CN201405206Y - Auxiliary support device for super-length ball screw - Google Patents

Auxiliary support device for super-length ball screw Download PDF

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Publication number
CN201405206Y
CN201405206Y CN2009200329583U CN200920032958U CN201405206Y CN 201405206 Y CN201405206 Y CN 201405206Y CN 2009200329583 U CN2009200329583 U CN 2009200329583U CN 200920032958 U CN200920032958 U CN 200920032958U CN 201405206 Y CN201405206 Y CN 201405206Y
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CN
China
Prior art keywords
bearing
auxiliary support
screw
ball
ball screw
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN2009200329583U
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Chinese (zh)
Inventor
田红阳
余清华
童国荣
余盛正
魏晓庆
李瑞兴
张凤菊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanland Machine Tool Group Co Ltd
Original Assignee
Hanland Machine Tool Group Co Ltd
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 Hanland Machine Tool Group Co Ltd filed Critical Hanland Machine Tool Group Co Ltd
Priority to CN2009200329583U priority Critical patent/CN201405206Y/en
Application granted granted Critical
Publication of CN201405206Y publication Critical patent/CN201405206Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an auxiliary support device for super-length ball screw. The auxiliary support device comprises two supporting wheels (1), two pinch wheels (4), a bearer (6) and an elasticstretching support body fixedly connected below the bearer (6); wherein the two supporting wheels (1) are installed in the middle above the bearer (6) in parallel, the pinch wheels (4) are respectively installed at the two ends of the bearer (6), and the axial lines of the supporting wheels (1) are vertical to the axial lines of the pinch wheels (4). The auxiliary support device is vertically installed on a machine tool and positioned in the middle of the ball screw, and the two supporting wheels above the device respectively bear the two sides of the ball screw shaft to form V-shaped linear contact. The bearing force can be automatically adjusted along with the change of the internal force on the vertical plane during motion, thereby avoiding the flexural deflection of the ball screw andensuring the high-speed and high-precision running quality of the ball screw.

Description

The auxiliary support apparatus of overlength degree ball-screw
Technical field
The utility model belongs to the parts of lathe, and what relate to is a kind of auxiliary support apparatus to overlength degree ball-screw.
Background technology
At present, ball-screw has been widely used in various high-speed, high precision machine tools.On middle-size and small-size lathe, because the ball-screw diameter is little, length is little, the general support pattern that adopts " two pushing away-two pushing away ", promptly the pre-stretching device by being connected the ball-screw two ends is with ball-screw two ends pretension, so just can effectively reduce the deflection deformation that leading screw produces because of deadweight, and can compensate the thermal deformation of ball-screw, guarantee its running precision.But for the ball-screw on large-scale and the heavy machine tool, it is infeasible only relying on the support pattern of this " two pushing away-two pushing away ".Because large-scale and heavy machine tool uses all be big helical pitch (〉=25mm), major diameter (〉=100mm), overlength degree (〉=7m) ball-screw, the deadweight of this large-scale ball-screw is very big, the deflection deformation amount that deadweight produces is also just bigger, therefore must have a kind of special bracing or strutting arrangement to come ball-screw is supported.
The utility model content
The purpose of this utility model is to provide a kind of secondary support means that is suitable for overlength degree ball-screw, prevents the deflection deformation of ball-screw, guarantee its at a high speed, accurately normally the operation.
The technical scheme that realizes above-mentioned purpose is: the auxiliary support apparatus of overlength degree ball-screw, it is made up of two support wheels, two pinch rollers and bearings and the elastic telescopic supporter that is fixedly connected on the bearing below.Two support wheels are installed in centre position, bearing top side by side, and the axis of two support wheels is on the same horizontal plane; Two pinch rollers are installed in the bearing two ends respectively; The axis of support wheel and the axis normal of pinch roller.
Auxiliary support apparatus is vertically mounted on the lathe bed, and make this device be positioned at the medium position of ball-screw, the axis of two support wheels in device top is parallel with the axis of ballscrew shaft, and two support wheels holding are respectively lived the both sides of ballscrew shaft, becomes that V-shape is linear to be contacted.Adjust the size of support force at last by the amount of spring compression of adjusting bearing below elastic telescopic supporter, eliminate the deflection deformation of ball-screw.
During lathe work, ball-screw rotates, and the nut of ball-screw drives moving component and moves axially, and at this moment, ballscrew shaft and rotation are thereupon lived in two support wheel holdings.(pressing plate respectively is equipped with in the feed screw nut seat both sides that have because the feed screw nut seat both sides of ball-screw are designed to the inclined-plane, the two ends of pressing plate are the inclined-plane), when the front end of feed screw nut seat moves on this auxiliary support apparatus, the inclined-plane of feed screw nut seat (or inclined-plane of two side guides) at first contacts the pinch roller of bearing both sides, pinch roller is pushed gradually and bearing is descended, along with going deep into and the whole decline of bearing of extruding, two support wheels and ballscrew shaft break away from gradually, and the holding power that this moment, spring gave acts on the ball-screw nut seat by the pinch roller of bearing both sides.When the feed screw nut seat was about to pass by pinch roller, by inclined-plane (or inclined-plane of the pressing back-end) transition of rear end, feed screw nut seat both sides, the feed screw nut seat slowly broke away from pinch roller, and bearing sets back gradually, and two support wheels holding are again lived ballscrew shaft.In above-mentioned motion process, the elasticity secondary support means is in the holding state always, holding power is adjusted automatically along with the variation of vertical plane internal force in the motion, make ballscrew shaft be tending towards desirable linear state all the time, avoid the deflection deformation of ball-screw, so just guaranteed high-speed, the high accuracy running quality of ball-screw.
The utility model is simple in structure, practical, and is with low cost, debugs easy for installationly, avoided the deflection deformation of overlength degree ball-screw, for improving large-scale and kinematic accuracy heavy machine tool provides a kind of guarantee.
Description of drawings
Fig. 1 is the organigram of an embodiment of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is installation site of the present utility model and holding state schematic diagram.
Among the figure: 1. support wheel, 2. bearing 3. supports wheel shaft, 4. pinch roller, 5. wheel pressing shaft, 6. bearing 7. moves cover, 8. fixed cover, 9. pull rod shaft, 10. big spring, 11. little springs, 12. cover clamps, 13. adjust nuts, 14. mount pads, 15. adjusting pads, 16. guide holders.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the auxiliary support apparatus of the utility model overlength degree ball-screw is made up of two parts of pressure-bearing mechanism that is positioned at the top and the elastic telescopic supporter that is positioned at the below.Pressure-bearing mechanism is made up of a pair of support wheel 1, a pair of pinch roller 4 and a bearing 6; The elastic telescopic supporter is formed by moving cover 7, fixed cover 8, pull rod shaft 9, big spring 10, little spring 11, cover clamp 12, adjustment nut 13 and mount pad 14.The elastic telescopic supporter is fixedly connected on the below of bearing 6.
The a pair of support wheel 1 of pressure-bearing mechanism is installed in centre position, bearing 6 top side by side, and two axis that support wheel shaft 3 are in (as depicted in figs. 1 and 2) on the same horizontal plane; Two pinch rollers 4 are installed in the two ends of two wheel pressing shafts 5 respectively, are positioned on the bearing 6, support wheel shaft 3 and wheel pressing shaft 5 mutual vertical (as shown in Figure 1).
The outer wall of the mobile cover 7 of elastic telescopic supporter and fixed cover 8 inwalls are for being slidingly matched, one end of pull rod shaft 9 is connected the centre position, below of bearing 6, the threaded end of pull rod shaft 9 other ends stretches out the interstitial hole of the cover clamp 12 of fixed cover 8 lower ends, big spring 10 and little spring 11 all are enclosed within on the pull rod shaft 9, and both ends of the spring withstands on the lower surface of bearing 6 and the upper surface (as shown in Figure 1) of cover clamp 12 respectively.
The spring that is enclosed within on the pull rod shaft 9 can be one, can be two also, decides according to designing requirement.In the embodiment shown in fig. 1, two springs have been installed, i.e. a big spring 10 and a little spring 11 according to designing requirement.
A guide holder 16 is arranged on the outer wall of fixed cover 8, be used for this and install motion guide in vertical direction; There is one group of mount pad 14 upper edge of fixed cover 8, is used for the installation of this device on lathe bed.
Auxiliary support apparatus is vertically mounted on the lathe bed by mount pad 14, and is positioned at the medium position of ball-screw, and two support wheels 1 of device top form linear the contact with ballscrew shaft, and ballscrew shaft (as shown in Figure 3) is lived in holding.Adjust these height of devices by adjusting pad 15,, make the amount of spring compression of elastic telescopic supporter reach the holding power requirement of design again by adjusting the nut 13 on pull rod shaft 9 threaded ends.

Claims (4)

1. the auxiliary support apparatus of an overlength degree ball-screw is characterized in that: it is made up of two support wheels (1), two pinch rollers (4) and a bearing (6) and the elastic telescopic supporter that is fixedly connected on bearing (6) below; Two support wheels (1) are installed in centre position, bearing (6) top side by side, and the axis of two support wheels (1) is on the same horizontal plane, and two pinch rollers (4) are installed in bearing (6) two ends respectively, the axis normal of the axis of support wheel (1) and pinch roller (4).
2. according to the auxiliary support apparatus of the described overlength degree of claim 1 ball-screw, it is characterized in that: described elastic telescopic supporter is formed by moving cover (7), fixed cover (8), pull rod shaft (9), big spring (10), little spring (11), cover clamp (12), adjustment nut (13) and mount pad (14); The outer wall of described mobile cover (7) and fixed cover (8) inwall are for being slidingly matched, one end of pull rod shaft (9) is connected the centre position, below of bearing (6), the threaded end of pull rod shaft (9) other end stretches out the interstitial hole of the cover clamp (12) of fixed cover (8) lower end, big spring (10) and little spring (11) all are enclosed within on the pull rod shaft (9), and both ends of the spring withstands on the lower surface of bearing (6) and the upper surface of cover clamp (12) respectively.
3. according to the auxiliary support apparatus of the described overlength degree of claim 2 ball-screw, it is characterized in that: the spring that is enclosed within on the pull rod shaft (9) is one.
4. according to the auxiliary support apparatus of the described overlength degree of claim 2 ball-screw, it is characterized in that: a guide holder (16) is arranged on the outer wall of described fixed cover (8).
CN2009200329583U 2009-04-23 2009-04-23 Auxiliary support device for super-length ball screw Expired - Fee Related CN201405206Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200329583U CN201405206Y (en) 2009-04-23 2009-04-23 Auxiliary support device for super-length ball screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200329583U CN201405206Y (en) 2009-04-23 2009-04-23 Auxiliary support device for super-length ball screw

Publications (1)

Publication Number Publication Date
CN201405206Y true CN201405206Y (en) 2010-02-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200329583U Expired - Fee Related CN201405206Y (en) 2009-04-23 2009-04-23 Auxiliary support device for super-length ball screw

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CN (1) CN201405206Y (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966653A (en) * 2010-09-21 2011-02-09 桂林机床股份有限公司 Mechanical type longitudinal supporting device of machine tool horizontal lead screw
CN102632399A (en) * 2012-04-23 2012-08-15 苏州江源精密机械有限公司 Screw rod supporting device on planer type milling machine with moving workbench
CN106392684A (en) * 2016-09-26 2017-02-15 苏州德扬数控机械有限公司 Lead screw anti-drooping mechanical supporting device of numerically-controlled machine tool
CN106425535A (en) * 2016-09-26 2017-02-22 苏州德扬数控机械有限公司 Lead screw anti-drooping oil cylinder supporting device of numerical control machine tool
CN106975938A (en) * 2017-05-24 2017-07-25 沈机集团昆明机床股份有限公司 Without impact ballscrew auxiliary supporting device
CN108627098A (en) * 2018-06-21 2018-10-09 南京理工大学 A kind of ball screw assembly, journey error measuring device with compensation device
CN110064685A (en) * 2019-04-09 2019-07-30 山东中硕机械装备制造有限公司 The supporter of restructural mechanism squeezer with buffer function
CN110774039A (en) * 2019-09-17 2020-02-11 浙江合奥机械科技有限公司 Support arrangement based on lathe lead screw
CN115256010A (en) * 2022-08-23 2022-11-01 东莞市威峰智能科技有限公司 Screw rod auxiliary supporting mechanism

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966653B (en) * 2010-09-21 2012-06-13 桂林机床股份有限公司 Mechanical type longitudinal supporting device of machine tool horizontal lead screw
CN101966653A (en) * 2010-09-21 2011-02-09 桂林机床股份有限公司 Mechanical type longitudinal supporting device of machine tool horizontal lead screw
CN102632399A (en) * 2012-04-23 2012-08-15 苏州江源精密机械有限公司 Screw rod supporting device on planer type milling machine with moving workbench
CN106392684B (en) * 2016-09-26 2018-11-27 苏州德扬数控机械有限公司 The screw rod sag-resistant mechanical support device of numerically-controlled machine tool
CN106392684A (en) * 2016-09-26 2017-02-15 苏州德扬数控机械有限公司 Lead screw anti-drooping mechanical supporting device of numerically-controlled machine tool
CN106425535A (en) * 2016-09-26 2017-02-22 苏州德扬数控机械有限公司 Lead screw anti-drooping oil cylinder supporting device of numerical control machine tool
CN106975938A (en) * 2017-05-24 2017-07-25 沈机集团昆明机床股份有限公司 Without impact ballscrew auxiliary supporting device
CN108627098A (en) * 2018-06-21 2018-10-09 南京理工大学 A kind of ball screw assembly, journey error measuring device with compensation device
CN108627098B (en) * 2018-06-21 2024-03-19 南京理工大学 Ball screw pair stroke error measuring device with compensation device
CN110064685A (en) * 2019-04-09 2019-07-30 山东中硕机械装备制造有限公司 The supporter of restructural mechanism squeezer with buffer function
CN110064685B (en) * 2019-04-09 2024-04-30 山东中硕机械装备制造有限公司 Support body of reconfigurable mechanism plate bending machine with buffer function
CN110774039A (en) * 2019-09-17 2020-02-11 浙江合奥机械科技有限公司 Support arrangement based on lathe lead screw
CN115256010A (en) * 2022-08-23 2022-11-01 东莞市威峰智能科技有限公司 Screw rod auxiliary supporting mechanism

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100217

Termination date: 20150423

EXPY Termination of patent right or utility model