CN218598749U - Ball nut capable of automatically eliminating clearance of ball screw pair - Google Patents
Ball nut capable of automatically eliminating clearance of ball screw pair Download PDFInfo
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- CN218598749U CN218598749U CN202222979244.1U CN202222979244U CN218598749U CN 218598749 U CN218598749 U CN 218598749U CN 202222979244 U CN202222979244 U CN 202222979244U CN 218598749 U CN218598749 U CN 218598749U
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- packing ring
- clearance
- ball screw
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Abstract
The utility model relates to an automatic eliminate ball nut in vice clearance of ball, including the nut body, the nut body includes mounting flange, first nut, second nut and is used for connecting the coupling assembling of first nut and second nut, still is provided with the packing ring between first nut and the second nut, is provided with clearance elimination subassembly on the packing ring, the utility model discloses a set up regulating spring, regulating spring is the compression state when packing into in the recess, and its both ends have the packing force to first nut and packing ring respectively, and after ball nut is using for a long time, the steel ball all can produce certain wearing and tearing back with the raceway to cause the pretightning force to reduce, the packing ring is not hard up, can't play the pretension effect, and the vice precision variation of ball, regulating spring can be on the packing ring through the spring force effect this moment, thereby the packing ring that makes can press the ball with certain pressure all the ball all the time, avoids not hard up of packing ring, in order to reach the mesh of eliminating axial clearance and pretension.
Description
Technical Field
The utility model belongs to the technical field of ball, a ball nut in vice clearance of automatic elimination ball is related to.
Background
The ball screw pair is a most main transmission mechanism in modern mechanical equipment, and the performance of the ball screw pair directly influences the movement precision of a moving part of the mechanical equipment. The existing pre-tightening type ball screw nut is generally in a double-nut structure, wherein most of the pre-tightening type ball screw nuts adopt a washer pre-tightening mode and then are connected through a flat key, so that pre-tightening between a nut and a screw of a ball screw pair is realized.
However, after long-time use, the steel ball and the raceway are easily abraded, and after abrasion, a gap is generated between the ball screw and the raceway, so that the pretightening force is reduced, the washer is loosened, and the pretightening effect cannot be achieved, so that the use precision of the ball nut is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems in the prior art, and provides a ball nut capable of automatically eliminating the clearance of a ball screw pair.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides an automatic eliminate ball nut in ball screw clearance, includes the nut body, the nut body include mounting flange, first nut, second nut and be used for connecting the coupling assembling of first nut and second nut, first nut and second nut between still be provided with the packing ring, the packing ring on be provided with the clearance and eliminate the subassembly, the clearance eliminate the subassembly including seting up the recess in packing ring one side, the recess in be provided with adjusting spring.
In the ball nut for automatically eliminating the gap of the ball screw pair, the connecting assembly comprises a connecting piece arranged between the first nut and the second nut, and two ends of the connecting piece are fixedly arranged on the first nut and the second nut through bolts respectively. The connecting piece is a flat key and connects the first nut and the second nut with each other.
In the ball nut for automatically eliminating the gap of the ball screw assembly, the gap eliminating assemblies are provided in plurality and annularly distributed on the gasket.
In the ball nut for automatically eliminating the gap of the ball screw pair, the first nut, the washer and the second nut are provided with the spacing grooves for accommodating the connecting piece.
In the ball nut for automatically eliminating the clearance of the ball screw pair, the adjusting spring is arranged at one side close to the mounting flange.
In the ball nut for automatically eliminating the clearance of the ball screw pair, the inner cavity of the nut body is provided with a ball channel.
Compared with the prior art, the utility model discloses a set up regulating spring, regulating spring is the compression state when packing into in the recess, its both ends have the packing force to first nut and packing ring respectively, after ball nut is used for a long time, the steel ball all can produce certain wearing and tearing with the raceway after, thereby cause the pretightning force to reduce, the packing ring is not hard up, can't play the pretensioning effect, the vice precision variation of ball screw, regulating spring can be on the packing ring through the elastic force effect this moment, thereby make the packing ring can press to ball nut with certain pressure all the time, avoid the not hard up of packing ring, in order to reach the purpose of eliminating axial clearance and pretensioning; meanwhile, the elasticity of the adjusting spring acts on the gasket in real time, so that the effect of automatically eliminating the gap is achieved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an explosion diagram of the present invention.
In the figure, 1, a nut body; 11. installing a flange; 12. a first nut; 13. a second nut; 14. a connecting assembly; 141. a connecting member; 2. a gasket; 3. a gap eliminating assembly; 31. a groove; 32. adjusting the spring; 4. a ball passage; 5. and (4) an intermediate groove.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Examples
As shown in fig. 1 and 2, the ball nut for automatically eliminating the clearance of the ball screw pair comprises a nut body 1, wherein a ball passage 4 is arranged in an inner cavity of the nut body 1.
The clearance elimination assembly 3 comprises a groove 31 formed in one side of the gasket 2, an adjusting spring 32 is arranged in the groove 31, and the adjusting spring 32 is arranged on one side close to the mounting flange 11.
The connecting assembly 14 includes a connecting member 141 disposed between the first nut 12 and the second nut 13, and two ends of the connecting member 141 are respectively and fixedly mounted on the first nut 12 and the second nut 13 through bolts. The coupling member 141 is a flat key capable of coupling the first nut 12 and the second nut 13 to each other.
The first nut 12, the washer 2 and the second nut 13 are provided with spacing grooves 5 for accommodating the connecting piece 141.
The utility model discloses a set up regulating spring 32, regulating spring 32 is the compression state when packing into in recess 31, and its both ends have the packing force to first nut 12 and packing ring 2 respectively, and after ball nut used for a long time, after steel ball and raceway all can produce certain wearing and tearing, regulating spring 32 can be through the elasticity effect on packing ring 2 to make packing ring 2 can press ball nut with certain pressure all the time and avoid the not hard up of packing ring 2, in order to reach the mesh of eliminating axial clearance and pretension; meanwhile, the elasticity of the adjusting spring 32 acts on the gasket 2 in real time, so that the effect of automatically eliminating the gap is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides an automatic eliminate ball nut in vice clearance of ball, includes nut body (1), its characterized in that, nut body (1) including mounting flange (11), first nut (12), second nut (13) and be used for connecting coupling assembling (14) of first nut (12) and second nut (13), first nut (12) and second nut (13) between still be provided with packing ring (2), packing ring (2) on be provided with clearance elimination subassembly (3), clearance elimination subassembly (3) including seting up recess (31) in packing ring (2) one side, recess (31) in be provided with regulating spring (32).
2. The ball nut of claim 1, wherein the ball screw assembly is configured to automatically remove play therebetween: coupling assembling (14) including setting up connecting piece (141) between first nut (12) and second nut (13), the both ends of connecting piece (141) pass through bolt fixed mounting respectively on first nut (12) and second nut (13).
3. The ball nut for automatically eliminating the clearance of the ball screw pair as claimed in claim 2, wherein the clearance eliminating assembly (3) is provided in plurality and distributed on the washer (2) in a ring shape.
4. The ball nut capable of automatically eliminating the clearance of the ball screw pair as claimed in claim 3, wherein the first nut (12), the washer (2) and the second nut (13) are provided with spacing grooves (5) for accommodating the connecting pieces (141).
5. The ball nut of claim 4, wherein the ball screw assembly is configured to automatically remove play therebetween: the adjusting spring (32) is arranged on one side close to the mounting flange (11).
6. The ball nut of claim 5, wherein the ball screw assembly is configured to automatically remove play therebetween, the ball nut comprising: the inner cavity of the nut body (1) is provided with a ball passage (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979244.1U CN218598749U (en) | 2022-11-09 | 2022-11-09 | Ball nut capable of automatically eliminating clearance of ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979244.1U CN218598749U (en) | 2022-11-09 | 2022-11-09 | Ball nut capable of automatically eliminating clearance of ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218598749U true CN218598749U (en) | 2023-03-10 |
Family
ID=85407456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222979244.1U Active CN218598749U (en) | 2022-11-09 | 2022-11-09 | Ball nut capable of automatically eliminating clearance of ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218598749U (en) |
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2022
- 2022-11-09 CN CN202222979244.1U patent/CN218598749U/en active Active
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