Abstract: The present invention provides a one-way clutch comprising an outer race, an inner race, a roller adapted to transmit torque between the outer race and the inner race, a cage having a window for holding the roller, a spring disposed in the pocket and adapted to bias the roller toward an engagement direction with respect to the cam surface, and a side plate provided at its inner diameter portion with spline grooves into which a crankshaft of an engine is fitted, and wherein the side plate is secured to the outer race by inserting rivets into through holes provided in the outer race and through holes provided in the side plate and by caulking the rivets.

Abstract: The present invention provides a one-way clutch of roller type comprising an outer race having a plurality of pockets provided at their inner peripheries with cam surfaces, an inner race coaxially arranged with respect to the outer race, rollers disposed in the respective pockets and adapted to transmit torque between the outer race and the inner race when engaged by the cam surfaces, a cage having a cylindrical portion with windows for holding the rollers and a flange portion extending outwardly from the cylindrical portion in the outer diameter direction and rotatable relative to the outer race, each window having a circumferential window width smaller than a diameter of the roller, and springs disposed in the respective pockets between the outer race and the respective pockets and adapted to bias the rollers toward engagement directions with respect to the cam surfaces, and wherein an inclined surface portion inclined in the axial direction is provided on at least a circumferential part of the inner periph

Abstract: The present invention provides a one-way clutch comprising an outer race having at least one pocket provided at its inner periphery with a cam surface and having a stepped portion formed on an inner diameter side of an axial one end face of the outer race; an inner race spaced apart from the outer race radially inside of the outer race and coaxially arranged for a relative rotational movement; a roller disposed in the pocket and adapted to transmit torque between the outer race and the inner race when engaged by the cam surface; a cage rotatable relative to the outer race and having a cylindrical portion, a flange portion fitted in the stepped portion and extending outwardly from the cylindrical portion in the outer diameter direction and a window formed in the cylindrical portion and having a circumferential width smaller than a diameter of the roller and adapted to hold the roller; and a spring disposed in the pocket and adapted to bias the roller toward an engagement direction with respect to the cam surfa

Abstract: The present invention provides a one-way clutch comprising an outer race provided with a pocket, an inner race arranged coaxially with the outer race, a roller adapted to transmit torque between the outer race and the inner race, a cage having a cylindrical portion with a window and a flange portion extending from the cylindrical portion in an outer diameter direction, the window being adapted to hold the roller and enclosed at its four sides, a spring disposed in the pocket between the outer race and the roller and adapted to bias the roller toward an engagement direction with respect to the cam surface, and a side plate secured to abut against an axial one end face of the outer race and provided at its inner diameter portion with spline grooves, and wherein the side plate has at least one grooved portion having one end communicated with the pocket of the outer race and the other end opened to an outer diameter end of the side plate.

Abstract: The present invention provides a one-way clutch of roller type comprising an outer race having at least one pocket provided at its inner periphery with a cam surface, an inner race spaced apart from the outer race radially inside of the outer race and coaxially arranged for a relative rotational movement, a roller disposed in the pocket and adapted to transmit torque between the outer race and the inner race when engaged by the cam surface, a cage having a cylindrical portion with a window for holding the roller and a flange portion extending outwardly from the cylindrical portion in the outer diameter direction and rotatable relative to the outer race, the window having a circumferential window width smaller than a diameter of the roller, and a spring disposed in the pocket and adapted to bias the roller toward an engagement direction with respect to the cam surface, and wherein an inclined surface portion inclined in the axial direction is provided on the inner periphery of the pocket.

Abstract: A one-way clutch of roller type comprises an outer race having pockets provided at their inner peripheries with cam surfaces, an inner race arranged in an inner diameter side of the outer race coaxially, a plurality of rollers disposed in the pockets and adapted to transmit torque between the outer race and the inner race when engaged by the cam surfaces, and accordion springs disposed in the pockets between the outer race and the rollers and having one ends secured to an axial end face of the outer race and adapted to bias the rollers toward engagement directions with respect to the cam surfaces, and the axial end face of the outer race is provided with a discriminating area to which the accordion springs are secured, and the discriminating area is capable of being discriminated from the other areas.

Abstract: Provided is a bearing state diagnostic apparatus in which a sound generated from a bearing is detected by a sound sensor, a detected value of the sound sensor is compared with data which was previously formed, thereby diagnosing a state of the bearing, wherein at least one sound sensor is disposed at a position separated away from an outer surface of a cylindrical support body in which at least one bearing is accommodated, the corresponding bearing and sound sensor are in communication with each other through a detection sound propagation path.

Abstract: A spindle structure in which a noise occurrence due to a tap hole and a screw is effectively prevented. A nut for adjusting a preload of a bearing is threadedly engaged with an outer circumference of a spindle. On an edge of the nut, a plurality of tap holes for balance adjustment are provided at even intervals on a circumference centered around the axis of the spindle and to be parallel to the axial direction of the spindle. These tap holes are countersunk, and a plate screw is threadedly engaged so that an edge of each plate screw is flush with a surface of the nut. In addition, the plate screw is used as a balance weight by changing the length thereof.

Abstract: A spindle structure in which a noise occurrence due to a tap hole and a screw 2007 is effectively prevented. A nut 8 for adjusting a preload of a bearing 5 is threadedly engaged with an outer circumference of a spindle 2. On an edge of the nut 8, a plurality of tap holes for balance adjustment are provided at even intervals on a circumference centered around the axis of the spindle 2 and to be parallel to the axial direction of the spindle 2. These tap holes are countersinked, and a plate screw 11 is threadedly engaged so that an edge of each plate screw 11 is flush with a surface of the nut 8. In addition, the plate screw 11 is used as a balance weight by changing the length thereof.

Abstract: The amount of lubricant oil supplied to a bearing is optimized. A main-shaft lubrication device includes a supply device for variably supplying lubricant oil to bearings which support a main shaft, a collection device for collecting, from the bearings, the lubricant oil supplied from the supply device, a measurement device for measuring the amount of lubricant oil collected by the collection device, and a control device for controlling the amount of lubricant oil to be supplied from the supply device.

Abstract: An object of the present invention is to provide a spindle device for stabilizing a retainer with a minimum quantity of air to be supplied to the bearing. A spindle device includes: supplying unit which supplies air from three or more points spaced in a circumferential direction between outer races and inner races of bearings supporting a spindle; and control unit which controls a supply quantity of air supplied by the supplying unit in such a manner as to independently vary the supply quantity at each of the supplying points.

Abstract: A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A control parameter calculation circuit is provided to obtain control parameters for a drive apparatus control circuit for driving actuators in accordance with the conditions of actuator rotational velocity, the orientation of the movable body, and the position of the movable body, and a control parameter K for the drive apparatus control circuit is varied.

Abstract: An outer race member for a roller type one-way clutch includes a plurality of pawls provided along an outer periphery for engaging with an opposite member, a cam surface formed on an inner periphery, and grooves formed in the inner periphery for disposing block bearings. A radial width of a peripheral portion including the groove is formed larger than a radial width of another portion.

Abstract: A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A control parameter calculation circuit is provided to obtain control parameters for a drive apparatus control circuit for driving actuators in accordance with the conditions of actuator rotational velocity, the orientation of the movable body, and the position of the movable body, and a control parameter K for the drive apparatus control circuit is varied.

Abstract: An outer race member for a roller type one-way clutch, includes a plurality of pawls provided along an outer periphery and engaging with an opposite member, a cam surface formed on an inner periphery, and grooves, formed in the inner periphery, for disposing block bearings. A radial width of a peripheral portion of the groove is formed larger than a radial width of other portion.

Abstract: A oneway clutch device comprises a plurality of rollers interposed between an inner race and an outer race for carrying out torque transmission only at the time of relative rotation in one direction between the inner race and the outer race, springs for biasing these rollers in a direction of engagement, and a retainer having an annular portion to be fitted on the inner race for retaining the rollers and the springs. The retainer is formed with a roller latching piece formed for holding the rollers biased by the springs, together with the inner race in a state that it is not assembled in the outer race.

Abstract: A one-way clutch apparatus is provided with a plurality of rollers interposed as torque-transmitting members between an inner ring and an outer ring and a cam surface formed on an outer peripheral wall of said inner ring such that by a combination of the cam surface and the rollers, transmission of rotating force is performed only in one direction between the inner ring and the outer ring. An inner side wall of a flange of a retainer, said flange being arranged alongside the rollers and inner ring, is provided on a radially inner side thereof with an annular recess. An outer peripheral end wall of the annular recess is located on a radially outer side of the cam surface of the inner ring only at deepest parts of the cam surface to permit supply of lube oil to the rollers through the annular recess of the flange and the deepest parts of the cam surface.