CN103158025A - Bearing combination support structure for rolling ball lead screw support end - Google Patents
Bearing combination support structure for rolling ball lead screw support end Download PDFInfo
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- CN103158025A CN103158025A CN2013101093193A CN201310109319A CN103158025A CN 103158025 A CN103158025 A CN 103158025A CN 2013101093193 A CN2013101093193 A CN 2013101093193A CN 201310109319 A CN201310109319 A CN 201310109319A CN 103158025 A CN103158025 A CN 103158025A
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Abstract
The invention discloses a bearing combination support structure for a rolling ball lead screw support end. The bearing combination support structure comprises a support end bearing chamber in a cylindrical shape, a deep groove ball bearing and an angular contact bearing are arranged in the support end bearing chamber, a rolling ball lead screw is arranged in inner holes of the deep groove ball bearing and the angular contact bearing, and a locking nut is arranged at the end portion of the rolling ball lead screw. By means of organic combination of the deep groove ball bearing and the angular contact bearing, pretensioning of the rolling ball lead screw is achieved to offset hot extension of the rolling ball lead screw. The bearing combination support structure for the rolling ball lead screw support end is high in transmission precision and low in cost, and support rigidity of the rolling ball lead screw is large, so that manufacture and maintenance cost of a machine lathe are reduced, and good social and economic efficiency are realized.
Description
Technical field
The invention belongs to the machining set-up technical field, relate to a kind of supporting construction of the ball-screw support end for machine industry, a kind of bearing integral supporting structure for the ball-screw support end when particularly leading screw needs prestretched.
Background technology
At present, the supporting way of known machine tool ball screw support end can be summarized as two kinds, a kind of supporting way that matches with angular contact bearing for angular contact bearing, this supporting way is mainly used in the fixed support of ball-screw support end, can carry out prestretched to offset the thermal stretching of ball-screw to ball-screw, the support stiffness of ball-screw is large, transmission accuracy is high, but the cost of support unit is relatively high.Another kind is the deep groove ball bearing supporting way, and this supporting way can not carry out prestretched to offset the thermal stretching of ball-screw to ball-screw, and the ball-screw support end can be flexible along the leading screw axis, and support stiffness and the transmission accuracy of leading screw are relatively low.
Summary of the invention
The purpose of this invention is to provide a kind of bearing integral supporting structure for the ball-screw support end, can make the prestretched ball-screw to offset the ball-screw thermal stretching, the support stiffness of ball-screw is large, and transmission accuracy is high, and cost is low.
Technical scheme of the present invention is, a kind of bearing integral supporting structure for the ball-screw support end, comprise support end bearing chamber cylindraceous, deep groove ball bearing and angular contact bearing are installed in the support end bearing chamber, in deep groove ball bearing and angular contact bearing endoporus, ball-screw is installed, the ball-screw end is provided with lock nut.
Characteristics of the present invention also are,
Wherein lock nut is positioned at a side of angular contact bearing, and deep groove ball bearing is positioned at the opposite side of angular contact bearing.
Wherein support end bearing chamber inner surface is provided with the shaft shoulder away from an end of ball-screw end, and deep groove ball bearing and angular contact bearing are 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, realization is carried out prestretched to offset the thermal stretching of ball-screw to ball-screw, the bearing integral supporting structure of the ball-screw support end that a kind of cost that the support stiffness of ball-screw is large, transmission accuracy is high is low, reduce lathe manufacturing and maintenance cost, thereby realized society and economic benefit preferably.
Description of drawings
Fig. 1 is the structural representation of a kind of bearing integral supporting structure for the ball-screw support end of the present invention.
In figure, 1. ball-screw, 2. deep groove ball bearing, 3. angular contact bearing, 4. lock nut, 5. support end bearing chamber, the 6. shaft shoulder.
The specific embodiment
The invention provides a kind of bearing integral supporting structure for the ball-screw support end, as shown in Figure 1, comprise support end bearing chamber 5 cylindraceous, deep groove ball bearing 2 and angular contact bearing 3 are installed in support end bearing chamber 5, ball-screw 1 is installed in the endoporus of deep groove ball bearing 2 and angular contact bearing 3, and ball-screw 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 the opposite side of angular contact bearing 3.Support end bearing chamber 5 inner surfaces are provided with the shaft shoulder 6 away from an end of ball-screw 1 end, and 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 are packed in support end bearing chamber 5 successively, and ball-screw 1 support end axle journal passes deep groove ball bearing 2, angular contact bearing 3 endoporus successively, do the locking of prestretched amount by 4 pairs of ball-screws 1 of lock nut.
If ball-screw 1 thermal stretching amount is during less than the prestretched amount, pretension deep groove ball bearing 2, angular contact bearing 3 are tensioned on the shaft shoulder 6 of support end bearing chamber 5, support effect is the same with the combination of " angular contact bearing+angular contact bearing ", and the support stiffness of ball-screw 1 is large, transmission accuracy is high.
If ball-screw 1 thermal stretching amount is during greater than the prestretched amount, deep groove ball bearing 2, angular contact bearing 3 can be vacillated along ball-screw 1 axis direction support end bearing chamber 5 is interior, support effect is the same with " deep groove ball bearing ", but the ball-screw thermal stretching amount of structure of the present invention part is offset by the prestretched amount, still has the high characteristics of transmission accuracy.
Supporting construction of the present invention pack into successively in the support end bearing chamber 5 of ball-screw 1 support end a deep groove ball bearing 2 and an angular contact ball bearing 3, by the locking nut 4 on locking ball-screw 1 support end axle journal, radial load is carried near the shaft shoulder 6 on support end bearing chamber 5 in deep groove ball bearing 2 outer rings; Near the angular contact bearing 3 in deep groove ball bearing 2 outsides by lock nut 4 coupling mechanism forces carrying axial forces.The bearing outer ring of the combined support mode of this " deep groove ball bearing+angular contact ball bearing " is without locking, and during greater than the prestretched amount, this combination can be flexible along ball-screw 1 axis when ball-screw 1 thermal stretching amount.
When being used for the leading screw support, distinguishing feature of the present invention is:
When 1) ball-screw thermal stretching amount is less than the prestretched amount, the combination of this " deep groove ball bearing+angular contact ball bearing " is after pretension, deep groove ball bearing and angular contact bearing are tensioned on the shaft shoulder of ball-screw support end bearing chamber, the support effect of this combination is the same with " angular contact bearing+angular contact bearing ", and the support stiffness of ball-screw is large, transmission accuracy is high.
When 2) ball-screw thermal stretching amount is greater than the prestretched amount, the combined support mode of this " deep groove ball bearing+angular contact ball bearing " can be extended along the ball-screw axis, support effect is the same with " deep groove ball bearing ", but the part of the ball-screw thermal stretching amount under this combination is offset by the prestretched amount, and ball-screw still has the high characteristics of transmission accuracy.
3) the combined support mode of this " deep groove ball bearing+angular contact ball bearing " owing to having substituted an angular contact ball bearing with a deep groove ball bearing, when, transmission accuracy large at the support stiffness that guarantees ball-screw is high, makes cost significantly reduce.
The present invention is by organic assembling deep groove ball bearing and angular contact ball bearing, realization is carried out prestretched to offset the thermal stretching of ball-screw to ball-screw, the bearing integral supporting structure of the ball-screw support end that a kind of cost that the support stiffness of ball-screw is large, transmission accuracy is high is low, reduce lathe manufacturing and maintenance cost, thereby realized society and economic benefit preferably.
Claims (3)
1. bearing integral supporting structure that is used for the ball-screw support end, it is characterized in that, comprise support end bearing chamber cylindraceous (5), deep groove ball bearing (2) and angular contact bearing (3) are installed in support end bearing chamber (5), in deep groove ball bearing (2) and angular contact bearing (3) endoporus, ball-screw (1) is installed, ball-screw (1) end is provided with lock nut (4).
2. the bearing integral supporting structure for the ball-screw support end according to claim 1, is characterized in that, described lock nut (4) is positioned at a side of angular contact bearing (3), and deep groove ball bearing (2) is positioned at the opposite side of angular contact bearing (3).
3. the bearing integral supporting structure for the ball-screw support end according to claim 2, it is characterized in that, described support end bearing chamber (5) inner surface is provided with the shaft shoulder (6) away from an end of ball-screw (1) end, and deep groove ball bearing (2) and angular contact bearing (3) are 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)
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| CN103158025A true CN103158025A (en) | 2013-06-19 |
| CN103158025B 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433796A (en) * | 2013-08-15 | 2013-12-11 | 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 | Pretensioning type screw rod |
| 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 |
| CN106975959A (en) * | 2017-04-25 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Rotary shaft feed arrangement with thermal stretching collocation structure |
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| JPH10118876A (en) * | 1996-10-24 | 1998-05-12 | Niigata Eng Co Ltd | Feed device and feed control method for machine tool and the like |
| CN101602172A (en) * | 2009-04-21 | 2009-12-16 | 上海克迈特精密机床有限公司 | A kind of leading screw supporting construction and adopt the leading screw prestretched method of this supporting construction |
| 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 |
| 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 |
| 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 |
| 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 |
| 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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2013
- 2013-03-29 CN CN201310109319.3A patent/CN103158025B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10118876A (en) * | 1996-10-24 | 1998-05-12 | Niigata Eng Co Ltd | Feed device and feed control method for machine tool and the like |
| 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 |
| CN101602172A (en) * | 2009-04-21 | 2009-12-16 | 上海克迈特精密机床有限公司 | A kind of leading screw supporting construction and adopt the leading screw prestretched method of this supporting construction |
| 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 |
| 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 |
| 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433796A (en) * | 2013-08-15 | 2013-12-11 | 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 | Pretensioning type screw rod |
| 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 |
| CN106975959A (en) * | 2017-04-25 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Rotary shaft feed arrangement with thermal stretching collocation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103158025B (en) | 2016-05-11 |
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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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