mode is made. The sensorless control mode immediately after the switchover to the sensorless control mode is executed with a power source current maximum value set at a value higher than a rated current value of a motor. The sensorless control mode immediately after the switchover is executed only over a predetermined period of time, and, after a lapse of the predetermined period of time, a steady sensorless control mode is executed. In the steady sensorless control mode, the power source current maximum value is set at a value equal to the rated current value of the motor.

Abstract: When a short-circuited FET is identified as one of low-side FETs, maximum phase voltages of three phases are detected when a steering operation is performed by a driver, and the detected maximum phase voltages of the three phases are compared with one another to identify a short-circuit phase. On the other hand, when a short-circuited FET is identified as one of high-side FETs, minimum phase voltages of the three phases are detected when a steering operation is performed by the driver, and the detected minimum phase voltages of the three phases are compared with one another to identify a short-circuit phase.

Abstract: An electronic control unit includes a control board that is fixed to a heat sink that serves as a base, and a case that is fitted to the heat sink to close its open end to thereby form an accommodation space for the control board. Further, the case has a folded-back portion that is folded back from the open end into the case and that elastically contacts the heat sink.

Abstract: Disclosed are a method and apparatus for determining acceptance/rejection of fine diameter wire bonding of semiconductor devices, LED devices, and the like, which has been impossible with conventional methods, such as the method by image processing, with high accuracy and with no contact.

Abstract: A ball spline includes a connecting part of a cage of a spline nut has a turning ball receiving part adapted to receive balls which are turning from a no-load raceway part, and a turned ball receiving part adapted to receive the balls which are forwarded to a main passage after turning. An outer diameter of the turning ball receiving part is made larger than an outer diameter of the turned ball receiving part.

Abstract: A wheel truing apparatus adapted for use in a cylindrical grinding machine wherein a work head with a work spindle for support of a workpiece and a wheel head with a grinding wheel for grinding the workpiece are mounted on a bed for relative movement in a Z-axis direction parallel with the rotation axis of the work spindle and in an X-axis direction crossing the Z-axis direction, characterized in that the wheel truing apparatus comprises a rotary drive portion mounted on the work head or a member united therewith, and a wheel truing tool supported on the rotary drive portion for rotation therewith, the wheel truing tool being provided at its outer periphery with a truing portion for truing a grinding surface of the wheel brought into contact therewith, wherein the rotary drive portion is placed in a position adjacent to said work head in a tooling area defined by a stroke of the relative movements of said wheel head and said work head in the Z-axis direction and apart from said work spindle radially outward a

Abstract: A telescopic shaft (5) has an inner shaft (12) and a tubular outer shaft (13) that are fitted to each other so that they can move relative to each other in the axial direction and that they can transmit torque to each other. A plurality of balls (14) are aligned between respective raceway grooves (15; 16) of the inner shaft (12) and the outer shaft (13). Limiting mechanisms (20A; 20B) are provided that limit the amount of relative rotation to not more than a predetermined amount of the inner shaft (12) and the outer shaft (13) when a ball (14) comes off the raceway grooves (15; 16). The limiting mechanisms (20A; 20B) include a pair of engagement sections (21, 22; 23, 24) engageable with each other in a circumferential direction (C1). The engagement sections (21, 22; 23, 24) are provided at ridges (25, 26) and recesses (27, 28) that are adjacent to the raceway grooves (15; 16) of the inner shaft (12) and the outer shaft (13), respectively.

Abstract: A vehicle steering apparatus (1) comprises: a control device (12) which controls an actuation of an electric motor (18); a control housing (H) which partitions an accommodation chamber (100) which accommodates the control device (12); an adjacent housing (27, 28; 280; 35A) which is adjacent to the control housing (H); and a heat-conducting member (96; 96A; 96B; 96C; 96D; 96E). The adjacent housing (27, 28; 280; 35A) is opposite to the electric motor (18) with the control housing (H) interposed therebetween. The heat-conducting element (96; 96A; 96B; 96C; 96D; 96E) comprises: an adjacent section (97) which is adjacent to a heat-generating element (83) of the control device (12) so that heat can be conducted; and a connected section (98; 98A; 98B; 98C; 98D; 98E) that is connected to the adjacent housing (27, 28; 280; 35A) so that heat can be conducted.

Abstract: A command rotation speed is set to an initial rotation speed, and a forced commutation mode is started. In the forced commutation mode, a rotation speed is increased by a predetermined increase amount each time and forced commutation is executed until the rotation speed reaches a set rotation speed. Then, a switchover to the sensorless control mode is made when the rotation speed reaches the set rotation speed (S4) and a rotor position becomes detectable.

Abstract: A speed reduction mechanism includes: a speed reduction unit that includes an input member formed of an external gear that makes circular motion about a rotation axis with an eccentric amount, and a rotation force applying member formed of an internal gear that is in mesh with the input member; and a lubricating oil supply unit that supplies lubricating oil to a bearing of the speed reduction unit. The lubricating oil supply unit includes an oil tank arranged outside of the rotation force applying member, an oil delivery passage that delivers the lubricating oil to the oil tank, and a first oil introduction passage that introduces the lubricating oil from the oil tank to the bearing. The lubricating oil is delivered to the oil delivery passage through pumping action of the input member based on the circular motion.

Abstract: A reduction-transmission mechanism includes: an input member formed of an external gear that makes circular motion with an eccentric amount; a rotation force applying member formed of an internal gear that is in mesh with the input member; and output members that receive and output rotation force applied to the input member by the rotation force applying member, and that are passed through the respective pin insertion holes. Each of the output members is provided with a needle roller bearing at a portion that is able to contact an inner periphery, which defines a corresponding one of the through-holes, and the input member has third oil supply passages that extend from the center hole to the pin insertion holes, and lubricating oil is supplied to the needle roller bearings through the third oil supply passages by centrifugal force generated in accordance with rotation of the motor shaft.

Abstract: A truing device of a grinding machine includes: a truer that corrects a shape of a grinding wheel; a swivel table that supports the truer such that the truer is swivelable about a swivel axis Ac; detecting means for directly detecting a distance from a truing edge position of the truer, which contacts the grinding wheel during correction of the shape of the grinding wheel, to a swivel center O of the swivel table; and control means for controlling the truing edge position of the truer with respect to the grinding wheel based on the distance L detected by the detecting means to true the grinding wheel.

Abstract: When one of six FETs has short-circuit faulted, a controllable region identification unit stops driving of an electric motor, and then performs processes for determining whether a short-circuit fault has occurred, and when a short-circuit fault has occurred, for identifying the position of the FET that has short-circuit faulted based on phase voltages (induced voltages) VU, VV, and VW of phases. When the position of the FET that has short-circuit faulted is identified, the controllable region identification unit performs a controllable region identification process. In detail, the controllable region identification unit identifies a “possible region,” an “indeterminate region,” and a “impossible region” based on phase voltages VU, VV, and VW of the phases.

Abstract: A propeller shaft includes a first shaft and a second shaft. The first shaft has a torque transmission face in which a plurality of fine grooves extending in a first direction (face width direction) is formed. The second spline shaft is coupled to the first spline shaft so as to be movable relative to the first spline shaft in the axial direction of the first spline shaft, and has a torque transmission face in which a plurality of second fine grooves extending in a second direction that crosses the first direction is formed.

Abstract: A rear wheel steering system includes a rear rack shaft that slides in a vehicle-width direction to steer a pair of rear wheels, a recess formed in the rear rack shaft, and a pin member that is fitted into the recess from the outer side of the rear rack shaft, and is retracted to be disengaged from the recess. The pin member is fitted into the recess to lock sliding of the rear rack shaft in a neutral position, and the pin member placed in a retracted state is disengaged from the recess to cancel slide lock on the rear rack shaft. The rear rack shaft has guide grooves formed on respective sides of the recess in a longitudinal direction of the rear rack shaft so as to be contiguous with the recess, and used to guide the pin member, placed in the advanced state, toward the recess.

Abstract: A steering column includes an impact absorbing mechanism that absorbs an impact through contraction, that is, movement of an outer tube relative to an inner tube in the event of a secondary collision. Capsules are fixed to extended portions of a vehicle body-side bracket so as to be detachable when a load higher than or equal to a predetermined load, directed toward a front of a vehicle, is applied to the body-side bracket. Guide members oriented to extend toward the front of the vehicle are fixedly fastened, using bolts and nuts, to a mounting stay that constitutes a vehicle body with the capsules held therebetween. The steering column detached from the vehicle body-side bracket in the event of the secondary collision makes collapsing movement while the paired extended portions extending at both ends in a vehicle-width direction of the vehicle body-side bracket slide over upper faces of the guide members.