Abstract: A retainer that suppresses retainer sound, includes a main body portion, a plurality of pockets provided in a circumferential direction, and penetrating through the main body portion in a radial direction, and a retaining surface facing a ball, and forming a C shape when viewed from the radial direction. The retaining surface includes a C-shaped outer circumferential corner portion, a C-shaped inner circumferential corner portion, a first retaining surface arranged in a first rotational direction with respect to the ball, and a second retaining surface arranged in a second rotational direction with respect to the ball. The first retaining surface extends along a first spherical surface obtained by rotating a first virtual circle around a virtual line passing through an axial center and a center of the ball. The second retaining surface extends along a second spherical surface obtained by rotating a second virtual circle around the virtual line.

Abstract: A table device includes a ball screw including a male screw member extending in an axial direction and a female screw member meshing with the male screw member and movable in the axial direction according to rotation of the male screw member, a slide device that movably supports the female screw member, and a fixing member to which the slide device is fixed. The fixing member includes a first wall section extending in a first direction and a second wall section extending in a second direction crossing the first direction in a cross section including an axis of the male screw member.

Abstract: A ball screw device having a screw shaft, a nut, a plurality of balls, a carrier constituting a planetary reduction mechanism, a rolling bearing for rotatably supporting the carrier, where the screw shaft includes a screw portion having a spiral-shaped shaft-side ball screw groove on an outer circumferential surface thereof, and a fitting shaft portion, the carrier is fixed to the fitting shaft portion such that relative rotation is not possible, an inner ring raceway of the rolling bearing is formed directly on an outer circumferential surface of the carrier.

Abstract: A cooking oil degradation suppression filter that can effectively and easily suppress degradation of cooking oil without using a filter aid or the like and can prevent a decrease in the taste of food caused by separation of a degradation suppression agent. The cooking oil degradation suppression filter includes fiber (10) and at least one degradation suppression agent (13) selected from a carbonate, a silicate, a tartrate, an oxide, a hydroxide, an alginate, and a phosphate.

Abstract: An application position of a processing force directed radially outward is continuously changed in the circumferential direction of a cylindrical portion (25) while applying the processing force to a part of the cylindrical portion (25) of a hub main body (21) in the circumferential direction. An application position of a processing force directed radially inward is continuously changed in the circumferential direction of a staking portion intermediary body (41) while applying the processing force to a part of the staking portion intermediary body (41) in the circumferential direction.

Abstract: A multi-row ball screw includes a nut having a plurality of spiral grooves on an inner peripheral surface thereof, a screw shaft having a plurality of spiral grooves on an outer peripheral surface thereof, and a plurality of balls disposed so as to be rollable on rolling paths constituted by the plurality of spiral grooves of the nut and the plurality of spiral grooves of the screw shaft. The spiral groove of the nut includes a U-shaped first spiral groove having left and right flanks that are respectively able to come into contact with two-row balls and separated from each other in an axial direction, and two second spiral grooves continuous with each row of the first spiral groove and each having left and right flanks that are able to come into two-point contact with the ball.

Abstract: A ball screw device includes a nut (3), a screw shaft, and a plurality of balls arranged between the nut (3) and the screw shaft. The nut (3) includes a first member (11) disposed to surround the screw shaft, a second member (10) disposed between the screw shaft and the first member (11), and a third member (12) disposed between the first member (11) and the second member (10). The third member (12) includes a laminate body (12A) having a plurality of plates (22a, 22b) laminated in an axial direction. The laminate body (12A) includes an inner surface facing an outer surface of the second member (10). The inner surface of the laminate body (12A) has a shape corresponding to a shape of the outer surface of the second member (10).

Abstract: A toroidal continuously variable transmission. A power roller (40) of the transmission includes a power roller inner ring (50) sandwiched between both disks (1, 2), a power roller outer ring (60) provided in a trunnion (35) and rotatably supporting the power roller inner ring (50), and an inner ring hole (52) provided in the power roller inner ring (50) to extend in an axial direction of the power roller inner ring (50), in which an end surface hole (58) communicating with an inner ring hole (52) is provided in an inner end surface (54) of the power roller inner ring (50), and the end surface hole (58) is closed by a closing member (80) separate from the power roller inner ring (50).

Abstract: A phase adjustment method for a rotation angle sensor configured to detect a rotation angle of a rotor of a brushless motor, the phase adjustment method including: measuring a first rotation speed and a second rotation speed when the brushless motor is driven with a same torque command current to rotate clockwise and counterclockwise, respectively, on a basis of the rotation angle of the rotor detected by the rotation angle sensor; and calculating a correction value to correct a phase of the rotation angle sensor so that a rotation speed difference between the first rotation speed and the second rotation speed decreases.

Abstract: In feature value extraction processing step, feature values are extracted from time-series vibroacoustic data in equipment in operation. In machine learning diagnosis step, accumulated are feature values corresponding to normal equipment-operation-state and general measurement data on equipment. Probability distribution model related to correlation between general measurement data and feature values corresponding to normal equipment-operation-state and constructed through machine learning is fed with general-measurement data and feature values extracted in feature value extraction processing step to calculate degree of anomaly based on probability distribution model.

Abstract: A ball screw device has a screw shaft that has a screw portion having a spiral-shaped shaft-side ball screw groove on an outer peripheral surface thereof, and a carrier integrally formed with the screw portion and constituting a planetary speed-reducing mechanism; a nut that has a spiral-shaped nut-side bass screw portion on an inner peripheral surface thereof; a plurality of balls arranged between the shaft-side ball screw groove and the nut-side ball screw groove; and a rolling bearing for supporting the carrier which has an outer ring having an outer ring raceway, an inner ring raceway provided on a portion facing the outer ring raceway in a radial direction, and a plurality of rolling bodies arranged between the outer ring raceway and the inner ring raceway, which is directly formed on an outer peripheral surface of the carrier.

Abstract: A rolled thread screw includes: a screw part having, on an outer circumferential part of the screw part, thread crests and thread grooves disposed alternately along an axial direction of the rolled thread screw; and a columnar part adjoining at least one of both sides of the screw part in the axial direction. An axial end surface of the columnar part is provided with: a first concave surface concave in the axial direction; a second concave surface positioned to an outer circumference of the first concave surface and being concave in the axial direction; and a salient part positioned on a boundary between the first concave surface and the second concave surface and projecting further than a bottom of the first concave surface and a bottom of the second concave surface, the salient part extending in an arc-like shape along a circumferential direction of the columnar part as viewed in the axial direction.

Abstract: A measuring pressing die (43) is supported by a spherical concave seat (12). A measuring shaft member (45) is disposed coaxially with a reference axis (?) and is linearly guided in a direction of the reference axis (?) between the measuring pressing die (43) and a support table (16). After that, the load application apparatus measures an actual load in the direction of the reference axis (?) applied to the measuring shaft member (45) using a load cell (48) in a state in which the measuring pressing die (43) is pressed against the measuring shaft member (45) while the measuring pressing die (43) is rotated about the reference axis (?).

Abstract: A current detection device includes a current detection unit configured to detect current flowing through a switching element of a lower-side arm; a correction value calculation unit configured to calculate an offset correction value, based on a detection value of the current detected by the current detection unit in a period during which the switching element off during PWM control, and to hold and update the calculated offset correction value; and a correction unit configured to correct, by the offset correction value held by the correction value calculation unit, the detection value of the current detected by the current detection unit in a period during which the switching element is on. The correction value calculation unit is configured to not update the offset correction value in a case where a duty ratio of the PWM control is equal to or less than a duty ratio lower limit value.

Abstract: In a torque sensor, a sleeve is an annular member that is attached to a first rotating member. An intermediate member is an annular member that is placed on an outer circumferential surface of the sleeve. A magnet is an annular member that is placed on an outer circumferential surface of the intermediate member. A yoke is attached to a second rotating member and faces the magnet in a radial direction. A rotating member connecting portion of the sleeve has a cylindrical shape and is contact with the first rotating member. An intermediate member connecting portion is at a position shifted with respect to the rotating member connecting portion in an axial direction. The intermediate member includes a thin portion and a thick portion having a thickness greater than that of the thin portion.

Abstract: A first piece (13) includes a first ring portion (13b) and a second ring portion (13c) which are arranged side by side in an axial direction and an inner diameter and an outer diameter of the first ring portion (13b) are respectively larger than an inner diameter and an outer diameter of the second ring portion (13c). A second piece (16) is obtained by pressing the first piece (13) while the first piece (13) is disposed between a first set and a second set.

Abstract: A bar portion is formed so that an outer circumferential surface on a tip portion side is located on an inner diameter side with respect to an outer circumferential surface of a main portion. On an inner diameter side of a cage, lightened portions obtained by notching in an axial direction from an axial side surface of the main portion are formed separately at positions of the respective bar portions in a circumferential direction. Each lighting portion is formed separately from a surface of a pocket and an axially outer surface of the bar portion formed between a pair of claw portions. An axial dimension T1 of a wall portion formed between an axially outer surface of the bar portion and an inner wall surface of the lightened portion is greater than an axial dimension T2 of the main portion on a bottom portion of the pocket.

Abstract: A retainer that suppresses retainer sound, includes a main body portion, a plurality of pockets provided in a circumferential direction, and penetrates through the main body portion in a radial direction, and a retaining surface that faces a ball, and forms a C shape when viewed from the radial direction. The retaining surface includes a C-shaped outer circumferential corner portion, a C-shaped inner circumferential corner portion, a first retaining surface arranged in a first rotational direction with respect to the ball, and a second retaining surface arranged in a second rotational direction with respect to the ball. The first retaining surface extends along a first spherical surface obtained by rotating a first virtual circle around a virtual line passing through an axial center and a center of the ball. The second retaining surface extends along a second spherical surface obtained by rotating a second virtual circle around the virtual line.

Abstract: A retainer that suppresses retainer sound, includes a main body portion, a plurality of pockets provided in a circumferential direction, and penetrating through the main body portion in a radial direction, and a retaining surface facing a ball, and forming a C shape when viewed from the radial direction. The retaining surface includes a C-shaped outer circumferential corner portion, a C-shaped inner circumferential corner portion, a first retaining surface arranged in a first rotational direction with respect to the ball, and a second retaining surface arranged in a second rotational direction with respect to the ball. The first retaining surface extends along a first spherical surface obtained by rotating a first virtual circle around a virtual line passing through an axial center and a center of the ball. The second retaining surface extends along a second spherical surface obtained by rotating a second virtual circle around the virtual line.

Abstract: A ball screw device includes a nut having an internal thread and two outer peripheral raceway surfaces, a screw shaft having an external thread and two inner peripheral raceway surfaces, a plurality of balls arranged on two rolling paths, and two circulation components provided at one end and the other end of the nut to circulate the balls. The internal thread and the external thread hold the balls. The nut has a cylindrical shape and includes a cylindrical body having the external thread and the outer peripheral raceway surfaces, and two return paths penetrating the cylindrical body in an axial direction parallel to an axis of the screw shaft.