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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
ball
bearing
screw
support
angular contact
Prior art date
Application number
CN201310109319.3A
Other languages
Chinese (zh)
Other versions
CN103158025A (en
Inventor
郝常礼
王娅楠
朱武强
Original Assignee
西安北村精密机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安北村精密机械有限公司 filed Critical 西安北村精密机械有限公司
Priority to CN201310109319.3A priority Critical patent/CN103158025B/en
Publication of CN103158025A publication Critical patent/CN103158025A/en
Application granted granted Critical
Publication of CN103158025B publication Critical patent/CN103158025B/en

Links

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

A kind of bearing integral supporting structure for ball-screw support end
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).
CN201310109319.3A 2013-03-29 2013-03-29 A kind of bearing integral supporting structure for ball-screw support end CN103158025B (en)

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

Family

ID=48581838

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310109319.3A CN103158025B (en) 2013-03-29 2013-03-29 A kind of bearing integral supporting structure for ball-screw support end

Country Status (1)

Country Link
CN (1) CN103158025B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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 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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN103158025A (en) 2013-06-19

Similar Documents

Publication Publication Date Title
US9528581B2 (en) Motor driven linear actuator and electric motor thereof
CN101596681B (en) High-precision rotary working-table driven by moment motor
US10294990B2 (en) Linear motion guide device
CN103406735B (en) The processing method of robot RV reducer crank axle
CN204239629U (en) The dust-proof accurate cycloid speed reducer of the built-in integrated carrier bearing of planetary pinion
CN102139447B (en) Fully-fixed screw rod prestretching mechanism
CN202877995U (en) Double nut driven type ball screw assembly feeding mechanism
CN102996625A (en) Thin-wall angular contact full ball bearing and processing method thereof
CN102294600B (en) Heavy type numerically controlled rotary table with rolling and sliding compound guide rails and driving mechanism thereof
CN102166720B (en) Structural support of ball screw assembly
CN202367453U (en) Static pressure direct drive rotating platform device of large milling turning machining center
CN202326756U (en) Upper bearing base sleeve structure for rolling ball high-speed spindle
CN104190959B (en) There is the Aerostatic Spindle of turn error monitoring function
CN103162962A (en) Bi-directional loading testing machine of knuckle bearing
CN102927255A (en) Planetary gear transmission device and assembly method thereof
JP2014020481A (en) Angular contact ball bearing
US20110016999A1 (en) Cylinder device
CN103481013A (en) Axle-rolling device
CN100436009C (en) Hot-isostatic pressure silicon nitride all-ceramic electric main shaft and its mfg. method
CN103286678B (en) A kind of Multifunction internal formula dynamic/static piezoelectric main shaft for efficient high-speed precision machine tool
CN100368126C (en) Small high-speed constant-pressure prepressing apparatus of main bearing
CN106285456B (en) A kind of combined type PDC- thrust ball bearing long-lives driving-shaft assembly
CN103883683A (en) Single-stage rigid tooth surface cycloid steel ball planetary gear reducer
CN102562956B (en) External wave type compound rolling moveable teeth speed reducer
CN202209382U (en) Transmission mechanism for thin type harmonic retarder

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

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.

TR01 Transfer of patent right