CN104358781A - Ball spline bearing - Google Patents
Ball spline bearing Download PDFInfo
- Publication number
- CN104358781A CN104358781A CN201410481881.3A CN201410481881A CN104358781A CN 104358781 A CN104358781 A CN 104358781A CN 201410481881 A CN201410481881 A CN 201410481881A CN 104358781 A CN104358781 A CN 104358781A
- Authority
- CN
- China
- Prior art keywords
- ball spline
- ball
- bearing
- retainer
- shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Abstract
The invention provides a ball spline bearing and belongs to the field of bearings. According to the invention, defects such as late delivery date caused by low transmission efficiency, short service life and complex structure in the prior art are solved. The ball spline bearing comprises a ball spline shaft, a ball splined hub and two bearing pedestals. The ball splined hub contains a jacket, a retainer and several sets of balls. The retainer is interference assembled in the jacket. The balls are symmetrically installed on the retainer and bulge out over the inner surface of the retainer. The balls and a rolling groove are tangent and the ball spline hub can reciprocate in a straight line. The two bearing pedestals contain a first bearing pedestal and a second bearing pedestal. The first bearing pedestal is installed at one end of the ball spline shaft. The second bearing pedestal is mounted at the other end of the ball spline shaft. A seal ring is arranged at two ends of the ball spline hub and contains a framework and a rubber ring. The ball spline bearing has advantages of high transmission efficiency, long service life, simple structure and the like.
Description
Technical field
The invention belongs to field of bearings, relate to a kind of ball spline pair.
Background technique
Spline has generally included splined shaft and hub splines, and spline is a kind of linear motion system, when spline housing utilizes steel ball straight line motion on the splined shaft through precision grinding wherein, and can transmitting torque.Splined shaft has comparatively compact structure, can transmit the load and power that exceed the quata, and have the longer life-span.
On the basis of conventional slip screw mandrel, infiltration and development has gone out ball screw axle, the mechanical component be made up of parts such as screw mandrel, nut, balls, and its effect is straight line motion by converting rotary motion or is rotary motion by translate linear motion.
When moment of torsion has on spline housing or when splined shaft is applied on splined shaft, the loaded ball in three row torque direction just balances, Transmit evenly moment of torsion.When torque direction changes, then other three row loaded ball transmitting torques.Hub splines and splined shaft carry out linear relative movement, and ball is iterative cycles between raceway and backflow.
This structure has the advantages such as net synchronization capability is good, positioning precision is high, transmission reversibility, but transmission efficiency is poor, working life is lower, complex structure and the shortcoming such as cause delivery date slow.
In sum, for solving the structural deficiency of existing a kind of ball spline, need to design that a kind of transmission efficiency is high, the simple ball spline of long service life, structure.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose that a kind of transmission efficiency is high, the simple ball spline pair of long service life, structure.
Object of the present invention realizes by following technical proposal: a kind of ball spline pair, is characterized in that: comprise ball spline shaft, ball spline axle sleeve and diaxon bearing,
Ball spline shaft, ball spline shaft is cylindric and offers some symmetrical rolling grooves on the circumferential surface vertically, and rolling groove cross section is in " V " font;
Ball spline axle sleeve, described ball spline axle sleeve is set on ball spline shaft, described ball spline axle sleeve comprises overcoat, retainer and some groups of balls, described retainer elastic conjunction is in overcoat, described ball symmetry to be arranged on retainer and to protrude retainer internal surface, described ball and rolling groove is tangent and ball spline axle sleeve can along rolling groove straight reciprocating motion;
Diaxon bearing, diaxon bearing is all in " convex " font, diaxon bearing all offers some symmetrical cross-drilled holes and vertical hole, diaxon bearing comprises clutch shaft bearing seat and the second bearing support, described clutch shaft bearing seat is arranged on one end of ball spline shaft, described second bearing support is arranged on the other end of ball spline shaft, ball spline shaft one end is provided with screw section, the other end is provided with anti-slip part, described screw section is provided with retainer nut, described retainer nut is provided with lock screw, described lock screw is resisted against on screw section, described anti-slip part is provided with back-up ring, back-up ring is resisted against the second bearing support end face,
Seal ring, seal ring is arranged on ball spline axle sleeve two ends, described seal ring is provided with several salient points, described seal ring comprises skeleton and rubber ring, described rubber ring is serpentine, described skeleton is L-shaped, and described rubber ring is wrapped in outside skeleton, and described salient point to be arranged on rubber ring and to be positioned at the extended spot of skeleton crosspoint.
In above-mentioned a kind of ball spline pair, described rolling groove quantity has four, described four rolling grooves symmetrical between two and the median plane of two rolling grooves of side and axes intersect acutangulate and are less than 45 degree, on same rolling groove two ball contact points connect become the perpendicular bisector of line segment to cross the center of circle of ball spline shaft section, this straight line is parallel with the line of Central Symmetry salient point with salient point.In this preferred structure, the selection of angle between rolling groove quantity and rolling groove, while guarantee uniform force, improves overall flexibility, enhances working efficiency.
In above-mentioned a kind of ball spline pair, the bi-side of described rolling groove are all in circular arc and the gullet transition of rolling groove.Use circular arc rolling groove in this structure, decrease the area of contact of ball and groove, and then reduce frictional force, improve overall flexibility.
Hinge structure tool of the present invention has the following advantages:
1, in this ball spline pair, diaxon bearing is arranged on ball spline shaft two ends respectively, realizes ball spline shaft thus and rotates around axis circumference;
Ball spline axle sleeve is set on ball spline shaft, by above-mentioned ball and rolling groove tangent, realize ball spline axle sleeve thus along rolling groove straight reciprocating motion.
2, this ball spline pair uses and is arranged on the bearing support at ball spline shaft two ends and the structure of ball spline axle sleeve, and compare like product, this structure is while realizing required function, and structure is simple.
3, when this ball spline pair is installed, selectivity is required to ball spline shaft, both can the high solid shaft of selection intensity, also can select hollow shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of this ball spline pair.
Fig. 2 is the structural representation of ball spline shaft.
Fig. 3 is the structural representation of ball spline axle sleeve.
Fig. 4 is the structural representation of clutch shaft bearing seat in Fig. 3.
Fig. 5 is the structural representation of clutch shaft bearing seat.
In figure, 100, ball spline shaft; 110, rolling groove; 120, anti-slip part; 130, screw section; 200, ball spline axle sleeve; 210, overcoat; 220, fixed groove; 230, retainer; 231, anti-rotation is protruding; 240, slot rolling; 241, bar shaped ball hole; 250, seal ring; 251, rubber ring; 252, skeleton; 253, salient point; 260, ball; 300, bearing support; 310, clutch shaft bearing seat; 311, mounting hole; 312, retainer nut; 313, lock screw; 314, cover plate; 320 second bearing supports.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, ball spline pair comprises ball spline shaft 100 in the preferred embodiment, ball spline axle sleeve 200, diaxon bearing 300, ball spline shaft 100 comprises rolling groove 110, ball spline axle sleeve 200 comprises ball, diaxon bearing 300 comprises internal bearings, ball spline axle sleeve 200 is set on ball spline shaft 100, by the circulating rolling of ball 260 at rolling groove 110, realize moving axially of ball spline axle sleeve 200, diaxon bearing 300 is arranged on the two ends of ball spline shaft 100, the circumference being realized ball spline shaft 100 by diaxon bearing 300 internal bearings is rotated.
As shown in Figure 2, this ball spline shaft 100 comprises and offers some symmetrical rolling grooves 110 vertically, rolling groove 110 cross section is " V " font and " V " font is made up of two sections of circular arcs, compared with traditional round arc section, this " V " point cantact and movement locus is two straight lines between character form structure and ball, increase area of contact, improve the stability of a system, in the present embodiment, ball spline shaft 100 one end is provided with screw section 130 and the other end is provided with anti-slip part 120, the diameter of screw section 130 and anti-slip part 120 is all slightly less than straight 100 footpaths of ball spline shaft.
As shown in Figure 3 and Figure 4, ball spline axle sleeve 200 is sheathed to be arranged on ball spline shaft 100, and ball spline sleeve 200 is hollow cylindrical and comprises: overcoat 210, at the outermost surface of ball spline sleeve 200; Fixed groove 220, ball spline axle sleeve 200 outer surface and offer vertically; Retainer 230, to be installed in overcoat 210 and to be connected with overcoat 210 interference, axially offer two anti-rotations protruding 231 and two anti-rotation convex cross section center lines and fixed groove 220 kernel of section line point-blank, axially offer moving trough in the middle part of anti-rotation projection 231, moving trough and ball spline shaft 100 are fitted; Ball 260, to be arranged in retainer 210 and to expose retainer 210 surface; Seal ring 250, be arranged on the end face of ball spline axle sleeve 200, described seal ring 250 comprises skeleton 252 and rubber ring 251, rubber ring 251 is in serpentine, described skeleton 252 is L-shaped, described rubber ring 251 is wrapped in outside skeleton 252, and salient point to be arranged on rubber ring 251 and to be positioned at the extended spot of skeleton 252 crosspoint.
As shown in Figure 1 and Figure 5, diaxon bearing 300 to be set on ball spline shaft 100 and to be realized the circumferential movement of ball spline shaft 100 by internal bearings, diaxon bearing 300 is made up of clutch shaft bearing seat 310 and the second bearing support 320, clutch shaft bearing seat 310 is arranged on one end of ball spline shaft 100, diaxon bearing 300 is in " convex " shape, diaxon bearing 300 offers some symmetrical cross-drilled holes and vertical hole, ball spline shaft diameter is less than by screw section 130 diameter, can prevent clutch shaft bearing seat 310 from sliding to ball spline shaft 100 central direction, clutch shaft bearing seat 310 exterior edge face is provided with cover plate 314, cover plate 314 4 jiaos offers tapped hole, the connection between cover plate and clutch shaft bearing seat 310 is realized by nut, screw section 130 is provided with retainer nut 312, retainer nut 312 is provided with lock screw 313, lock screw 313 is resisted against on screw section 130, the accident caused because stop-nut 312 loosens in the rotation process of ball spline shaft 100 can be prevented, " convex " shape step both sides of clutch shaft bearing seat 310 all offer two vertical holes, conveniently install and be connected.
As shown in Figure 1, second bearing support 320 is arranged on the other end of ball spline shaft 100, second bearing support 320 is arranged in the anti-slip part 120 of ball spline shaft 100, anti-slip part 120 diameter is less than ball spline shaft 100 diameter, can prevent the second bearing support 320 from sliding to ball spline shaft 100 central direction, between the exterior edge face of the second bearing support 320 and ball spline shaft 100 end face, back-up ring is installed, prevent the bearing in the second bearing support 320 through hole from skidding off, and between back-up ring and ball spline shaft 100 end face, pad is installed, reduce the area of contact of ball spline shaft 100 end face and pad, the replacement of part is facilitated while reducing wear, " convex " shape step both sides of the second bearing support 320 all offer a groove.
As shown in Figure 3, retainer is provided with the slot rolling 240 of " O " font, slot rolling 240 liang of opposite side are parallel and linearly and on one side of slot rolling 240, offer bar shaped ball hole 241, form enclosed space between slot rolling 240 and retainer 230, ball 260 is arranged in slot rolling 240 and bar shaped ball hole 241 given prominence to by ball 260.
When ball spline axle sleeve 200 moves vertically on ball spline shaft 100, ball suits with rolling groove 110 mutually with corresponding and ball exposes retainer 230 part of rolling 110 groove numbers, and ball 260 rolls at bar shaped ball hole 241 and slot rolling 110 Inner eycle with the movement of ball spline axle sleeve 200.
The number of rolling groove 110 is set to four, by symmetrical uniform force, the simple advantage of stress distribution, increases the working life of ball spline shaft 100.
4 rolling grooves 110 any two be divided into one group all organize with another mutually right, in addition and the median plane of two rolling grooves 110 of side and axes intersect acutangulate and be less than 45 degree, after tested, when angulation is 32 degree, working efficiency is higher, on same rolling groove 110 two ball contact points connect become the perpendicular bisector of line segment to cross the center of circle in ball spline shaft 100 cross section, this straight line is parallel with the line of Central Symmetry salient point with salient point, this structure is by the position of scientific design rolling groove 110, while not affecting processing, improve the flexibility of ball at rolling groove 110, enhance working efficiency.
This ball spline pair in an initial condition, ball spline shaft 100 offers some rolling grooves 110, ball spline axle sleeve 200 is made up of parts such as overcoat 210, retainer 230, balls 260, ball 260 to be arranged in retainer 230 and outstanding retainer 230 internal surface, ball 260, in the reciprocal rolling of rolling groove 110 Inner eycle of ball spline shaft 100, realizes ball spline axle sleeve 200 moving axially on ball spline shaft 100; Diaxon bearing 300 inside is provided with circumferential bearing and diaxon bearing 300 is set on ball spline shaft 100, and ball spline shaft 100 realizes circumference by circumferential bearing and rotates.
1, in this ball spline pair, diaxon bearing is arranged on ball spline shaft two ends respectively, realizes ball spline shaft thus and rotates around axis circumference;
Ball spline axle sleeve is set on ball spline shaft, by above-mentioned ball and rolling groove tangent, realize ball spline axle sleeve thus along rolling groove straight reciprocating motion.
2, this ball spline pair uses and is arranged on the bearing support at ball spline shaft two ends and the structure of ball spline axle sleeve, and compare like product, this structure is while realizing required function, and structure is simple.
3, when this ball spline pair is installed, selectivity is required to ball spline shaft, both can the high solid shaft of selection intensity, also can select hollow shaft.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. a ball spline pair, is characterized in that: comprise ball spline shaft, ball spline axle sleeve and diaxon bearing;
Ball spline shaft, ball spline shaft is cylindric and offers some symmetrical rolling grooves on the circumferential surface vertically, and rolling groove cross section is in " V " font;
Ball spline axle sleeve, ball spline axle sleeve is set on ball spline shaft, ball spline sleeve comprises overcoat, retainer and some groups of balls, retainer elastic conjunction is in overcoat, ball symmetry to be arranged on retainer and to protrude retainer internal surface, described ball and rolling groove is tangent and ball spline axle sleeve can along rolling groove straight reciprocating motion;
Diaxon bearing, diaxon bearing comprises clutch shaft bearing seat and the second bearing support and is arranged on ball spline shaft two ends respectively and ball spline shaft can rotate around axis circumference;
Seal ring, seal ring is arranged on the two ends of ball spline axle sleeve, and described seal ring is provided with several salient points, and described salient point is corresponding with rolling groove and fit.
2. a kind of ball spline pair according to claim 1, it is characterized in that: the slot rolling described retainer being provided with " O " font, slot rolling two opposite side is parallel and linearly, slot rolling wherein on offer bar shaped ball hole, ball is arranged in slot rolling and bar shaped ball hole given prominence to by ball.
3. according to a kind of ball spline pair of claim 1 or 2, it is characterized in that: diaxon bearing is all in " convex " shape, clutch shaft bearing seat exterior edge face is fixed with cover plate, ball spline shaft one end is provided with screw section, screw section is provided with retainer nut, retainer nut is provided with lock screw, and lock screw is resisted against on screw section.
4. according to a kind of ball spline pair of claim 1 or 2, it is characterized in that: the ball spline shaft the other end is provided with anti-slip part, and anti-slip part is provided with back-up ring, back-up ring is resisted against the second bearing support end face.
5. according to a kind of ball spline pair of claim 1 or 2, it is characterized in that: seal ring comprises skeleton and rubber ring, rubber ring is serpentine, and skeleton is L-shaped, rubber ring is wrapped in outside skeleton, and described salient point to be arranged on rubber ring and to be positioned at the extended spot of skeleton crosspoint.
6. according to a kind of ball spline pair of claim 1 or 2, it is characterized in that: the bi-side of rolling groove are all in circular arc and the gullet transition of rolling groove.
7. according to a kind of ball spline pair of claim 1 or 2, it is characterized in that: described rolling groove quantity has four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481881.3A CN104358781A (en) | 2014-09-19 | 2014-09-19 | Ball spline bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481881.3A CN104358781A (en) | 2014-09-19 | 2014-09-19 | Ball spline bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358781A true CN104358781A (en) | 2015-02-18 |
Family
ID=52526077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410481881.3A Pending CN104358781A (en) | 2014-09-19 | 2014-09-19 | Ball spline bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200130634A (en) * | 2019-05-10 | 2020-11-19 | 토요 오토메이션 컴퍼니 리미티드 | Gripper device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1413783A2 (en) * | 2000-05-08 | 2004-04-28 | Hihaisuto Seiko Co Ltd | Linear bearing |
| CN102359489A (en) * | 2011-10-22 | 2012-02-22 | 威海利奥泰儆自动化设备有限公司 | Ball spline pair with low friction force and low weight |
| CN203463495U (en) * | 2013-09-05 | 2014-03-05 | 宁波恒力汽配轴承有限公司 | Sliding bearing |
| CN203530645U (en) * | 2013-11-20 | 2014-04-09 | 深圳市捷克德科技有限公司 | Novel sewing machine |
| CN204175790U (en) * | 2014-09-19 | 2015-02-25 | 宁波恒力汽配轴承有限公司 | A kind of ball spline pair |
-
2014
- 2014-09-19 CN CN201410481881.3A patent/CN104358781A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1413783A2 (en) * | 2000-05-08 | 2004-04-28 | Hihaisuto Seiko Co Ltd | Linear bearing |
| CN102359489A (en) * | 2011-10-22 | 2012-02-22 | 威海利奥泰儆自动化设备有限公司 | Ball spline pair with low friction force and low weight |
| CN203463495U (en) * | 2013-09-05 | 2014-03-05 | 宁波恒力汽配轴承有限公司 | Sliding bearing |
| CN203530645U (en) * | 2013-11-20 | 2014-04-09 | 深圳市捷克德科技有限公司 | Novel sewing machine |
| CN204175790U (en) * | 2014-09-19 | 2015-02-25 | 宁波恒力汽配轴承有限公司 | A kind of ball spline pair |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200130634A (en) * | 2019-05-10 | 2020-11-19 | 토요 오토메이션 컴퍼니 리미티드 | Gripper device |
| KR102280510B1 (en) * | 2019-05-10 | 2021-07-22 | 토요 오토메이션 컴퍼니 리미티드 | Gripper device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2000047915A2 (en) | Traction drive transmission | |
| CN102003458B (en) | Turntable bearing for CT (Computed Tomography) machine | |
| US11149826B1 (en) | Planetary rolling micro-jacking device | |
| CN204175790U (en) | A kind of ball spline pair | |
| CN104358781A (en) | Ball spline bearing | |
| CN201747775U (en) | High-speed pure-rolling bearing | |
| CN107061637B (en) | Planet transmission system with planet wheel double-row parallel uniform distribution shunting structure | |
| CN101158371A (en) | Method for realizing conical roller bearing low friction and structure thereof | |
| CN207864418U (en) | Unilateral bearing | |
| CN214698789U (en) | Self-aligning roller bearing | |
| CN203081841U (en) | Double-faced fastening insert bearing | |
| CN109236851A (en) | Axial series dual thrust self-balancing sliding bearing | |
| CN112610599B (en) | Flexible bearing and harmonic reducer | |
| CN105508581B (en) | A kind of hydrodynamic lubrication piston shoes | |
| US3478541A (en) | Roller bearing splines | |
| CN209414391U (en) | A kind of four-point contact ball | |
| CN203239772U (en) | Hub | |
| CN102691722A (en) | Two-degree-of-freedom rotary bearing | |
| CN208417222U (en) | A kind of gear shaft | |
| CN205047683U (en) | Eight steel ball rzeppa universal joint | |
| CN105508580B (en) | A kind of hydrodynamic lubrication method and structure | |
| CN205423683U (en) | Balanced axle assembly, engine and car | |
| CN209146144U (en) | A kind of anti-friction bearing | |
| KR101701878B1 (en) | Clutch drum having thrust roller member | |
| CN218093945U (en) | High-strength fatigue-resistant cross shaft universal joint shaft sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
|
| RJ01 | Rejection of invention patent application after publication |