CN201696571U - Ball-screw pair - Google Patents
Ball-screw pair Download PDFInfo
- Publication number
- CN201696571U CN201696571U CN2010202084545U CN201020208454U CN201696571U CN 201696571 U CN201696571 U CN 201696571U CN 2010202084545 U CN2010202084545 U CN 2010202084545U CN 201020208454 U CN201020208454 U CN 201020208454U CN 201696571 U CN201696571 U CN 201696571U
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- CN
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- Prior art keywords
- ball
- nut
- screw
- screw pair
- leading screw
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- Expired - Fee Related
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Abstract
The utility model discloses a ball-screw pair belonging to a screw pair, which aims at providing the ball-screw pair with simple structure, convenient processing and maintenance, and controllable trip position without stopping. The ball-screw pair comprises a screw of which the surface is provided with a spiral groove, a nut sleeved on the screw, and a ball arranged between the nut and the screw. A plurality of circle straight grooves (7) are arranged on the inner wall of the nut (4); a ball keeping sleeve (2) is sleeved between the nut (4) and the screw (1); at least two ball positioning holes (8) are arranged on the ball keeping sleeve corresponding to positions of the circle straight grooves (7); two step clamping openings (9) are respectively arranged at two end surfaces of the ball keeping sleeve (2); the ball (3) is arranged in each ball positioning hole (8); and both ends of the screw (1) are respectively fixed with a limiting pin (6). The ball-screw pair has advantages of simple and compact structure, small processing difficulty, low cost, convenient trip control and long service life, and is an ideal transmission mechanism.
Description
Technical field: the utility model relates to a kind of lead screw pair, relates in particular to a kind of ball screw pair.
Background technique: at present, known traditional ball screw pair constitutes by elements such as leading screw, nut, ball, reversers, and the thread form of leading screw and nut is spiral chute; Ball screws out along the spiral grooves of leading screw, nut and comes off in the rotary course, reverser (being that ball returns circulation canal) need be set usually, to guarantee that ball can return circulation in the effective spiral scope of nut on nut.Not only complex structure, volume are big for this traditional ball screw pair, relatively difficulty, cost are high for processing and maintenance; and because lead screw pair must rely on equipment downtime to control stroke (utilizing two position limit switches of peripheral hardware to realize shutting down); position limit switch is in a single day malfunctioning; nut just might exceed stroke and cause the accident, and safety reliability is relatively poor.
Summary of the invention: in order to overcome the deficiencies in the prior art, the utility model aims to provide a kind of simple in structure, easy to process and to need not to shut down be the ball screw pair of may command travel position.
To achieve these goals, the utility model is by the following technical solutions: it comprise the surface be provided with the spiral fluted leading screw, be enclosed within on this leading screw and inwall be provided with groove nut, be located at the plurality of balls between this nut and the described leading screw; The described groove that is located at nut inner wall is some annulus straight troughs, be with the ball maintainance set between nut and the leading screw, position corresponding to each annulus straight trough on this ball maintainance set is provided with two ball positioning holes at least, and the both ends of the surface of ball maintainance set respectively are provided with the step bayonet socket of two inclinations; The ball that is located in each ball positioning hole falls into annulus straight trough and spiral chute, respectively is fixed with a position limit pin at the two ends of leading screw.
Each adjacent ball positioning hole is staggered and evenly distribution along the circumferencial direction of ball maintainance set.
Compared with the prior art, the utility model has been owing to adopted technique scheme, the spiral chute on the nut changed into some annulus straight troughs on the basis of conventional construction, and increased a ball maintainance set; Therefore reverser needn't be set guarantee that ball can not deviate from; the difficulty of processing and the manufacture cost of nut have not only been reduced; and needn't to shut down be the movement travel of may command nut, thereby improved the working efficiency of equipment, alleviated the infringement that equipment causes because of frequent starting.In addition, owing to omitted position limit switch, thereby also simplified the control circuit of equipment, further reduced the cost of equipment.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of ball maintainance set of the present utility model;
Fig. 3 is the A-A sectional view during Fig. 2 is;
Fig. 4 is the perspective view of ball maintainance set of the present utility model;
Fig. 5 is the structural representation of nut of the present utility model.
Among the figure: leading screw 1 ball maintainance set 2 balls 3 nuts 4 spiral chutes 5 position limit pins 6 annulus straight troughs 7 ball positioning holes 8 step bayonet sockets 9
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
In Fig. 1～5, the nut 4 that inwall is provided with some annulus straight troughs 7 is enclosed within the surface and is provided with on the leading screw 1 of spiral chute 5, and ball maintainance set 2 is enclosed between this leading screw and the nut 4, and stretch out from nut 4 two ends at the two ends of this ball maintainance set; Position corresponding to each annulus straight trough 7 on the ball maintainance set 2 is provided with two ball positioning holes 8, is provided with ball 3 in each ball positioning hole 8, and this ball just in time falls into annulus straight trough 7 and spiral chute 5.The both ends of the surface of ball maintainance set 2 respectively are provided with the step bayonet socket 9 of two inclinations, and the two ends of leading screw 1 respectively are fixed with a position limit pin 6.Stressed evenly in order to guarantee nut 4, each adjacent ball positioning hole 8 evenly distributes and is staggered along axial direction along the circumferencial direction of ball maintainance set 2.
Working principle: during leading screw 1 rotation, do axial motion by annulus straight trough 7 drive nuts 4 along the ball 3 that spiral chute 5 moves; When nut 4 moved to the position of position limit pin 6, the step bayonet socket 9 of ball maintainance set 2 snapped in position limit pin 6 and rotates synchronously with leading screw 1; Because the restriction of ball maintainance set 2,3 on ball is made spinning motion is not at this moment then had axial motion with respect to leading screw 1, so nut 4 does not have axial motion at this moment yet.When leading screw 1 counterrotating, step bayonet socket 9 breaks away from position limit pin 6, and ball 3 is done reverse axial motion along spiral chute 5 reversing motions thereby drive nut 4.
Claims (2)
1. ball screw pair, comprise the surface be provided with the spiral fluted leading screw, be enclosed within on this leading screw and inwall be provided with groove nut, be located at the plurality of balls between this nut and the described leading screw; It is characterized in that: the described groove that is located at nut (4) inwall is some annulus straight troughs (7), be with ball maintainance set (2) between nut (4) and the leading screw (1), position corresponding to each annulus straight trough (7) on this ball maintainance set is provided with two ball positioning holes (8) at least, and the both ends of the surface of ball maintainance set (2) respectively are provided with the step bayonet socket (9) of two inclinations; The ball (3) that is located in each ball positioning hole (8) falls into annulus straight trough (7) and spiral chute (5), respectively is fixed with a position limit pin (6) at the two ends of leading screw (1).
2. ball screw pair according to claim 1 is characterized in that: each adjacent ball positioning hole (8) is staggered and evenly distribution along the circumferencial direction of ball maintainance set (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202084545U CN201696571U (en) | 2010-05-31 | 2010-05-31 | Ball-screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202084545U CN201696571U (en) | 2010-05-31 | 2010-05-31 | Ball-screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696571U true CN201696571U (en) | 2011-01-05 |
Family
ID=43397814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202084545U Expired - Fee Related CN201696571U (en) | 2010-05-31 | 2010-05-31 | Ball-screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697131A (en) * | 2014-01-03 | 2014-04-02 | 李国锋 | Ball screw |
| CN104121343A (en) * | 2014-08-14 | 2014-10-29 | 瀚寅(苏州)新材料科技有限公司 | Ball screw transmission device with fixed length limiting function |
-
2010
- 2010-05-31 CN CN2010202084545U patent/CN201696571U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697131A (en) * | 2014-01-03 | 2014-04-02 | 李国锋 | Ball screw |
| CN103697131B (en) * | 2014-01-03 | 2016-03-02 | 李国锋 | A kind of ball screw |
| CN104121343A (en) * | 2014-08-14 | 2014-10-29 | 瀚寅(苏州)新材料科技有限公司 | Ball screw transmission device with fixed length limiting function |
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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: 20110105 Termination date: 20140531 |