CN102996739A - Flexible lead screw pre-tightening device - Google Patents
Flexible lead screw pre-tightening device Download PDFInfo
- Publication number
- CN102996739A CN102996739A CN2011102726349A CN201110272634A CN102996739A CN 102996739 A CN102996739 A CN 102996739A CN 2011102726349 A CN2011102726349 A CN 2011102726349A CN 201110272634 A CN201110272634 A CN 201110272634A CN 102996739 A CN102996739 A CN 102996739A
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- screw
- spring
- nut
- lead screw
- bearing
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Abstract
The invention discloses a flexible lead screw pre-tightening device for being connected at the end part of a lead screw and applying pretightening force on the lead screw. The flexible lead screw pre-tightening device comprises a flat key, a support, a nut, a screw, a spring limiting sleeve, a gasket and a spring, wherein the support is connected with a lead screw sleeve by the flat key in a sheathing manner; the support and the lead screw can do axial and relative movement instead of radial and relative rotation; the nut is in threaded connection with the lead screw by an external thread; the screw is in threaded connection with the nut; the spring limiting sleeve is fixedly arranged on the support and is movably connected with the screw in a penetrating manner; the gasket and the spring are sheathed on the screw in sequence; the gasket is arranged between the spring and a screw cap of the screw; and one end of the spring abuts against the gasket, and the other end of the spring abuts against the spring limiting sleeve. Compared with the rigid lead screw pre-tightening device in the prior art, the flexible lead screw pre-tightening device has the characteristics of simple structure and convenient in adjustment, the flexibility of the spring is achieved and the damage to the lead screw can be avoided.
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 characteristics such as the feed screw nut auxiliary driving has the Location accuracy height, 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 produces larger distortion easily, affects transmission accuracy and the transmission speed of machinery; Simultaneously, also can reduce the working life of screw pair.
In order to reduce the leading screw amount of deflection, increase transmission accuracy and efficient, need to load pretightening force to leading screw, carry out the pretension 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
Purpose of the present invention just is to address the above problem, and provides a kind of and reduces the leading screw amount of deflection, guarantees transmission accuracy and transmission speed and prolong the leading screw flexible lead screw pre-tightening device in working life.
The object of the present invention is achieved like this: a kind of flexible lead screw pre-tightening device, apply pretightening force for the end that is connected to leading screw to leading screw, comprise flat key, bearing, nut, screw, spring stop collar, pad and spring, bearing links to each other by the socket of flat key and leading screw, can do between bearing and the leading screw axial relatively move but can not do relatively rotating radially; Nut is connected with threads of lead screw by its outside thread, screw is connected with nut thread, the spring stop collar is fixedly mounted on the bearing and wears with the screw activity and links to each other, pad and spring sequentially are sleeved on the screw, pad wherein is arranged between the nut of spring and screw, one end low pressure of spring is on pad, and the other end low pressure is on the spring stop collar; Screw screw and can make spring produce resiliently deformable, the elastic force of spring reacts on the 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 the reducing nut, comprises bigger diameter end and miner diameter end, and 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 the reducing endoporus, comprises hole, large footpath and diameter holes, step in forming between large hole, footpath and the diameter holes; Described leading screw and nut are connected in the diameter holes, and leave the gap between nut and the bearing; Described spring stop collar is arranged in the hole, large footpath and also and between the bearing leaves the gap, and the interior step of the inner of spring stop collar and bearing is fixedly linked.
The outer end of described spring stop collar is provided with a groove that is used for putting spring, and the other end of described spring is inlaid in the interior low pressure of this groove on the spring stop collar; The inner of spring stop collar is provided with one greater than the groove of nut external diameter, and described nut can axially relatively move along this groove.
The present invention compares with the rigidity screw mandrel pre-tightening apparatus of prior art, has characteristics simple in structure, easy to adjust, and has the flexibility of spring concurrently, can not produce damage to leading screw.
Description of drawings
Fig. 1 is the structural representation of flexible lead screw pre-tightening device of the present invention.
Embodiment
Referring to Fig. 1, flexible lead screw pre-tightening device of the present invention, apply pretightening force for the end that is connected to leading screw 1 to leading screw, comprise flat key 2, bearing 3, nut 4, screw 5, spring stop collar 6, pad 7 and spring 8, bearing 3 links to each other with leading screw 1 socket by flat key 2, can do between bearing 3 and the leading screw 1 axial relatively move but can not do relatively rotating radially; Nut 4 is threaded with leading screw 1 by its outside thread, screw 5 is threaded with nut 4, spring stop collar 6 is fixedly mounted on the bearing 3 and wears with screw 5 activities and links to each other, pad 7 and spring 8 orders are sleeved on the screw 5, pad 7 wherein is arranged between the nut of spring 8 and screw, one end low pressure of spring 8 is on pad 7, and the other end low pressure is on spring stop collar 6; Screw screw 5 and can make spring 8 produce resiliently deformable, the elastic force of spring reacts on the screw, and screw applies pulling force by 4 pairs of leading screws 1 of nut, realizes the flexible pretension to leading screw.
The end of the leading screw 1 among the present invention is provided with an axial interior threaded hole; Nut 4 is the reducing nut, comprises bigger diameter end and miner diameter end, and 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 among the present invention is provided with the reducing endoporus, comprises hole, large footpath and diameter holes, step in forming between large hole, footpath and the diameter holes; Leading screw 1 and nut 4 are connected in the diameter holes, and leave gap 31 between nut 4 and the bearing 3; Spring stop collar 6 be arranged in the hole, large footpath and and bearing 3 between leave gap 32, the interior step of the inner of spring stop collar 6 and bearing 1 is fixedly linked.
The outer end of the spring stop collar 6 among the present invention is provided with a groove 61 that is used for putting spring, and the other end of spring 8 is inlaid in these groove 61 interior low pressure on the spring stop collar; The inner of spring stop collar 6 is provided with one greater than the groove 62 of nut 4 external diameters, and nut 4 can axially relatively move 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 the nut 4, the pressurized resiliently deformable that spring 8 is produced in various degree, and spring force acts on the screw 5, and screw 5 applies pulling force by 8 pairs of leading screws 1 of nut.Rotary screw 5 can be regulated the size of pretightening force easily, and spring 8 has guaranteed that pretightening force has flexibility.
Claims (4)
1. flexible lead screw pre-tightening device, apply pretightening force for the end that is connected to leading screw to leading screw, it is characterized in that: comprise flat key, bearing, nut, screw, spring stop collar, pad and spring, bearing links to each other by the socket of flat key and leading screw, can do between bearing and the leading screw axial relatively move but can not do relatively rotating radially; Nut is connected with threads of lead screw by its outside thread, screw is connected with nut thread, the spring stop collar is fixedly mounted on the bearing and wears with the screw activity and links to each other, pad and spring sequentially are sleeved on the screw, pad wherein is arranged between the nut of spring and screw, one end low pressure of spring is on pad, and the other end low pressure is on the spring stop collar; Screw screw and can make spring produce resiliently deformable, the elastic force of spring reacts on the 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, it is characterized in that: the end of described leading screw is provided with an axial interior threaded hole; Described nut is the reducing nut, comprises bigger diameter end and miner diameter end, and 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, it is characterized in that: described bearing is provided with the reducing endoporus, comprises hole, large footpath and diameter holes, step in forming between large hole, footpath and the diameter holes; Described leading screw and nut are connected in the diameter holes, and leave the gap between nut and the bearing; Described spring stop collar is arranged in the hole, large footpath and also and between the bearing leaves the gap, and the interior step of the inner of spring stop collar and bearing is fixedly linked.
4. flexible lead screw pre-tightening device according to claim 1 is characterized in that: the outer end of described spring stop collar is provided with a groove that is used for putting spring, and the other end of described spring is inlaid in this groove low pressure on the spring stop collar; The inner of spring stop collar is provided with one greater than the groove of nut external diameter, and described nut can axially relatively move 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 true CN102996739A (en) | 2013-03-27 |
| CN102996739B CN102996739B (en) | 2015-07-29 |
Family
ID=47925695
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) |
Cited By (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 |
| CN115341414A (en) * | 2022-08-24 | 2022-11-15 | 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
Patent Citations (11)
| 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)
| Title |
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| 张广顺: "滚珠丝杠副预紧结构", 《机械制造》 * |
| 张燕: "滚珠丝杠预紧在装配的应用", 《机械工业标准化与质量》 * |
Cited By (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 |
| CN115341414A (en) * | 2022-08-24 | 2022-11-15 | 广东华工环源环保科技有限公司 | Connection structure used in temperature change occasion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102996739B (en) | 2015-07-29 |
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