CN102996739B - Flexible lead screw pre-tightening device - Google Patents
Flexible lead screw pre-tightening device Download PDFInfo
- Publication number
- CN102996739B CN102996739B CN201110272634.9A CN201110272634A CN102996739B CN 102996739 B CN102996739 B CN 102996739B CN 201110272634 A CN201110272634 A CN 201110272634A CN 102996739 B CN102996739 B CN 102996739B
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- screw
- nut
- spring
- bearing
- leading screw
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Abstract
A kind of flexible lead screw pre-tightening device, end for being connected to leading screw applies pretightening force to leading screw, comprise flat key, bearing, nut, screw, spring retainer cover, pad and spring, bearing to be socketed with leading screw by flat key and to be connected, and can do axial relative movement but can not do radial relatively rotating between bearing and leading screw; Nut is connected with threads of lead screw by its outside thread, screw is connected with nut thread, spring retainer cover is fixedly mounted on to wear on bearing and with screw activity and is connected, pad and spring order are sleeved on screw, pad is wherein arranged between spring and the nut of screw, one end of spring is pressed on pad, and the other end is pressed on spring retainer and puts.The present invention, compared with the rigidity screw mandrel pre-tightening apparatus of prior art, has structure simple, feature easy to adjust, and the flexibility having spring concurrently, can not produce damage to leading screw.
Description
Technical field
The present invention relates to a kind of machinery, particularly a kind of flexible lead screw pre-tightening device.
Background technique
The features such as it is high that feed screw nut auxiliary driving has positioning precision, and transmission speed is fast, have been widely used in lathe, textile manufacturing machine etc. and have required in the machinery of highi degree of accuracy or high efficiency transmission.But in the heavy duty situation of long-range, leading screw easily produces larger distortion, affect transmission accuracy and the transmission speed of machinery; Meanwhile, also can reduce the working life of screw pair.
In order to reduce leading screw amount of deflection, increasing transmission accuracy and efficiency, needing to load pretightening force to leading screw, carrying out pretensioning operation.The pretightening force of the screw mandrel pre-tightening apparatus of conventional rigid is fixed value, pretightening force size adjustment difficulty.
Summary of the invention
Object of the present invention, is just to solve the problem, and provides a kind of and reduces leading screw amount of deflection, guarantee transmission accuracy and transmission speed and the flexible lead screw pre-tightening device extending leading screw working life.
The object of the present invention is achieved like this: a kind of flexible lead screw pre-tightening device, end for being connected to leading screw applies pretightening force to leading screw, comprise flat key, bearing, nut, screw, spring retainer cover, pad and spring, bearing to be socketed with leading screw by flat key and to be connected, and can do axial relative movement but can not do radial relatively rotating between bearing and leading screw; Nut is connected with threads of lead screw by its outside thread, screw is connected with nut thread, spring retainer cover is fixedly mounted on to wear on bearing and with screw activity and is connected, pad and spring order are sleeved on screw, pad is wherein arranged between spring and the nut of screw, one end of spring is pressed on pad, and the other end is pressed on spring retainer and puts; Tightening screw can make spring produce resiliently deformable, and the elastic force of spring reacts on screw, and screw applies pulling force by nut to leading screw, realizes the flexible pretension to leading screw.
The end of described leading screw is provided with an axial interior threaded hole; Described nut is reducing nut, and comprise bigger diameter end and miner diameter end, miner diameter end is provided with outside thread, and the miner diameter end of nut is threaded with the interior threaded hole of leading screw by its outside thread, and the bigger diameter end of nut is pressed on the end face of leading screw.
Described bearing is provided with reducing endoporus, comprises hole, large footpath and diameter holes, step in being formed between hole, large footpath and diameter holes; Described leading screw and nut are connected in diameter holes, and leave gap between nut and bearing; Described spring retainer is set in hole, large footpath and also and between bearing leaves gap, and the inner of spring retainer cover and the interior step of bearing are fixedly linked.
The outer end of described spring retainer cover is provided with a groove for putting spring, and the other end of described spring is inlaid in and is pressed on spring retainer in this groove and puts; The inner of spring retainer cover is provided with the groove that is greater than nut external diameter, and described nut can do axial relative movement along this groove.
The present invention, compared with the rigidity screw mandrel pre-tightening apparatus of prior art, has structure simple, feature easy to adjust, and the flexibility having spring concurrently, can not produce damage to leading screw.
Accompanying drawing explanation
Fig. 1 is the structural representation of flexible lead screw pre-tightening device of the present invention.
Embodiment
See Fig. 1, flexible lead screw pre-tightening device of the present invention, end for being connected to leading screw 1 applies pretightening force to leading screw, comprise flat key 2, bearing 3, nut 4, screw 5, spring retainer cover 6, pad 7 and spring 8, bearing 3 is socketed with leading screw 1 by flat key 2 and is connected, and can do axial relative movement but can not do radial relatively rotating between bearing 3 and leading screw 1; Nut 4 is threaded with leading screw 1 by its outside thread, screw 5 is threaded with nut 4, spring retainer cover 6 is fixedly mounted on to wear on bearing 3 and with screw 5 activity and is connected, pad 7 and spring 8 order are sleeved on screw 5, pad 7 is wherein arranged between spring 8 and the nut of screw, one end of spring 8 is pressed on pad 7, and the other end is pressed on spring retainer cover 6; Tightening screw 5 can make spring 8 produce resiliently deformable, and the elastic force of spring reacts on screw, and screw applies pulling force by nut 4 pairs of leading screws 1, realizes the flexible pretension to leading screw.
The end of the leading screw 1 in the present invention is provided with an axial interior threaded hole; Nut 4 is reducing nut, and comprise bigger diameter end and miner diameter end, miner diameter end is provided with outside thread, and the miner diameter end of nut is threaded with the interior threaded hole of leading screw by its outside thread, and the bigger diameter end of nut is pressed on the end face of leading screw.
Bearing 3 in the present invention is provided with reducing endoporus, comprises hole, large footpath and diameter holes, step in being formed between hole, large footpath and diameter holes; Leading screw 1 and nut 4 are connected in diameter holes, and leave gap 31 between nut 4 and bearing 3; Spring retainer cover 6 is arranged in hole, large footpath and also and between bearing 3 leaves gap 32, and spring retainer cover the inner of 6 and the interior step of bearing 1 are fixedly linked.
The outer end of the spring retainer cover 6 in the present invention is provided with a groove 61 for putting spring, and the other end of spring 8 is inlaid in and is pressed on spring retainer in this groove 61 and puts; The inner of spring retainer cover 6 is provided with the groove 62 that is greater than nut 4 external diameter, and nut 4 can do axial relative movement along this groove 62.
Working principle of the present invention is, rotary screw 5 can change the length of thread engagement between screw 5 and nut 4, and make spring 8 produce pressurized resiliently deformable in various degree, spring force acts on screw 5, and screw 5 applies pulling force by nut 4 pairs of leading screws 1.Rotary screw 5 can regulate the size of pretightening force easily, and spring 8 ensure that pretightening force has flexibility.
Claims (4)
1. a flexible lead screw pre-tightening device, end for being connected to leading screw applies pretightening force to leading screw, it is characterized in that: comprise flat key, bearing, nut, screw, spring retainer cover, pad and spring, bearing to be socketed with leading screw by flat key and to be connected, and can do axial relative movement but can not do radial relatively rotating between bearing and leading screw; Nut is connected with threads of lead screw by its outside thread, screw is connected with nut thread, spring retainer cover is fixedly mounted on to wear on bearing and with screw activity and is connected, pad and spring order are sleeved on screw, pad is wherein arranged between spring and the nut of screw, the first end of spring is pressed on pad, and the second end is pressed on spring retainer and puts; Tightening screw can make spring produce resiliently deformable, and the elastic force of spring reacts on screw, and screw applies pulling force by nut to leading screw, realizes the flexible pretension to leading screw.
2. flexible lead screw pre-tightening device according to claim 1, is characterized in that: the end of described leading screw is provided with an axial interior threaded hole; Described nut is reducing nut, and comprise bigger diameter end and miner diameter end, miner diameter end is provided with outside thread, and the miner diameter end of nut is threaded with the interior threaded hole of leading screw by its outside thread, and the bigger diameter end of nut is pressed on the end face of leading screw.
3. flexible lead screw pre-tightening device according to claim 1, is characterized in that: described bearing is provided with reducing endoporus, comprises hole, large footpath and diameter holes, step in being formed between hole, large footpath and diameter holes; Described leading screw and nut are connected in diameter holes, and leave gap between nut and bearing; Described spring retainer is set in hole, large footpath and also and between bearing leaves gap, and the inner of spring retainer cover and the interior step of bearing are fixedly linked.
4. flexible lead screw pre-tightening device according to claim 1, is characterized in that: the outer end of described spring retainer cover is provided with a groove for putting spring, and the second end of described spring is inlaid in and is pressed on spring retainer in this groove and puts; The inner of spring retainer cover is provided with the groove that is greater than nut external diameter, and described nut can do axial relative movement along this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272634.9A CN102996739B (en) | 2011-09-15 | 2011-09-15 | Flexible lead screw pre-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272634.9A CN102996739B (en) | 2011-09-15 | 2011-09-15 | Flexible lead screw pre-tightening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996739A CN102996739A (en) | 2013-03-27 |
| CN102996739B true CN102996739B (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110272634.9A Expired - Fee Related CN102996739B (en) | 2011-09-15 | 2011-09-15 | Flexible lead screw pre-tightening device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102996739B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300518A (en) * | 2018-04-03 | 2018-07-20 | 山西阳煤化工机械（集团）有限公司 | Gasification furnace fin panel casing series internals support device |
| CN115341414B (en) * | 2022-08-24 | 2023-05-12 | 广东华工环源环保科技有限公司 | Connection structure used in temperature change occasion |
Citations (11)
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| GB2209576B (en) * | 1987-09-08 | 1992-03-25 | Ntn Toyo Bearing Co Ltd | Auto-tensioner for belt |
| DE19615335C1 (en) * | 1996-04-18 | 1997-10-02 | Gressel Ag | Clamping device with mechanical power amplifier |
| JP3559096B2 (en) * | 1994-05-31 | 2004-08-25 | リナック エー／エス | Linear actuator |
| CN2788961Y (en) * | 2004-06-11 | 2006-06-21 | 上海团结百超数控激光设备有限公司 | Lead screw pretightening apparatus |
| CN2936712Y (en) * | 2006-08-15 | 2007-08-22 | 山东新华医疗器械股份有限公司 | Aluminum foil feeding persistently tensioner |
| CN201031936Y (en) * | 2006-07-20 | 2008-03-05 | 中国科学院长春光学精密机械与物理研究所 | Helical transmission gap-eliminating mechanism |
| CN101251178A (en) * | 2008-03-24 | 2008-08-27 | 上海第二工业大学 | Apparatus for extinguishing crack and closing beforehand of lead screw of transmission mechanism |
| CN201615195U (en) * | 2009-07-07 | 2010-10-27 | 启东润泽机床附件有限公司 | Pre-tightening ball-screw pair of lock cap |
| CN102085622A (en) * | 2009-12-08 | 2011-06-08 | 德阳嘉龙机械制造有限公司 | Supporting fixed structure for ball screw of numerical control floor boring and milling machine |
| CN202266650U (en) * | 2011-09-15 | 2012-06-06 | 上海团结普瑞玛激光设备有限公司 | Flexible lead screw pre-tightening device |
| CN202510604U (en) * | 2012-03-21 | 2012-10-31 | 厦门嘉达环保建造工程有限公司 | Tension damping limiter |
-
2011
- 2011-09-15 CN CN201110272634.9A patent/CN102996739B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2209576B (en) * | 1987-09-08 | 1992-03-25 | Ntn Toyo Bearing Co Ltd | Auto-tensioner for belt |
| JP3559096B2 (en) * | 1994-05-31 | 2004-08-25 | リナック エー／エス | Linear actuator |
| DE19615335C1 (en) * | 1996-04-18 | 1997-10-02 | Gressel Ag | Clamping device with mechanical power amplifier |
| CN2788961Y (en) * | 2004-06-11 | 2006-06-21 | 上海团结百超数控激光设备有限公司 | Lead screw pretightening apparatus |
| CN201031936Y (en) * | 2006-07-20 | 2008-03-05 | 中国科学院长春光学精密机械与物理研究所 | Helical transmission gap-eliminating mechanism |
| CN2936712Y (en) * | 2006-08-15 | 2007-08-22 | 山东新华医疗器械股份有限公司 | Aluminum foil feeding persistently tensioner |
| CN101251178A (en) * | 2008-03-24 | 2008-08-27 | 上海第二工业大学 | Apparatus for extinguishing crack and closing beforehand of lead screw of transmission mechanism |
| CN201615195U (en) * | 2009-07-07 | 2010-10-27 | 启东润泽机床附件有限公司 | Pre-tightening ball-screw pair of lock cap |
| CN102085622A (en) * | 2009-12-08 | 2011-06-08 | 德阳嘉龙机械制造有限公司 | Supporting fixed structure for ball screw of numerical control floor boring and milling machine |
| CN202266650U (en) * | 2011-09-15 | 2012-06-06 | 上海团结普瑞玛激光设备有限公司 | Flexible lead screw pre-tightening device |
| CN202510604U (en) * | 2012-03-21 | 2012-10-31 | 厦门嘉达环保建造工程有限公司 | Tension damping limiter |
Non-Patent Citations (2)
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| 滚珠丝杠副预紧结构;张广顺;《机械制造》;19910630(第6期);第15页 * |
| 滚珠丝杠预紧在装配的应用;张燕;《机械工业标准化与质量》;20080430(第4期);第38,42页 * |
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| Publication number | Publication date |
|---|---|
| CN102996739A (en) | 2013-03-27 |
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