CN2788961Y - Lead screw pretightening apparatus - Google Patents
Lead screw pretightening apparatus Download PDFInfo
- Publication number
- CN2788961Y CN2788961Y CN 200420023649 CN200420023649U CN2788961Y CN 2788961 Y CN2788961 Y CN 2788961Y CN 200420023649 CN200420023649 CN 200420023649 CN 200420023649 U CN200420023649 U CN 200420023649U CN 2788961 Y CN2788961 Y CN 2788961Y
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- China
- Prior art keywords
- pretightening
- lead screw
- bearing
- screw
- utility
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- Expired - Lifetime
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Abstract
The utility model provides a lead screw pretightening apparatus. A pretightening shaft sleeve is arranged on a bearing on one end of a lead screw and is sheathed on the bearing, and a pretightening nut is arranged on the pretightening shaft sleeve. The integral pretightening shaft sleeve can be moved along the axial direction of the lead screw by rotating the pretightening nut to apply pretightening force to the lead screw, so the utility model greatly reduces the flexibility of the lead screw, enhances the transmission accuracy and speed of a numerical control machine and extends the service life of the lead screw.
Description
Technical field
The utility model relates to a kind of pre-tightening apparatus of shaft-like part, particularly the leading screw pre-tightening apparatus of the precision of Digit Control Machine Tool transmission.
Background technology
Lead screw transmission has been widely used in the Digit Control Machine Tool, and still, the Digit Control Machine Tool of big stroke is because the silk that uses is longer, and leading screw is easy to generate bigger amount of deflection, influences the transmission accuracy and the transmission speed of lathe, and simultaneously, also can shorten greatly the service life of leading screw.
The utility model content
The purpose of this utility model is the leading screw pre-tightening apparatus that provides a kind of amount of deflection that can make leading screw to reduce greatly for the deficiency that solves above-mentioned technology.
In order to achieve the above object, leading screw pre-tightening apparatus provided by the utility model, it is characterized in that, on an end bearing of screw mandrel, be provided with a pretension axle sleeve, described pretension axle sleeve is enclosed within on the bearing, on described pretension axle sleeve, be provided with pre-load nut, rotate this pre-load nut preloaded bearing cover integral body is moved axially along leading screw, thereby screw mandrel is applied a pretightning force.
The utility model provides owing to can apply a pretightning force to screw mandrel, thereby makes the amount of deflection of screw mandrel that by a relatively large margin minimizing be arranged, and has improved the transmission accuracy and the transmission speed of Digit Control Machine Tool, has prolonged the service life of screw mandrel.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present utility model.
The specific embodiment
Below in conjunction with description of drawings enforcement of the present utility model is described in further detail.
Referring to Fig. 1, servomotor 1 is fixed on the motor cabinet 3, motor shaft is connected with an end of ball-screw 6 by elastic coupling 2, motor cabinet 3 is separately fixed on the contour plane of Digit Control Machine Tool lathe bed with bearing block 13, four row radial thrust bearings respectively are equipped with at ball-screw 6 two ends, on the one end fixed electrical machinery seat 3, and by bearing lock nut 5 locking bearing inner races, the outer ring is compressed by bearing gland 4.The other end that the ball-screw 6 of four row bearing is housed is fixed in the preloaded bearing cover 9, and by bearing lock nut 11 locking bearing inner races, the outer ring is compressed by bearing gland 10, preloaded bearing overlaps 9 integral installations on bearing block 13, and can carry out axial displacement along the hole of bearing block 13, screw pre-load nut 12, make preloaded bearing overlap 9 integral body and move axially (being moved to the left) along ball-screw 6, because ball-screw 6 has been applied in pretightning force, make the comparable natural bow of amount of deflection of ball-screw 6 reduce 2/3, screw pre-load nut 8 this moment again, and the backing-up screw on difference tightening pre-load nut 8 and the pre-load nut 12, like this, because the amount of deflection of ball-screw 6 is very little, this leading screw can run up, by the ball-screw nut 7 accurate load movements that drive.
Certainly; present embodiment is not limited to the utility model; to those of ordinary skill in the art; still can do multiple variation to present embodiment; therefore; every employing analog structure of the present utility model and similar variation thereof all should be listed the protection domain of protection domain claims of the present utility model in.
Claims (1)
1, a kind of leading screw pre-tightening apparatus is characterized in that, is provided with a pretension axle sleeve on an end bearing of screw mandrel, and described pretension axle sleeve is enclosed within on the bearing, is provided with pre-load nut on described pretension axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420023649 CN2788961Y (en) | 2004-06-11 | 2004-06-11 | Lead screw pretightening apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420023649 CN2788961Y (en) | 2004-06-11 | 2004-06-11 | Lead screw pretightening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2788961Y true CN2788961Y (en) | 2006-06-21 |
Family
ID=36789300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420023649 Expired - Lifetime CN2788961Y (en) | 2004-06-11 | 2004-06-11 | Lead screw pretightening apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2788961Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817153A (en) * | 2010-04-26 | 2010-09-01 | 济南二机床集团有限公司 | Ram type milling head feeding mechanism |
| CN101602172B (en) * | 2009-04-21 | 2011-01-19 | 上海克迈特精密机床有限公司 | Leading screw support structure and leading screw prestretching method adopting same |
| CN102139447A (en) * | 2011-03-23 | 2011-08-03 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102166720A (en) * | 2011-04-30 | 2011-08-31 | 山东威能数字机器有限公司 | Structural support of ball screw assembly |
| CN102825491A (en) * | 2012-07-15 | 2012-12-19 | 浙江陀曼精密机械有限公司 | Numerical control composite axis non-circular section machining mechanism |
| CN102996739A (en) * | 2011-09-15 | 2013-03-27 | 上海团结普瑞玛激光设备有限公司 | Flexible lead screw pre-tightening device |
| CN103008773A (en) * | 2012-12-10 | 2013-04-03 | 天水锻压机床(集团)有限公司 | Nut rotating ball screw pair transmission unit |
| CN104690590A (en) * | 2015-01-29 | 2015-06-10 | 山东鲁南机床有限公司 | Differential reversible variable speed transmission mechanism |
| CN106181526A (en) * | 2016-07-25 | 2016-12-07 | 迪百仕电机科技（苏州）有限公司 | A kind of numerically controlled lathe traverse feed drive mechanism |
| CN106425639A (en) * | 2016-08-30 | 2017-02-22 | 重庆威诺克智能装备股份有限公司 | Feed transmission structure of numerical control machine tool |
| CN110434616A (en) * | 2019-08-09 | 2019-11-12 | 福建成功机床有限公司 | A kind of novel vertical numerical-control turning |
-
2004
- 2004-06-11 CN CN 200420023649 patent/CN2788961Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602172B (en) * | 2009-04-21 | 2011-01-19 | 上海克迈特精密机床有限公司 | Leading screw support structure and leading screw prestretching method adopting same |
| CN101817153A (en) * | 2010-04-26 | 2010-09-01 | 济南二机床集团有限公司 | Ram type milling head feeding mechanism |
| CN102139447A (en) * | 2011-03-23 | 2011-08-03 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102139447B (en) * | 2011-03-23 | 2012-11-21 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102166720A (en) * | 2011-04-30 | 2011-08-31 | 山东威能数字机器有限公司 | Structural support of ball screw assembly |
| CN102166720B (en) * | 2011-04-30 | 2012-08-15 | 山东威能数字机器有限公司 | Structural support of ball screw assembly |
| CN102996739B (en) * | 2011-09-15 | 2015-07-29 | 上海团结普瑞玛激光设备有限公司 | Flexible lead screw pre-tightening device |
| CN102996739A (en) * | 2011-09-15 | 2013-03-27 | 上海团结普瑞玛激光设备有限公司 | Flexible lead screw pre-tightening device |
| CN102825491A (en) * | 2012-07-15 | 2012-12-19 | 浙江陀曼精密机械有限公司 | Numerical control composite axis non-circular section machining mechanism |
| CN103008773A (en) * | 2012-12-10 | 2013-04-03 | 天水锻压机床(集团)有限公司 | Nut rotating ball screw pair transmission unit |
| CN104690590A (en) * | 2015-01-29 | 2015-06-10 | 山东鲁南机床有限公司 | Differential reversible variable speed transmission mechanism |
| CN106181526A (en) * | 2016-07-25 | 2016-12-07 | 迪百仕电机科技（苏州）有限公司 | A kind of numerically controlled lathe traverse feed drive mechanism |
| CN106425639A (en) * | 2016-08-30 | 2017-02-22 | 重庆威诺克智能装备股份有限公司 | Feed transmission structure of numerical control machine tool |
| CN110434616A (en) * | 2019-08-09 | 2019-11-12 | 福建成功机床有限公司 | A kind of novel vertical numerical-control turning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI UNITED PRIMA LASER EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TUANJIE BAICHAO DIGITAL CONTROL LASER EQUIPMENT CO., LTD., SHANGHAI Effective date: 20070706 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070706 Address after: 201188 Shanghai city Minhang District Kunyang Road No. 2019 Patentee after: Shanghai Unity Purui Laser Equipment Co., Ltd. Address before: 201188 Shanghai City Kunyang Road No. 2019 Patentee before: Shanghai Unity Prima Laser Machinery Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140611 Granted publication date: 20060621 |