CN201705824U - Ball spline mechanism - Google Patents
Ball spline mechanism Download PDFInfo
- Publication number
- CN201705824U CN201705824U CN2010202117267U CN201020211726U CN201705824U CN 201705824 U CN201705824 U CN 201705824U CN 2010202117267 U CN2010202117267 U CN 2010202117267U CN 201020211726 U CN201020211726 U CN 201020211726U CN 201705824 U CN201705824 U CN 201705824U
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- axle
- keyway
- shaft
- outer 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.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The utility model discloses a ball spline mechanism, which solves the problems that in the prior art that the key on a spline shaft and the internal key groove on a shaft sleeve are easy to be worn due to the action of lateral force, and the shaft sleeve has high axial movement resistance. The ball spline mechanism comprises a shaft (4), a shaft sleeve (3) and key grooves. The bottom surfaces of the key grooves correspondingly arranged on the outer side surface of the shaft (4) and the inner side surface of the shaft sleeve (3) both are circular arc-shape; the key grooves correspondingly arranged on the outer side surface of the shaft (4) and the inner side surface of the shaft sleeve (3) form a cylindrical key groove, a row of linearly arranged steel balls (2) are movably arranged inside the cylindrical key groove, and an end cover (1) is movably arranged at the port of the cylindrical key groove to seal the linearly arranged steel balls (2) in the key groove; and a plurality of key grooves are uniformly formed on both the outer side surface of the shat (2) and the inner side surface of the shaft sleeve (3). The ball spline mechanism has simple structure, small friction between the spline shaft and the sleeve and convenient maintenance.
Description
Technical field
The present invention relates to a kind of dirivig member of machinery, particularly a kind of spline device that between mechanical drive shaft and outer shaft sleeve, cooperates transmission power.
Background technique
At present, the spline dirivig member of machinery is made of splined shaft and cover, and drive unit drives splined shaft and rotates, axle by spline with transmission of power to outer shaft sleeve, the driven member that is fixed together with outer shaft sleeve moves with outer shaft sleeve.When the circumferential power of axle was big, the side of the key on the axle and the lateral force of the interior spline on the outer shaft sleeve were big, and moving resistance is big vertically to cause outer shaft sleeve, and serious wear has had influence on cooperating between axle and the outer shaft sleeve.Simultaneously, there is complex process in the processing of the processing of splined shaft and the interior spline of outer shaft sleeve, the defective that machining error is big.
Summary of the invention
A kind of ball spline mechanism provided by the invention, the key and the interior spline on the outer shaft sleeve that have solved on the splined shaft that prior art exists are subjected to lateral forces to cause wearing and tearing easily, and outer shaft sleeve moves axially the processing technology complicated processing error big technical problem of the interior spline of the processing of the big and splined shaft of resistance and outer shaft sleeve.
The present invention overcomes the above problems by following scheme:
A kind of ball spline mechanism, comprise axle, outer shaft sleeve that is combined together with axle key and the keyway that is provided with along the central axial direction of axle, described correspondence is arranged on the outer side surface of axle and the bottom surface of the keyway on the inner side surface of outer shaft sleeve is the circular arc bottom surface, keyway on the outer side surface of corresponding axle and the inner side surface of outer shaft sleeve is formed a cylindrical key groove, in this cylindrical key groove, be movably set with the steel ball that row's in-line is arranged, port activity in cylindrical key groove is provided with end cap, the steel ball that end cap is arranged in-line is enclosed in the keyway, on the outer side surface of axle and on the inner side surface of outer shaft sleeve a plurality of keyways is being set evenly respectively.
On the outer side surface of axle and the keyway that evenly is provided with on the inner side surface of outer shaft sleeve be 3-6.
The axial length of the keyway that is provided with on the inner side surface of axial length than outer shaft sleeve of the keyway that is provided with on the outer side surface of axle is long.
The present invention is simple in structure, spline machining accuracy height, and the key wiping power between splined shaft and the cover is little, easy to maintenance.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 be among Fig. 1 A-A to sectional view
Embodiment
A kind of ball spline mechanism, comprise axle 4, outer shaft sleeve 3 that is combined together with axle 4 keys and the keyway that is provided with along the central axial direction of axle 4, the bottom surface that described correspondence is arranged on the keyway on the inner side surface of axle 4 outer side surface and outer shaft sleeve 3 is the circular arc bottom surface, keyway on the outer side surface of corresponding axle 4 and the inner side surface of outer shaft sleeve 3 is formed a cylindrical key groove, in this cylindrical key groove, be movably set with the steel ball 2 that row's in-line is arranged, port activity in cylindrical key groove is provided with end cap 1, the steel ball 2 that end cap 1 is arranged in-line is enclosed in the keyway, on the outer side surface of axle 4 and on the inner side surface of outer shaft sleeve 3 a plurality of keyways is being set evenly respectively.
On the outer side surface of axle 4 and the keyway that evenly is provided with on the inner side surface of outer shaft sleeve 3 be 3-6.
The axial length of the keyway that is provided with on the inner side surface of axial length than outer shaft sleeve 3 of the keyway that is provided with on the outer side surface of axle 4 is long.
The present invention will endwisely slip to rub and become rolling friction, and shearing force is become positive pressure, improve the working life of spline.It is big particularly to have solved spline resistance when moving axially, and damages key and force transmission mechanism short technical problem in working life easily.
Claims (3)
1. ball spline mechanism, comprise axle (4), outer shaft sleeve (3) that is combined together with axle (4) key and the keyway that is provided with along the central axial direction of axle (4), it is characterized in that, the bottom surface that described correspondence is arranged on the keyway on the inner side surface of axle outer side surface of (4) and outer shaft sleeve (3) is the circular arc bottom surface, keyway on the outer side surface of corresponding axle (4) and the inner side surface of outer shaft sleeve (3) is formed a cylindrical key groove, in this cylindrical key groove, be movably set with the steel ball (2) that row's in-line is arranged, port activity in cylindrical key groove is provided with end cap (1), the steel ball (2) that end cap (1) is arranged in-line is enclosed in the keyway, and a plurality of keyways evenly are being set respectively on the outer side surface of axle (4) and on the inner side surface of outer shaft sleeve (3).
2. a kind of ball spline mechanism according to claim 1 is characterized in that, is 3-6 at the keyway that evenly is provided with on the outer side surface of axle (4) and on the inner side surface of outer shaft sleeve (3).
3. a kind of ball spline mechanism according to claim 1 and 2 is characterized in that, the axial length of the keyway that is provided with on the inner side surface of axial length than outer shaft sleeve (3) of the keyway that is provided with on the outer side surface of axle (4) is long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202117267U CN201705824U (en) | 2010-05-27 | 2010-05-27 | Ball spline mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202117267U CN201705824U (en) | 2010-05-27 | 2010-05-27 | Ball spline mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705824U true CN201705824U (en) | 2011-01-12 |
Family
ID=43442980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202117267U Expired - Fee Related CN201705824U (en) | 2010-05-27 | 2010-05-27 | Ball spline mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832341A (en) * | 2010-05-27 | 2010-09-15 | 太原刚玉物流工程有限公司 | Ball spline mechanism |
-
2010
- 2010-05-27 CN CN2010202117267U patent/CN201705824U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832341A (en) * | 2010-05-27 | 2010-09-15 | 太原刚玉物流工程有限公司 | Ball spline mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20120527 |