WO2011048892A1 - Dispositif de guidage de mouvement - Google Patents

Dispositif de guidage de mouvement Download PDF

Info

Publication number
WO2011048892A1
WO2011048892A1 PCT/JP2010/065953 JP2010065953W WO2011048892A1 WO 2011048892 A1 WO2011048892 A1 WO 2011048892A1 JP 2010065953 W JP2010065953 W JP 2010065953W WO 2011048892 A1 WO2011048892 A1 WO 2011048892A1
Authority
WO
WIPO (PCT)
Prior art keywords
main body
member main
lid member
rolling
load
Prior art date
Application number
PCT/JP2010/065953
Other languages
English (en)
Japanese (ja)
Inventor
勝也 飯田
裕紀 庄司
隆 松本
Original Assignee
Thk株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thk株式会社 filed Critical Thk株式会社
Publication of WO2011048892A1 publication Critical patent/WO2011048892A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/068—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track
    • F16C29/0692—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque
    • F16C29/0695—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque with balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps

Definitions

  • the present invention relates to a motion guide device in which a track shaft and a moving member are relatively movably engaged via rolling elements such as a ball or a roller, such as a linear guide device, a feed screw device, and a ball spline device.
  • a spline shaft and a nut member are relatively linearly combined through a large number of balls, and are used for a torque transmission unit or the like in an industrial robot.
  • a linear guide device that is used in a linear guide mechanism such as a machine or a conveyance device and guides a movable body such as a table on a fixed portion such as a bed or a saddle is known.
  • the ball spline device As the ball spline device, one disclosed in Japanese Utility Model Laid-Open No. 2-109012 is known.
  • the ball spline device described in these documents includes a spline shaft in which a rolling surface of a plurality of balls is formed along the longitudinal direction, and a nut member assembled to the spline shaft via a large number of balls. It is configured.
  • the nut member has a load rolling surface that forms a load passage of a ball facing the rolling surface of the spline shaft, and a nut body including a return passage through which the ball rolls, and the load
  • An infinite circulation of the ball comprising a direction change path for connecting the passage and the return passage to complete an infinite circulation path of the ball and a pair of lid members fixed to both side surfaces of the nut body. Accordingly, the nut member can be freely moved along the longitudinal direction around the spline shaft.
  • the lid member is mounted between the lid member main body on which the outer peripheral side guide surface of the direction changing path is formed, and the lid member main body and the nut main body, and the inner peripheral side guide of the direction changing path.
  • the lid member is composed of a turn plate having a surface, and the lid member having the direction changing path is completed by combining the lid member body and the turn plate.
  • the ball rolling surface is formed with a plurality of strips such as two strips, four strips, and six strips on the spline shaft according to the shaft diameter of the spline shaft.
  • the member also has a plurality of infinite circuit paths for the ball.
  • the lid member forming a part of the nut member has a plurality of direction change paths, and the lid member main body and the turn plate constituting the lid member also correspond to this.
  • the inner peripheral guide surface of the direction change path is disposed on the turn plate, the balls entering and exiting the direction change path pass between the nut main body and the lid member main body through the turn plate. Therefore, it is necessary to form a through hole for the ball overlapping the load passage and the return passage of the nut body in the turn plate.
  • the present invention has been made in view of such problems, and the object of the present invention is to reduce the dimensional accuracy of the turn plate and to facilitate its manufacture while ensuring smooth circulation of the balls.
  • An object of the present invention is to provide a motion guide device that can be easily assembled.
  • the movement guide device of the present invention that achieves the above object is assembled with a raceway shaft in which a plurality of rolling surfaces of a rolling element are formed along the longitudinal direction, and is assembled to the orbital axis via the rolling body,
  • a rolling member having an infinite circulation path of the rolling element including a load path, a return path, and a direction changing path of the rolling element, and movable along the longitudinal direction of the track axis.
  • the moving member has a plurality of load rolling surfaces that constitute the load passage so as to face each rolling surface of the track shaft, and has a return passage corresponding to each load rolling surface.
  • a pair of lid members fixed to both end surfaces of the moving member main body in the moving direction and provided with the direction changing path.
  • the lid member is sandwiched between the lid member main body fixed to the moving member main body and provided with the outer peripheral side guide surface of the direction changing path, and the lid member main body and the moving member main body, A plurality of turn plates having an inner peripheral side guide surface that constitutes the direction changing path facing the outer peripheral side guide surface of the lid member main body.
  • the lid member that is mounted on the moving member main body and constitutes a part of the moving member includes the lid member main body and a plurality of turn plates.
  • the number of through-holes corresponding to the load passage and the return passage of the moving member main body is reduced, and the dimensional accuracy of the turn plate can be relaxed by that amount, and the manufacture thereof can be facilitated.
  • the turn plate can be easily assembled to the lid member main body and the moving member main body, and the moving member can be easily assembled accordingly. .
  • FIG. 2 is a partially cutaway perspective view of the ball spline device shown in FIG. 1.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is a perspective view which shows the nut main body of the ball spline apparatus shown in FIG. It is a perspective view which shows the cover member main body of the ball
  • FIG. 1 and 2 show an example of an embodiment in which the present invention is applied to a ball spline device which is a kind of motion guide device
  • FIG. 1 is a side view
  • FIG. 2 is a perspective view with a part cut away.
  • the ball spline device includes a spline shaft 1 having a substantially cylindrical cross section, and a nut member 2 which is formed in a substantially cylindrical shape and is assembled to the spline shaft 1 via a large number of balls 3 as rolling elements.
  • the nut member 2 is configured to reciprocate freely around the spline shaft 1 in the axial direction.
  • the spline shaft 1 corresponds to the track shaft of the present invention
  • the nut member 2 corresponds to the moving member of the present invention.
  • the nut member 2 includes a metal nut body 4 and a pair of lid members 5 that are fixed to both ends of the nut body 4 in the axial direction using fixing bolts 50.
  • the nut body 4 corresponds to the moving member body of the present invention. 2 shows a state in which one lid member 5 is removed from the nut body 4 in order to show the internal structure of the nut member.
  • each rolling surface 10 of the ball 3 is formed along the axial direction on the outer peripheral surface of the spline shaft 1, and the ball 3 rolls along the rolling surface 10 while the nut member 2 and the spline shaft 1.
  • a load is applied between
  • the shape of each rolling surface 10 in a cross section perpendicular to the longitudinal direction is formed into a circular arc shape, that is, a shape composed of a single arc having a radius of curvature slightly larger than the radius of curvature of the ball spherical surface.
  • the rolling surface 10b is composed of the rolling surface 10a and the rolling surface 10b adjacent to each other, and a plurality of groups are formed on the outer peripheral surface of the spline shaft 1 at equal intervals. Thereby, it is possible to transmit rotational torque between the nut member 2 and the spline shaft 1.
  • the rolling surface 10 of 2 groups and 4 strips is formed on the outer peripheral surface of the spline shaft 1, but the rolling surface of 3 groups 6 strips or 4 groups 8 strips is formed. You can also
  • the nut member 2 comprising the combination of the nut body 4 and the pair of lid members 5 has an infinite circulation path for the balls 3, and the infinite circulation path corresponds to each rolling surface 10 of the spline shaft 1.
  • Each infinite circulation path includes a load path through which the ball 3 rolls while applying a load between the spline shaft 1 and the nut body 4, and a return path provided in the nut body corresponding to the load path.
  • the ball 3 is made up of a direction changing path that changes the rolling direction of the ball 3 180 degrees between the load path and the return path and moves the ball 3 back and forth between these paths.
  • the direction changing path is formed in the lid member 5.
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1 and shows the arrangement of the load passage 30 and the return passage 31 with respect to the nut body 4.
  • a load passage groove 40 having an inner diameter slightly larger than the ball diameter is formed at a position facing the rolling surface 10 of the spline shaft 1 on the inner peripheral surface of the nut body 4 formed in a substantially cylindrical shape.
  • a load rolling surface 41 is formed at the deepest portion of the load passage groove 40 so as to face the rolling surface 10 of the spline shaft 1.
  • the ball 3 is in contact with the rolling surface 10 of the spline shaft 1 and the load rolling surface 41 of the nut body 4 inside the load passage groove 40, and a load is applied between the spline shaft 1 and the nut body 4.
  • the load passage 30 is configured by the rolling surface 10 of the spline shaft 1 and the load rolling surface 41 of the nut body 4 facing each other.
  • the load rolling surface 41 has a circular arc shape in cross section perpendicular to the longitudinal direction thereof, like the rolling surface 10 of the spline shaft 1.
  • each ball 3 and each rolling surface 10 of the spline shaft 1 or each load rolling surface 31 of the nut member 2 contact in each load passage 30 is 90 degrees with respect to the adjacent load passage in the circumferential direction of the spline shaft 1. Is different. As a result, the nut member 2 can reciprocate along the spline shaft 1 while applying any load acting in a direction other than the axial direction of the spline shaft 1. Further, the opening of the load passage groove 40 toward the spline shaft 1 is formed to have an opening width slightly smaller than the diameter of the ball, and even when the spline shaft 1 is extracted from the nut member 2, 3 is configured not to fall out of the load passage groove.
  • the return path and the direction change path have a circular cross section whose inner diameter is slightly larger than the diameter of the ball, and the ball 3 rotates inside the return path 31 and the direction change path 32 in an unloaded state.
  • the nut body 4 enters the return passage 31.
  • the ball 3 that has entered the return passage 31 rolls through the return passage 31 in an unloaded state, and then enters a direction change path 32 provided in the other lid member 5. After rolling in an unloaded state, it is returned to the load passage 30.
  • the nut member 2 moves along the spline shaft 1 with such infinite circulation of the balls 3.
  • FIG. 4 is a perspective view showing the nut body 4.
  • the nut body 4 has a through-hole 42 through which the spline shaft 1 is inserted, and is formed in a substantially cylindrical shape.
  • Four load passage grooves 40 are formed along the axial direction on the inner peripheral surface of the nut body 4.
  • the load passage groove 40 is formed such that the width of the opening facing the spline shaft 1 is narrower than the diameter of the ball 3 and the inside has an inner diameter slightly larger than the diameter of the ball 3. Therefore, the nut body 4 is formed using wire cut electric discharge machining.
  • the return passages 31 are formed in the nut body at four positions corresponding to the respective load passage grooves. These return passages 31 are formed as holes that penetrate the nut body 4.
  • reference numeral 43 denotes a tap hole into which a fixing bolt 50 penetrating the lid member is screwed.
  • each lid member 5 mounted on the nut body 4 is composed of a lid member body 6 and a pair of turn plates 7.
  • FIG. 5 is a perspective view of the lid member body observed from the contact surface side with the nut body
  • FIG. 6 is a perspective view of the turn plate observed from the contact surface side with the lid member body
  • FIG. 6 is a perspective view showing a state in which a pair of turn plates 7 are assembled to the lid member body 6.
  • the lid member body 6 has a through-hole through which the spline shaft 1 is inserted, and is formed in a substantially cylindrical shape. Seal protrusions 60 are formed at four locations corresponding to the running surface 10. These seal projections 60 are loosely fitted on the rolling surface 10 of the spline shaft 1, and the gap between the lid member main body 6 and the spline shaft 1 is kept constant along the circumferential direction of the spline shaft 1. An inlet on the side of the load passage 30 is formed in cooperation with the turn plate 7.
  • the hatched area in FIG. 5 is the contact surface 62 between the lid member main body 6 and the nut main body 4, and there is a pair of contact surfaces 62 across the through hole.
  • a fitting region 63 of the turn plate 7 is provided adjacent to the contact surface 62.
  • a step portion corresponding to the thickness of the turn plate 7 is provided at the boundary between the fitting region 63 and the contact surface 62.
  • the lid member body 6 is fixed to the nut body using a fixing bolt 50, and a pair of through holes 61 through which the fixing bolt 50 is inserted are provided in the lid member body. These through holes are opened in the contact surface 62 and are not provided in the fitting region. That is, the fixing bolt 50 penetrates only the lid member main body 6 without penetrating the turn plate 7, and has a structure in which the fastening force of the fixing bolt 50 does not act locally on the turn plate 7. ing.
  • the cover member main body 6 is formed with four change grooves 64 that form a part of the direction changing path 32. These change grooves 64 are provided at the boundary between the contact surface 62 and the fitting region 63, and an outer peripheral guide surface 65 of the direction change path 32 is formed inside the change groove 64.
  • the outer circumferential guide surface 65 has a semicircular cross section perpendicular to the rolling direction of the ball 3, and one end of the ball 3 in the rolling direction is connected to the load passage groove 40 of the nut body 4. On the other hand, the other end is connected to the return passage 31 of the nut body 4. Further, a guide portion 71 provided on the turn plate 7 is fitted in the conversion groove 64.
  • the turn plate 7 includes a plate portion 70 as a plate-like holding portion that fits into a fitting region of the lid member main body 6, and a substantially semicircular shape protruding from the plate portion 70, and a conversion groove of the lid member main body 6. 64 and a guide portion 71 fitted to 64.
  • a pair of guide portions 71 are formed at both ends of the plate portion 70, and one turn plate 7 corresponds to two conversion grooves 64. That is, since the four conversion grooves 64 are provided in the lid member main body 6, two turn plates 7 are attached to one lid member main body 6.
  • an inner peripheral side guide surface 72 of the direction changing path 32 is formed along the circumferential direction on the outer peripheral surface of the guide portion 71 protruding in a substantially semicircular shape.
  • the inner circumferential guide surface 72 has a semicircular cross section perpendicular to the rolling direction of the ball 3, and one end of the ball 3 in the rolling direction is connected to the load passage groove 40 of the nut body 4. On the other hand, the other end is connected to the return passage 31 of the nut body 4. Therefore, an introduction port 73 of the load passage 30 is formed in the plate portion 70 with substantially the same cross-sectional shape as the load passage groove 40, and the introduction port 73 is continuous with the inner circumferential guide surface 72.
  • a pair of positioning studs 74 are provided on the contact surface of the plate portion 70 with the nut body 4, that is, on the surface opposite to the formation surface of the guide portion 71. These positioning studs 74 are fitted into a reference hole 44 formed in the axial end surface of the nut body 4 to position the turn plate 7 with respect to the nut body 4. That is, when the positioning stud 74 is fitted into the reference hole 44 of the nut body 4, the guide portion 71 of the turn plate 7 is positioned between the load passage groove 40 and the return passage 31 of the nut body 4, and the guide portion 71.
  • the inner peripheral side guide surface 72 formed in the above is connected to both the load passage groove 40 and the return passage 31.
  • the guide portion 71 of the turn plate 7 is fitted into the conversion groove 64 of the lid member body 6 as shown in FIG. To do. Since the outer peripheral guide surface 65 of the direction change path 32 is formed in the inside of the change groove 64, and the inner peripheral side guide surface 72 of the direction change path 32 is formed in the guide portion 71 of the turn plate 7. When the guide portion is fitted into the change groove, the direction change path 32 having an inner diameter slightly larger than the diameter of the ball 3 is completed as shown in FIG.
  • reference numeral 51 in FIG. 7 denotes a jig insertion port used when the nut member 2 is press-fitted into a mounting hole provided in a mechanical device or the like, and a jig inserted into the jig insertion port 51.
  • each lid member 5 includes two turn plates 7, and each turn plate 7 is provided with a guide portion 71 and an introduction port 73 corresponding to the two direction change paths 32.
  • the guide portion and the introduction port must correspond exactly to the load passage 30 and the return passage 31 of the nut body, and the dimensional accuracy of the turn plate Need to be strictly managed.
  • the two turn plates 7 combined with the same lid member main body 6 have the fitting regions 63 in the lid member main body 6 separated from each other, and each turn plate 7 is individually connected to the lid member main body 6. Since the positioning is possible, the turn plate 7 can be easily assembled to the lid member main body 6, and the nut member 2 of the ball spline device can be easily assembled accordingly.
  • the fixing bolt 50 for fastening the lid member 5 to the nut body 4 penetrates the lid member body 6 but does not penetrate the turn plate 7, and the turn plate 7 is connected to the nut body 4. It is fixed to the nut body 4 while being sandwiched between the lid member body 6. That is, even if the fixing bolt 50 is firmly fastened to fix the lid member 5 to the nut body 4, the fixing bolt 50 does not penetrate the turn plate 7, and the fastening force of the fixing bolt 50 is the turn plate. 7 does not extend locally. For this reason, even if the lid member main body 6 is firmly fixed to the nut main body 4, the turn plate 7 is not deformed, and the guide portion 71 and the introduction port 73 provided in the turn plate 7 are connected to the nut main body 4. It is possible to accurately correspond to the load passage groove 40 and the return passage 31.
  • the fixing bolt 50 does not penetrate the turn plate 7, and the turn plate 7 has the positioning stud 74 with respect to the reference hole 44 of the nut body 4 and the guide portion 71 with the conversion groove 64 of the lid member body 6.
  • the turn plate 7 has the positioning stud 74 with respect to the reference hole 44 of the nut body 4 and the guide portion 71 with the conversion groove 64 of the lid member body 6.
  • a slight gap is provided in the fitting state between the positioning stud 74 of the turn plate 7 and the reference hole 44 of the nut body 4, and the guide portion 71 of the turn plate 7 and the conversion groove 64 of the lid member body 6 If a slight gap is also provided in the fitted state, the fixing position of the turn plate 7 can be freely changed between the nut body 4 and the lid member body 6 by the gap.
  • the turn plate 7 moves in the fitting region 63 of the lid member body 6. 3 is moved to an optimal position that does not impede circulation. That is, according to the fixing structure of the turn plate 7 as described above, even if the allowable range for the dimensional accuracy of the turn plate 7 is expanded, it is possible to ensure the smooth circulation of the ball 3, and easily by that much. It becomes possible to manufacture the ball spline device at low cost.
  • the two turn plates 7 combined with the same lid member main body 6 have the same shape, there is an advantage that they can be manufactured at low cost.
  • a linear guide device in which a slider moves along a track rail, and a nut member is screwed around a screw shaft.
  • the present invention can also be applied to a feed screw device, a ball bushing device in which a nut member reciprocates around a round shaft, and the like.
  • the rolling element may be a roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention se rapporte à un dispositif de guidage de mouvement permettant d'assouplir la précision de dimension de plaques tournantes (7) tout en garantissant une rotation régulière d'éléments roulants (3), de sorte que les plaques tournantes puissent être facilement produites et assemblées. Un élément mobile (2) fixé à un arbre de trajectoire (1) par l'intermédiaire des éléments roulants (3) est pourvu d'un corps principal d'élément mobile (4) comportant une pluralité de surfaces de roulement porteuses (41) et de passages de retour (31) correspondant aux surfaces de roulement porteuses (41), lesdites surfaces de roulement porteuses (41) étant opposées aux surfaces de roulement (10) de l'arbre de trajectoire (1) pour constituer des passages de charge (30) ; et d'une paire d'éléments de fermeture (5) qui sont fixés aux deux surfaces d'extrémité du corps principal d'élément mobile (4) dans la direction de déplacement de celui-ci et qui sont pourvus de chemins de rotation (32). Chaque élément de fermeture (5) est pourvu d'un corps principal d'élément de fermeture (6) qui est fixé au corps principal d'élément mobile (4) et qui est pourvu de surfaces de guidage périphériques extérieures (65) des chemins de rotation (32), et d'une pluralité de plaques tournantes (7) qui sont coincées par le corps principal d'élément de fermeture (6) et le corps principal d'élément mobile (4) et qui comportent des surfaces de guidage périphériques intérieures (72) qui sont opposées aux surfaces de guidage périphériques extérieures (65) du corps principal d'élément de fermeture (6) pour constituer les chemins de rotation (32).
PCT/JP2010/065953 2009-10-19 2010-09-15 Dispositif de guidage de mouvement WO2011048892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-240699 2009-10-19
JP2009240699A JP2011085247A (ja) 2009-10-19 2009-10-19 運動案内装置

Publications (1)

Publication Number Publication Date
WO2011048892A1 true WO2011048892A1 (fr) 2011-04-28

Family

ID=43900132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/065953 WO2011048892A1 (fr) 2009-10-19 2010-09-15 Dispositif de guidage de mouvement

Country Status (3)

Country Link
JP (1) JP2011085247A (fr)
TW (1) TW201135091A (fr)
WO (1) WO2011048892A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4325076A1 (fr) * 2022-08-16 2024-02-21 Chuan-Yu Lee Ensemble cannelure à billes et composant de refusion de billes associé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10458477B2 (en) * 2017-03-28 2019-10-29 Minebea Mitsumi Inc. Seal for rolling bearing and rolling bearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035619B1 (fr) * 1969-05-09 1975-11-18
JPS63133636U (fr) * 1987-02-23 1988-09-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035619B1 (fr) * 1969-05-09 1975-11-18
JPS63133636U (fr) * 1987-02-23 1988-09-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4325076A1 (fr) * 2022-08-16 2024-02-21 Chuan-Yu Lee Ensemble cannelure à billes et composant de refusion de billes associé

Also Published As

Publication number Publication date
JP2011085247A (ja) 2011-04-28
TW201135091A (en) 2011-10-16

Similar Documents

Publication Publication Date Title
US8123407B2 (en) Ball spline device
US4444443A (en) Unlimited sliding ball bearing spline assembly
TWI388749B (zh) 滾珠螺桿機構
US10495209B2 (en) Actuator
JPS5848775B2 (ja) 無限摺動用ボ−ルスプライン軸受
EP2514999B1 (fr) Ensemble formant vis sphérique doté d'éléments de déviation d'un seul tenant
JP4867785B2 (ja) 直動案内装置
US20130139629A1 (en) Rolling element screw assembly
WO2011048892A1 (fr) Dispositif de guidage de mouvement
CN113892003B (zh) 滚珠丝杠机构和直线移动装置
JPWO2009069478A1 (ja) ローラねじ及びローラねじのローラの循環方法
JP4285286B2 (ja) 直動案内軸受装置
US4515416A (en) Linear slide bearing
WO2015155928A1 (fr) Dispositif de roulement
JPWO2009041176A1 (ja) 直線案内装置
EP2514997A1 (fr) Ensemble vis écrou
US20220003298A1 (en) Ball screw device
JP2010249229A (ja) 運動案内装置
JPH05126148A (ja) 直動転がり案内ユニツト
JP2006234032A (ja) 直動案内軸受装置
JP5085303B2 (ja) 運動装置
JPWO2009037931A1 (ja) 転動体循環タイプの直線案内装置
JP2011085243A (ja) 運動案内装置
JP7485722B2 (ja) アクチュエータ
JP4932538B2 (ja) ねじ装置及びその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10824743

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 10824743

Country of ref document: EP

Kind code of ref document: A1