Abrégé

A ball spline having reinforcement bush parts includes a spline shaft having concave track grooves formed to extend along the longitudinal direction thereof; a nut part in which the spline shaft is inserted and movable along the longitudinal direction thereof; and a plurality of balls provided between the nut part and the spline shaft to circulate, wherein: the nut part includes a nut which is a hollow body where the spline shaft is inserted, and retainers which are hollow bodies which are provided at longitudinally opposite sides of the nut and into which the spline shaft is inserted; two spline parts and two reinforcement bush parts are provided at the nut part; some of the balls circulate and move between a track groove and a load track groove and along a no-load circulation part; and the remainder of the balls roll circulate and move along the reinforcement bush parts.

Classes IPC  ?

• F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement

Abrégé

A ball spline with detour tracks includes spline shaft, nut part movable along a longitudinal direction of the spline shaft, and balls between the nut part and the spline shaft, wherein the nut part includes nut adapted to insert the spline shaft thereinto and retainers on longitudinal sides of the nut, the spline shaft includes tracks extended along the longitudinal direction, the nut includes load track grooves formed in longitudinal direction on inner peripheral surface into which the spline shaft is inserted and non-load circulating portions formed in the longitudinal direction, each retainer includes circulating grooves on the inner peripheral surface to face the load track groove and non-load circulating portion, the balls run between the tracks and the load track grooves, and each track includes track groove formed in longitudinal direction of the spline shaft and detour tracks whose longitudinal sides are connected to the track groove.

Classes IPC  ?

• F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement

Abrégé

The present invention relates to a roller (150) for a cross roller bearing and a cross roller bearing having same, the roller comprising: an outer ring (110) having a V-shaped outer ring raceway (111) formed on an inner diameter side thereof; and an inner ring (130) having a V-shaped inner ring raceway (131) facing the outer ring raceway (111) formed on an outer diameter side thereof, wherein the roller is arranged orthogonally along the circumferential direction between the inner ring raceway (131) and the outer ring raceway (111), and the end of the side facing the outer ring raceway (111) in the longitudinal direction is formed as a convex surface (151) that outwardly protrudes.

Classes IPC  ?

• F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
• F16C 33/34 - RouleauxAiguilles

Abrégé

The present invention relates to a linear stage comprising: a rail having rail tracks formed on both sides thereof in the width direction; a block having, on both sides thereof in the width direction, block tracks, which face the rail tracks and form a track part together with the rail tracks, and having, therein in the width direction of the block track, a circulating hole formed in the longitudinal direction so as to reciprocate on the rail in the longitudinal direction; end caps, which are coupled to both sides in the longitudinal direction of the block, and have circulating recessed parts curved to be recessed on both sides thereof in the width direction so as to form a circulating path; a plurality of rolling elements rolling along the track part, the circulating hole, and the circulating path and circulating therethrough; and a ball screw coupled to the block, wherein the ball screw includes: a ball nut inserted into and coupled to the block; and a screw shaft extending in the longitudinal direction such that both ends thereof are rotatably coupled to the rail, and thus, if the screw shaft is rotated, the bock moves in the longitudinal direction along the rail together with the ball nut.

Classes IPC  ?

• F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
• F16H 25/20 - Mécanismes à vis

Abrégé

The present invention relates to a ball spline having a reinforcement bush part, comprising: a rod-shaped spline shaft having at least one concave track groove formed to extend along the longitudinal direction thereof; a nut part in which the spline shaft is inserted and movable along the longitudinal direction thereof; and a plurality of balls provided between the nut part and the spline shaft to circulate, wherein: the nut part includes a nut which is a hollow body into which the spline shaft is inserted, and retainers which are hollow bodies which are provided at longitudinally opposite sides of the nut and into which the spline shaft is inserted; at least one spline part and at least one reinforcement bush part are provided at the nut part; some of the balls change direction in spline circulation grooves of longitudinally opposite side retainers and circulate and move between a track groove and a load track groove and along a no-load circulation part; and the others of the balls roll while being in contact with the outer surface of the spline shaft, and circulate and move along the reinforcement bush part.

Classes IPC  ?

• F16C 29/08 - Dispositions pour couvrir ou protéger les chemins de roulement
• F16C 29/00 - Paliers pour pièces à déplacement uniquement linéaire

Produits et services

Bearings other than for vehicles (parts of machines); linear guide other than for vehicles (parts of machines); rings other than for vehicles [parts of machines]; valves other than for vehicles (parts of machines); ball bushings other than for vehicles (parts of machines); bushing other than for vehicles [parts of machines]; springs other than for vehicles (parts of machines); shafts other than for vehicles (parts of machines); couplings other than for vehicles (parts of machines); cocks other than for vehicles (parts of machines).

Abrégé

The present invention relates to a ball spline (100) having a bypass track, comprising: a rod-shaped spline shaft (110); a nut part into which the spline shaft (110) is inserted and which can move in the longitudinal direction of the spline shaft; and a plurality of balls (150) which are provided between the nut part and the spline shaft (110) and circulate. The nut part comprises: a nut (120) which is a hollow body into which the spline shaft (110) is inserted; and retainers (130) which are hollow bodies provided on both longitudinal sides of the nut (120) and into which the spline shaft (110) is inserted. The spline shaft (110) has at least one concave track part extending longitudinally. The nut (120) has, on an inner surface part (121) which is a hollow body into which the spline shaft (110) is inserted, at least one concave load track groove (125) formed longitudinally, and at least one no-load circulation part (127) parallel to the load track groove (125) and formed longitudinally. A retainer (130) has at least one curved concave circulation groove (133) one side of which faces an end of the load track groove (125) and the other side of which faces an end of the no-load circulation part (127). The balls (150) change direction in circulation grooves (133) of the retainers (130) on both longitudinal sides, and circulate and move between the track part and the load track groove (125) and along the no-load circulation part (127). The track part comprises: a track groove (111) formed longitudinally; and a bypass track part (111-1) both longitudinal sides of which are connected to the track groove (111).

Classes IPC  ?

• F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
• F16C 33/32 - Billes

Produits et services

Bearings, as parts of machines other than for vehicles; linear guides that are used to help carry loads and ensure straight and level linear motion as parts of machines other than for vehicles; piston rings being engine part other than for vehicles; valves being parts of machines other than for vehicles; ball bushings for use as parts of machines other than for vehicles; bushing for use as parts of machines other than for vehicles; springs being parts of machines other than for vehicles; shafts for pumps as parts of machines other than for vehicles; couplings for machines other than for vehicles; cocks in the nature of valves being parts of machines other than for vehicles

Produits et services

Bearings, as parts of machines; Machine guides [parts of machines]; Grease rings [parts of machines]; Valves [parts of machines]; Ball bushings; Bushings [parts of machines]; Springs [parts of machines]; Shafts for machines; Couplings for machines; Cocks [valves] of metal parts of machines.

Abrégé

The present invention relates to a linear motion guiding device comprising: a guide rail having rail rolling grooves that are formed at both sides thereof and extend in a longitudinal direction; and a sliding main body movably provided at the guide rail in a longitudinal direction, and including a block body, and end caps positioned at both longitudinal end portions of the block body, wherein: the block body has a block rolling groove formed so as to be recessed in a longitudinal direction on the surface facing the guide rail, and has a through-hole, which is parallel to the block rolling groove and is formed in a longitudinal direction; the block rolling groove forms a rolling path, along which a rolling body rolls, together with the rail rolling groove, and a guide member made from synthetic resin and having a return passage formed therein is provided in the through-hole; round end piece parts made from synthetic resin are provided at both longitudinal end portions of the block body; the round end piece part has an inner peripheral guide part formed at the side facing the end cap, the end cap has an outer peripheral guide part, which is formed at the side facing the round end piece part and forms a direction changing path together with the inner peripheral guide part, and the direction changing path has an outwardly protruded and curved shape in which both sides thereof communicate with the rolling path and the return passage; and an end piece inclined part is formed at the end portion, which comes in contact with the block body, of the round end piece part such that an extension line of the block rolling groove is connected to the end piece inclined part.

Classes IPC  ?

• F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement

Abrégé

The present invention relates to a linear motion guide and, more particularly, to a linear motion guide in which a sufficient amount of oil is supplied to a ball by using a ball retainer formed of a porous material containing oil, and a side tube or a top plate, etc. is integrally formed in a track, such that assembly efficiency is improved, assembly quality is enhanced, and quiet operation is possible; and an assembly method.

Classes IPC  ?

• F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement
• F16C 33/66 - Pièces ou détails particuliers pour la lubrification

Produits et services

Ball bearings for use in machines, namely, carrier device, conveyor system or positioning system; Ball rings for bearings for machines, namely, carrier device, conveyor system or positioning system; Ball transfer table units for use in carrier device, conveyor system or positioning system; Ball transfer units for use in carrier system, conveyor system or positioning system; Ball valves being parts of machines; Bearing brackets for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Bushing assembly for conveyor pulleys; Couplings for machines; Linear actuators; Linear motions machines for moving objects; Linear motors; Machine coupling and belting except for land vehicles; Machine coupling and transmission components, except for land vehicles, and parts therefor; Machine couplings and transmission components except for land vehicles; Machine couplings and transmissions, except for land vehicles; Machine elements not for land vehicles, namely ball transfer units; Machine elements not for land vehicles, namely, ball transfer table units; Machine elements not for land vehicles, namely, pneumatic ball transfer units; Machine parts, namely, flexible shaft couplings; Machine parts, namely, bearings and bushings; Machine parts, namely, roller bearings; Machine parts, namely, bearing housings; Machine parts, namely, bearing inserts; Machine parts, namely, bearings; Machine parts, namely, roll mill bearings; Machine parts, namely, couplers and semi-couplers of synthetic material; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine parts, namely, rollers coated with synthetic material; Roller Bearings for machines; Shaft bearings for vacuum pumps; shaft coupling as parts of machines; Shaft couplings for machines; Shaft couplings, not for land vehicles; and Shafts for pumps

Abrégé

A linear motion guide unit is provided, which is capable of preventing the variation in the position of a roller cage assembly caused by sliding motions of the roller cage assembly between a first guide rail and a second guide rail, without reducing the number of rollers. The linear motion guide unit includes first and second guide rails having track portions formed concavedly to have a V-shaped section on the faces opposing each other; and a roller cage assembly disposed between the first and second guide rails and having a plurality of rollers located between the first and second guide rails and ring-shaped pinions adapted to surround the rollers.

Classes IPC  ?

• B60N 2/07 - Structure des glissières
• F16C 19/00 - Paliers à contact de roulement pour mouvement de rotation exclusivement

Produits et services

Ball bearings for use in machines, namely, carrier device, conveyor system or positioning system; Ball rings for bearings for machines, namely, carrier device, conveyor system or positioning system; Ball transfer table units for use in carrier device, conveyor system or positioning system; Ball transfer units for use in carrier device, conveyor system or positioning system; Ball valves being parts of machines; Bearing brackets for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Bushing assembly for conveyor pulleys; Couplings for machines; Linear actuators; Linear motions machines for moving objects; Linear motors; Machine coupling and belting except for land vehicles; Machine coupling and transmission components, except for land vehicles, and parts therefor; Machine couplings and transmission components except for land vehicles; Machine couplings and transmissions, except for land vehicles; Machine elements not for land vehicles, namely, ball transfer units; Machine elements not for land vehicles, namely, ball transfer table units; Machine elements not for land vehicles, namely, pneumatic ball transfer units; Machine parts, namely, flexible shaft couplings; Machine parts, namely, bearings and bushings; Machine parts, namely, roller bearings; Machine parts, namely, bearing housings; Machine parts, namely, bearing inserts; Machine parts, namely, bearings; Machine parts, namely, roll mill bearings; Machine parts, namely, couplers and semi-couplers of synthetic material; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine parts, namely, rollers coated with synthetic material; Roller bearings for machines; Shaft bearings for vacuum pumps; Shaft couplings as parts of machines; Shaft couplings for machines; Shaft couplings, not for land vehicles; and Shafts for pumps