CN104675855A - Ball spline set - Google Patents
Ball spline set Download PDFInfo
- Publication number
- CN104675855A CN104675855A CN201310610553.4A CN201310610553A CN104675855A CN 104675855 A CN104675855 A CN 104675855A CN 201310610553 A CN201310610553 A CN 201310610553A CN 104675855 A CN104675855 A CN 104675855A
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- China
- Prior art keywords
- straightway
- circulating element
- load
- splined shaft
- reflux section
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Abstract
The invention discloses a ball spline set which is mainly characterized in that a first circulating element and a second circulating element, which are separate from each other, are arranged in a spline shaft liner sleeving a spline shaft; U-shaped first backflow channels formed by load linear segment, non-load linear segments and first backflow segments are formed in the first circulating element; the load linear segment and the non-load linear segments extend to the end part of the first circulating element, and are opened and connected with the second circulating element; the second circulating element at least comprises second semicircular groove-shaped backflow channels; and the second backflow channels and the first backflow segments are communicated to form backflow passages. Accordingly, the first circulating element and the second circulating element can be assembled respectively and balls can be directly loaded in the load linear segment and the non-load linear segments, so that the difficulty of loading the balls is reduced, the ball loading efficiency is improved, further, the production efficiency is improved and economic benefits are increased.
Description
Technical field
The present invention relates to ball spline group, it is relevant with linear actuator.
Background technique
Common ball spline group as shown in Figure 1, it is mainly in splined shaft (not shown) upper sleeve through one retainer 11 and a lining 12, the outer circumferential face of this retainer 11 arranges continuous occluded ellipse shape return flow path 111 and rolls for multiple ball 13 Infinite Cyclic, and one end of this lining 12 is embedded a circulation extremity piece 14 again, this circulation extremity piece 14 is shaped a semicircular recess 141 to should the return flow path 111 of retainer, this recess 141 of mat increases the breasting area of ball 13 when return flow path 111 turns round, avoids ball 13 to deviate from time turning round.
But, because the return flow path 111 on this retainer 11 is occluded ellipse shape return flow path, the holes of this return flow path 111 of one connection must be set in time assembling on lining 12, carried out the installation of ball 13 again by the holes of this lining 12, install comparatively inconvenience and the disappearance that has installation efficiency to be hoisted.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ball spline group, improves the high and disappearance that packaging efficiency is low of plain ball spline group assembling difficulty.
For solving the problem, the invention provides a kind of ball spline group, comprising:
One splined shaft, axially extend along one and have an outer surface, the outer surface of this splined shaft offers multiple outer rolling ditch in interval vertically;
One splined shaft lining, have a perforation, and the perforation of this splined shaft lining has an internal surface, this internal surface offers multiple interior rolling groove vertically, this splined shaft lining wears this splined shaft with this perforation, and is formed as a load path between this interior rolling groove and this outer rolling ditch;
One first circulating element, hollow cylinder structure and there is an outer surface, the outer surface of this first circulating element arranges multiple first backflow road, respectively this first backflow road is configured as U-shaped aspect, and respectively this first backflow road comprises a load straightway, a non-load straightway and one first reflux section respectively, this load straightway and this non-load straightway interval are arranged and one end that one end extends to the first circulating element opens, and the other end that this first reflux section is linked to this load straightway and this non-load straightway forms U-shaped aspect; This first circulating element is placed in the perforation of this splined shaft lining, and the interior rolling groove of the load straightway of this first circulating element relative to this splined shaft lining and the outer rolling ditch of this splined shaft; And
One second circulating element, for having the hollow-core construction of an outer surface, the outer surface of this second circulating element arranges multiple second backflow road, and respectively this second backflow road at least comprises one second reflux section; This second circulating element is placed in the perforation of this splined shaft lining, and the two ends of each second reflux section of this second circulating element are communicated with one end of this load straightway and this non-load straightway opening respectively, this second reflux section and this first road that refluxes form a return flow line, and in this return flow line accommodating multiple ball and can in this return flow line Infinite Cyclic.
Further, described second reflux section is half slot structure.
Further, described load straightway and this non-load straightway are that parallel interval is arranged.
Further, the two ends of described first circulating element are respectively one first and support end and the first binding end, it is open that this load straightway and this non-load straightway extend to this first binding end, and the first binding end of this first circulating element arranges multiple connecting part, and the two ends of this second circulating element are respectively one second to end and one second binding end, second binding end of this second circulating element arranges multiple cooperation connecting part, and the cooperation connecting part of this second circulating element can be incorporated into the connecting part of this first circulating element.
Further, described connecting part coordinates connecting part to be concave-convex fit structure with this.
Further, the perforation two ends internal surface of described splined shaft lining arranges an annular groove more respectively, and an each accommodating C shape button respectively in this annular groove, and respectively first of this C shape deduction of points this first circulating element not adjoining supports second of end and the second circulating element and support end.
Further, described load straightway has an identical length of straigh line with this non-load straightway, and this load straightway is the kenel run through, and this non-load straightway and this first reflux section are all the groove structural form with bottom surface, simultaneously, this second circulating element is in axially having one second circulating element length, and this second circulating element length is more than or equal to the length of straigh line of 1/10, and this second circulating element length is less than or equal to the length of straigh line of 1/3.
Further, described second circulating element is in axially having one second circulating element length, and this second reflux section has one second reflux section radius value, and this second circulating element length is more than or equal to the second reflux section radius value and be less than or equal to the second reflux section radius value of three times.
Further, one second straightway that described second backflow road comprises this second reflux section and extended by these the second reflux section two ends respectively, respectively this second straightway of this second circulating element is communicated with this load straightway and this non-load straightway respectively, and respectively this second straightway respectively to the structural form that should be shaped to this load straightway or this non-load straightway be communicated with it.
The present invention is through setting point other first circulating element and the second circulating element, and the first circulating element with straightway to open-ended to provide bead loading, ball directly can load the straightway of return flow line, reduce the difficulty of bead loading, improve bead loading efficiency, and and then reduce cost of production, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is the part-structure schematic diagram of plain ball spline group.
Fig. 2 is the three-dimensional combination appearance figure of ball spline group of the present invention.
Fig. 3 is the stereochemical structure decomposing schematic representation of ball spline group of the present invention.
Fig. 4 is the combination view of the partial component perspective of ball spline group of the present invention.
Fig. 5 is the first circulating element of ball spline group of the present invention and the combination schematic diagram of the second circulating element.
Fig. 6 is that another of the first circulating element of ball spline group of the present invention and the second circulating element implements aspect schematic diagram.
Description of reference numerals
10 are ball spline groups 11 is retainers
111 are return flow paths 12 is linings
13 are balls 14 is circulation extremity pieces
141 is recesses
20 are splined shafts 21 is outer surfaces
211 are outer rolling ditches 30 is splined shaft linings
31 are perforation 311 is internal surfaces
312 are interior rolling grooves 313 is annular grooves
40 are first circulating elements 41 is outer surfaces
42 be first support end 43 are first binding ends
431 is connecting parts 44 is first backflow roads
441 is load straightways 442 is non-load straightways
443 are first reflux sections 50 is second circulating elements
51 is outer surfaces 52 be second support end
53 is second binding ends 531 is coordinate connecting part
54 are second backflow roads 541 is second reflux sections
542 are second straightways 60 is balls
70 are C shape button X is axially
Ls is length of straigh line Lt is the second circulating element length
R is the second reflux section radius value
Embodiment
The preferred embodiment of ball spline group of the present invention as shown in Figures 2 to 5, comprises:
One splined shaft 20, extend along an axial X, and this splined shaft 20 has an outer surface 21, the outer surface 21 of this splined shaft 20 offers multiple outer rolling ditch 211 in X interval vertically.
One splined shaft lining 30, there is a perforation 31, and the perforation 31 of this splined shaft lining 30 has an internal surface 311, this internal surface 311 vertically X offers multiple interior rolling groove 312, this splined shaft lining 30 wears this splined shaft 20 with this perforation 31, and be formed as a load path between the interior rolling groove 312 of this splined shaft lining 30 and the outer rolling ditch 211 of this splined shaft 20, and the perforation 31 two ends internal surface 311 of this splined shaft lining 30 arranges an annular groove 313 more respectively.
One first circulating element 40, hollow cylinder structure and there is an outer surface 41, the two ends of this first circulating element 40 are respectively one first and support end 42 and the first binding end 43 simultaneously, the outer surface 41 of this first circulating element 40 arranges multiple first backflow road 44, respectively this first backflow road 44 is configured as U-shaped aspect, and respectively this first backflow road 44 comprises a load straightway 441 respectively, one non-load straightway 442 and one first reflux section 443, this load straightway 441 and this non-load straightway 442 parallel interval are arranged and this first binding end 43 that one end extends to this first circulating element 40 one end opens, and this load straightway 441 has an identical length of straigh line Ls with this non-load straightway 442, and the other end that this first reflux section 443 is linked to this load straightway 441 and this non-load straightway 442 forms U-shaped aspect, the kenel of this load straightway 441 for running through, this non-load straightway 442 and this first reflux section 443 are then all the groove structural form with bottom surface, and the first binding end 43 of this first circulating element 40 arranges multiple connecting part 431, this first circulating element 40 is placed in the perforation 31 of this splined shaft lining 30, and the interior rolling groove 312 of load straightway 441 this splined shaft lining 30 relative of this first circulating element 40 and the outer rolling ditch 211 of this splined shaft 20.
One second circulating element 50, hollow ring structure and there is one second circulating element length Lt on axial X, this second circulating element length Lt is more than or equal to the length of straigh line Ls of 1/10, and this second circulating element length Lt is less than or equal to the length of straigh line Ls of 1/3, and this second circulating element 50 has an outer surface 51, the two ends of this second circulating element 50 are respectively one second and support end 52 and one second binding end 53 simultaneously, the outer surface 51 of this second circulating element 50 arranges multiple second backflow road 54, respectively this second backflow road 54 at least comprises one second reflux section 541, this second reflux section 541 is half slot structure, and this second reflux section 541 has one second reflux section radius value R, and this second circulating element length Lt is more than or equal to the second reflux section radius value R and be less than or equal to the second reflux section radius value R of three times.
And the second binding end 53 of this second circulating element 50 arranges multiple cooperation connecting part 531, the cooperation connecting part 531 of this second circulating element 50 can be incorporated into the connecting part 431 of this first circulating element 40, and this connecting part 431 of the present embodiment coordinates connecting part 531 for concave-convex fit structure with this, this second circulating element 50 is placed in the perforation 31 of this splined shaft lining 30, and this second circulating element 50 sticks to the first binding end 43 of this first circulating element 40 with this second binding end 53 and is combined with each this cooperation connecting part 531 through each this connecting part 431, make the two ends of each second reflux section 541 of this second circulating element 50 be communicated with one end of this load straightway 441 and this non-load straightway 442 opening respectively simultaneously, then the second reflux section 541 of this second circulating element 50 road 44 that refluxes with first of this first circulating element 40 respectively forms a return flow line, and in this return flow line accommodating multiple ball 60 and can in this return flow line Infinite Cyclic, and
Two C shape buttons 70, be placed in the interior also difference of annular groove 313 this first circulating element 40 adjoining at these splined shaft lining 30 two ends first supports end 52 to second of end 42 and the second circulating element 50.
More than for ball spline group of the present invention in combination after structural configuration and feature, and ball spline group of the present invention is in time assembling ball 60, can first this first circulating element 40 is accommodating is assembled in this splined shaft lining 30, then the load straightway 441 of this first circulating element 40 extends to this first binding end 43 part with this non-load straightway 442 then becomes wide-open state, so just can extend to this first binding end 43 part by this load straightway 441 with this non-load straightway 442 and carry out bead loading, reduce the difficulty of assembling ball 60, and the efficiency of assembling ball 60 can be improved, and and then reduce cost of production.
And after respectively this ball 60 is packed into this first circulating element 40, this second circulating element 50 is in the exterior ball 60 of this splined shaft lining 30, then again the second circulating element 50 being equipped with ball 60 is assembled in the perforation 31 of this splined shaft lining 30, and the connecting part 431 making the cooperation connecting part 531 of this second circulating element 50 be incorporated into this first circulating element 40 completes assembling; Certainly, in the annular groove 313 at these splined shaft lining 30 two ends, arrange this C shape more respectively buckle 70 and can more improve integrally-built stability.
And as in the embodiment of above-mentioned Fig. 2 to Fig. 5, second backflow road 54 of this second circulating element 50 is second reflux sections 541 being only included as half slot structure, but the enforcement aspect in this second backflow road 54 is not as limit, this the second backflow road 54 is except at least comprising this second reflux section 541, more can extend one second straightway 542 respectively by the two ends of this second reflux section 541 as shown in Figure 6, and the second straightway 542 of this second circulating element 50 is communicated with this load straightway 441 and this non-load straightway 442 of this first circulating element 40 respectively after assembling, and the second straightway 542 of this second circulating element 50 is respectively to the structural form that should be shaped to this load straightway 441 or this non-load straightway 442 be communicated with it, that is, be configured as with the second straightway 542 that this load straightway 441 is communicated with and identically with this load straightway 441 run through form, the second straightway 542 be communicated with this non-load straightway 442 is then configured as the identical groove structural form with bottom surface of non-load straightway 442 with this, and the change of this structural form do not affect this case for the identical object reached and effect.
From the above, the present invention is through two components this first circulating element 40 and this second circulating element 50 being set to be separated, and make the first circulating element 40 open at the first binding end 43 with load straightway 441 and the extension of non-load straightway 442 and provide the use of assembling ball 60, ball 60 directly can load the straightway of return flow line, use and reduce bead loading difficulty, raising bead loading efficiency, improve integral production efficiency simultaneously, create higher economic benefit.
Claims (9)
1. a ball spline group, is characterized in that: comprise:
One splined shaft, axially extend along one and have an outer surface, the outer surface of this splined shaft offers multiple outer rolling ditch in interval vertically; .
One splined shaft lining, have a perforation, and the perforation of this splined shaft lining has an internal surface, this internal surface offers multiple interior rolling groove vertically, this splined shaft lining wears this splined shaft with this perforation, and is formed as a load path between this interior rolling groove and this outer rolling ditch;
One first circulating element, hollow cylinder structure and there is an outer surface, the outer surface of this first circulating element arranges multiple first backflow road, respectively this first backflow road is configured as U-shaped aspect, and respectively this first backflow road comprises a load straightway, a non-load straightway and one first reflux section respectively, this load straightway and this non-load straightway interval are arranged and one end that one end extends to the first circulating element opens, and the other end that this first reflux section is linked to this load straightway and this non-load straightway forms U-shaped aspect; This first circulating element is placed in the perforation of this splined shaft lining, and the interior rolling groove of the load straightway of this first circulating element relative to this splined shaft lining and the outer rolling ditch of this splined shaft; And
One second circulating element, for having the hollow-core construction of an outer surface, the outer surface of this second circulating element arranges multiple second backflow road, and respectively this second backflow road at least comprises one second reflux section; This second circulating element is placed in the perforation of this splined shaft lining, and the two ends of this second reflux section of this second circulating element are communicated with one end of this load straightway and this non-load straightway opening respectively, this second reflux section and this first road that refluxes form a return flow line, and in this return flow line accommodating multiple ball and can in this return flow line Infinite Cyclic.
2. ball spline group as claimed in claim 1, is characterized in that: described second reflux section is half slot structure.
3. ball spline group as claimed in claim 1, is characterized in that: described load straightway and this non-load straightway are that parallel interval is arranged.
4. ball spline group as claimed in claim 1, it is characterized in that: the two ends of described first circulating element are respectively one first and support end and the first binding end, it is open that this load straightway and this non-load straightway extend to this first binding end, and the first binding end of this first circulating element arranges multiple connecting part, and the two ends of this second circulating element are respectively one second to end and one second binding end, second binding end of this second circulating element arranges multiple cooperation connecting part, the cooperation connecting part of this second circulating element can be incorporated into the connecting part of this first circulating element.
5. ball spline group as claimed in claim 4, is characterized in that: described connecting part coordinates connecting part to be concave-convex fit structure with this.
6. ball spline group as claimed in claim 4, it is characterized in that: the perforation two ends internal surface of described splined shaft lining arranges an annular groove more respectively, and an each accommodating C shape button respectively in this annular groove, and respectively first of this C shape deduction of points this first circulating element not adjoining support second of end and the second circulating element and support end.
7. ball spline group as claimed in claim 1, it is characterized in that: described load straightway has an identical length of straigh line with this non-load straightway, and this load straightway is the kenel run through, and this non-load straightway and this first reflux section are all the groove structural form with bottom surface, simultaneously, this second circulating element is in axially having one second circulating element length, this the second circulating element length is more than or equal to the length of straigh line of 1/10, and this second circulating element length is less than or equal to the length of straigh line of 1/3.
8. ball spline group as claimed in claim 1, it is characterized in that: described second circulating element is in axially having one second circulating element length, and this second reflux section has one second reflux section radius value, and this second circulating element length is more than or equal to the second reflux section radius value and be less than or equal to the second reflux section radius value of three times.
9. ball spline group as claimed in claim 2, it is characterized in that: one second straightway that described second backflow road comprises this second reflux section and extended by these the second reflux section two ends respectively, respectively this second straightway of this second circulating element is communicated with this load straightway and this non-load straightway respectively, and respectively this second straightway respectively to the structural form that should be shaped to this load straightway or this non-load straightway be communicated with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610553.4A CN104675855A (en) | 2013-11-26 | 2013-11-26 | Ball spline set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610553.4A CN104675855A (en) | 2013-11-26 | 2013-11-26 | Ball spline set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675855A true CN104675855A (en) | 2015-06-03 |
Family
ID=53311309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310610553.4A Pending CN104675855A (en) | 2013-11-26 | 2013-11-26 | Ball spline set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675855A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827659A (en) * | 2018-08-29 | 2018-11-16 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat testboard rotation drive structure |
| CN109029891A (en) * | 2018-08-29 | 2018-12-18 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat jolts experimental testing station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375305A (en) * | 1980-02-25 | 1983-03-01 | Hiroshi Teramachi | Circulating type ball spline bearing |
| JP2010159840A (en) * | 2009-01-09 | 2010-07-22 | Jtekt Corp | Ball spline |
| JP2010159839A (en) * | 2009-01-09 | 2010-07-22 | Jtekt Corp | Ball spline |
| JP2010242950A (en) * | 2009-04-10 | 2010-10-28 | Jtekt Corp | Ball spline |
| CN201786929U (en) * | 2010-02-03 | 2011-04-06 | 全球滚珠科技股份有限公司 | Ball spline device |
-
2013
- 2013-11-26 CN CN201310610553.4A patent/CN104675855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375305A (en) * | 1980-02-25 | 1983-03-01 | Hiroshi Teramachi | Circulating type ball spline bearing |
| JP2010159840A (en) * | 2009-01-09 | 2010-07-22 | Jtekt Corp | Ball spline |
| JP2010159839A (en) * | 2009-01-09 | 2010-07-22 | Jtekt Corp | Ball spline |
| JP2010242950A (en) * | 2009-04-10 | 2010-10-28 | Jtekt Corp | Ball spline |
| CN201786929U (en) * | 2010-02-03 | 2011-04-06 | 全球滚珠科技股份有限公司 | Ball spline device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827659A (en) * | 2018-08-29 | 2018-11-16 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat testboard rotation drive structure |
| CN109029891A (en) * | 2018-08-29 | 2018-12-18 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat jolts experimental testing station |
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Application publication date: 20150603 |