CN103158025B - A kind of bearing integral supporting structure for ball-screw support end - Google Patents
A kind of bearing integral supporting structure for ball-screw support end Download PDFInfo
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- CN103158025B CN103158025B CN201310109319.3A CN201310109319A CN103158025B CN 103158025 B CN103158025 B CN 103158025B CN 201310109319 A CN201310109319 A CN 201310109319A CN 103158025 B CN103158025 B CN 103158025B
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of bearing integral supporting structure for ball-screw support end, comprise support end bearing chamber cylindraceous, deep groove ball bearing and angular contact bearing are installed in support end bearing chamber, in deep groove ball bearing and angular contact bearing endoporus, ball-screw is installed, ball-screw end is provided with lock nut. By organic assembling deep groove ball bearing and angular contact ball bearing, realize ball-screw is carried out to prestretched to offset the thermal stretching of ball-screw, the bearing integral supporting structure of the ball-screw support end that support stiffness a kind of cost large, that transmission accuracy is high of ball-screw is low, reduce lathe manufacture and maintenance cost, thereby realized good society and economic benefit.
Description
Technical field
The invention belongs to machining set-up technical field, relate to a kind of ball-screw for machine industry and prop upThe supporting construction of support end, a kind of axle for ball-screw support end when particularly leading screw needs prestretchedHold integral supporting structure.
Background technology
At present, the supporting way of known machine tool ball screw support end can be summarized as two kinds, and one is angleThe supporting way that contact bearing matches with angular contact bearing, this supporting way is mainly used in ball-screwThe fixed support of support end, can carry out prestretched to offset the thermal stretching of ball-screw to ball-screw, rollsThe support stiffness of ballscrew is large, transmission accuracy is high, but the cost of support unit is relatively high. Another kind isDeep groove ball bearing supporting way, this supporting way can not carry out prestretched to offset ball to ball-screwThe thermal stretching of leading screw, ball-screw support end can be flexible along leading screw axis, the support stiffness of leading screw and transmissionPrecision is relatively low.
Summary of the invention
The object of this invention is to provide a kind of bearing integral supporting structure for ball-screw support end, energyEnough make prestretched ball-screw to offset ball-screw thermal stretching, the support stiffness of ball-screw is large, transmissionPrecision is high, and cost is low.
Technical scheme of the present invention is, a kind of bearing integral supporting structure for ball-screw support end,Comprise support end bearing chamber cylindraceous, deep groove ball bearing and angular contact axle are installed in support end bearing chamberHold, in deep groove ball bearing and angular contact bearing endoporus, ball-screw is installed, ball-screw end is provided withLock nut.
Feature of the present invention is also,
Wherein lock nut is positioned at a side of angular contact bearing, and deep groove ball bearing is positioned at the another of angular contact bearingOne side.
Wherein support end bearing chamber inner surface is provided with the shaft shoulder away from one end of ball-screw end, zanjon ball journalHold and angular contact bearing is arranged between lock nut and the shaft shoulder.
The invention has the beneficial effects as follows, by organic assembling deep groove ball bearing and angular contact ball bearing, realizeBall-screw is carried out to prestretched to offset the thermal stretching of ball-screw, the support stiffness of ball-screw is large,The bearing integral supporting structure of the ball-screw support end that a kind of cost that transmission accuracy is high is low, has reduced machineBed is manufactured and maintenance cost, thereby realizes good society and economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of bearing integral supporting structure for ball-screw support end of the present inventionFigure.
In figure, 1. ball-screw, 2. deep groove ball bearing, 3. angular contact bearing, 4. lock nut, 5. supportsEnd bearing chamber, the 6. shaft shoulder.
Detailed description of the invention
The invention provides a kind of bearing integral supporting structure for ball-screw support end, as shown in Figure 1,Comprise support end bearing chamber 5 cylindraceous, deep groove ball bearing 2 and angle are installed in support end bearing chamber 5Contact bearing 3, is provided with ball-screw 1 in the endoporus of deep groove ball bearing 2 and angular contact bearing 3, rollsBallscrew 1 end is provided with lock nut 4.
Wherein lock nut 4 is positioned at a side of angular contact bearing 3, and deep groove ball bearing 2 is positioned at angular contact axleHold 3 opposite side. Support end bearing chamber 5 inner surfaces are provided with the shaft shoulder away from one end of ball-screw 1 end6, deep groove ball bearing 2 and angular contact bearing 3 are arranged between lock nut 4 and the shaft shoulder 6.
In Fig. 1, deep groove ball bearing 2, angular contact bearing 3 pack in support end bearing chamber 5 successively, ballLeading screw 1 support end axle journal is successively through deep groove ball bearing 2, angular contact bearing 3 endoporus, by lock nut 4Ball-screw 1 is done to the locking of prestretched amount.
If when ball-screw 1 thermal stretching amount is less than prestretched amount, pretension deep groove ball bearing 2, angular contact bearing3 are tensioned on the shaft shoulder 6 of support end bearing chamber 5, support effect and " angular contact bearing+angular contact bearing "Combination the same, the support stiffness of ball-screw 1 is large, transmission accuracy is high.
If when ball-screw 1 thermal stretching amount is greater than prestretched amount, deep groove ball bearing 2, angular contact bearing 3 canVacillate along ball-screw 1 axis direction support end bearing chamber 5 is interior, support effect and " deep groove ball bearing "Sample, but the ball-screw thermal stretching amount part of structure of the present invention offset by prestretched amount, still has biographyThe moving high feature of precision.
Supporting construction of the present invention packs successively one in the support end bearing chamber 5 of ball-screw 1 support endIndividual deep groove ball bearing 2 and an angular contact ball bearing 3, by locking on ball-screw 1 support end axle journalLocking nut 4, radial load, near the shaft shoulder 6 on support end bearing chamber 5, is carried in deep groove ball bearing 2 outer rings;Angular contact bearing 3 near deep groove ball bearing 2 outsides carries axial forces by lock nut 4 coupling mechanism forces. ThisThe bearing outer ring of the combined support mode of kind " deep groove ball bearing+angular contact ball bearing ", without locking, is worked as ballWhen leading screw 1 thermal stretching amount is greater than prestretched amount, this combination can be flexible along ball-screw 1 axis.
While support for leading screw, distinguishing feature of the present invention is:
1) when ball-screw thermal stretching amount is less than prestretched amount, this " deep groove ball bearing+angular contact ball journalHold " combination after pretension, deep groove ball bearing and angular contact bearing be tensioned to ball-screw supportOn the shaft shoulder of end bearing chamber, the support effect of this combination and " angular contact bearing+angular contact bearing "Equally, the support stiffness of ball-screw is large, transmission accuracy is high.
2) when ball-screw thermal stretching amount is greater than prestretched amount, this " deep groove ball bearing+angular contact ball journalHold " combined support mode can extend along ball-screw axis, one of support effect and " deep groove ball bearing "Sample, but ball-screw thermal stretching amount part under this combination offset by prestretched amount, and ball-screw is stillHave the advantages that transmission accuracy is high.
3) the combined support mode of this " deep groove ball bearing+angular contact ball bearing ", due to a zanjonBall bearing has substituted an angular contact ball bearing,, transmission accuracy large at the support stiffness that ensures ball-screwHigh time, cost is significantly reduced.
The present invention, by organic assembling deep groove ball bearing and angular contact ball bearing, realizes ball-screw is carried outPrestretched to be to offset the thermal stretching of ball-screw, and the support stiffness of ball-screw is large, transmission accuracy is high oneThe bearing integral supporting structure of planting the ball-screw support end that cost is low, has reduced lathe manufacture and has been maintained asThis, thus realize good society and economic benefit.
Claims (1)
1. for a bearing integral supporting structure for ball-screw support end, it is characterized in that,Comprise support end bearing chamber cylindraceous (5), support end bearing chamber is provided with zanjon in (5)Ball bearing (2) and angular contact bearing (3), deep groove ball bearing (2) and angular contact bearing (3)Ball-screw (1) is installed in endoporus, and ball-screw (1) end is provided with lock nut (4),Described lock nut (4) is positioned at a side of angular contact bearing (3), deep groove ball bearing (2)Be positioned at the opposite side of angular contact bearing (3), described support end bearing chamber (5) inner surface away fromOne end of ball-screw (1) end is provided with the shaft shoulder (6), deep groove ball bearing (2) and corner connectionContact bearing (3) is arranged between lock nut (4) and the shaft shoulder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109319.3A CN103158025B (en) | 2013-03-29 | 2013-03-29 | A kind of bearing integral supporting structure for ball-screw support end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109319.3A CN103158025B (en) | 2013-03-29 | 2013-03-29 | A kind of bearing integral supporting structure for ball-screw support end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103158025A CN103158025A (en) | 2013-06-19 |
| CN103158025B true CN103158025B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310109319.3A Active CN103158025B (en) | 2013-03-29 | 2013-03-29 | A kind of bearing integral supporting structure for ball-screw support end |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433796B (en) * | 2013-08-15 | 2015-07-22 | 烟台海德汽车零部件有限责任公司 | Axial pre-tightening device of ball screw |
| CN103722434A (en) * | 2013-11-26 | 2014-04-16 | 无锡京华重工装备制造有限公司 | Installing and positioning structure for ball screw transmission |
| CN103775511A (en) * | 2014-01-24 | 2014-05-07 | 江苏大卫精工科技有限公司 | Pre-stretching type screw |
| CN106122409A (en) * | 2016-06-27 | 2016-11-16 | 芜湖市海联机械设备有限公司 | A kind of ball screw bearing arrangement |
| CN106239235A (en) * | 2016-07-26 | 2016-12-21 | 成都普瑞斯数控机床有限公司 | There is the ball wire rod mechanism of bearing positioning device |
| CN106425641A (en) * | 2016-09-26 | 2017-02-22 | 苏州德扬数控机械有限公司 | Lead screw prestretching structure of numerical control machine tool |
| CN106975959B (en) * | 2017-04-25 | 2023-07-25 | 沈机集团昆明机床股份有限公司 | Rotary shaft feeding device with thermal elongation compensation structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3613744B2 (en) * | 1996-10-24 | 2005-01-26 | 株式会社ニイガタマシンテクノ | Feeding device and feed control method for machine tools, etc. |
| CN201371382Y (en) * | 2009-03-12 | 2009-12-30 | 嘉兴市峰佳吉晨实业有限公司 | Screw rod bearing device |
| 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 |
| CN201815913U (en) * | 2010-05-21 | 2011-05-04 | 宝鸡忠诚机床股份有限公司 | Feed system of numerically controlled lathe with quantitative pre-tightening function of lead screw |
| CN102011844A (en) * | 2010-12-29 | 2011-04-13 | 江苏瑞安特机械集团有限公司 | Hollow internal cooling type 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 |
| CN202732434U (en) * | 2012-07-19 | 2013-02-13 | 江苏大中电机股份有限公司 | Motor bearing composite structure special for self-priming pump |
| CN203176288U (en) * | 2013-03-29 | 2013-09-04 | 西安北村精密机械有限公司 | Support structure for support end of ball screw |
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Effective date of registration: 20190219 Address after: 710065 No. 70 Jinye Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Shaanxi Robot Automation Technology Co., Ltd. Address before: 710075 No. 46, High-tech Sixth Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xi'an Kitamura Machine Works Co., Ltd. |
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Address after: 710000 No. 16, Shanglinyuan Third Road, high tech Zone, Xi'an, Shaanxi Patentee after: Shaanxi nobet Automation Technology Co.,Ltd. Address before: 710065 No. 70 Jinye Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: SHAANXI OBOTR AUTOMATION TECHNOLOGY CO.,LTD. |
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