CN103335080B - A kind of heavily loaded ball screw pair fittable slackening device - Google Patents
A kind of heavily loaded ball screw pair fittable slackening device Download PDFInfo
- Publication number
- CN103335080B CN103335080B CN201210565925.1A CN201210565925A CN103335080B CN 103335080 B CN103335080 B CN 103335080B CN 201210565925 A CN201210565925 A CN 201210565925A CN 103335080 B CN103335080 B CN 103335080B
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- ball screw
- bearing
- support
- screw
- angular contact
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Abstract
The invention discloses a kind of heavily loaded ball screw pair fittable slackening device, it comprises: synchronous pulley, screw set, two angular contact bearings, support, bearing cap, ball screw, slide plate, shoes, ball nut and two guide rails; The present invention makes ball screw can rotate in bearing, but can not move in the axial direction, and the rotary motion of motor is transformed into straight line motion; Larger end thrust can be born, also can bear less axial tension, stable and can unbalance loading be born; The angular contact bearing supported is sealed in a space closed, and extraneous dust etc. can not be entered, and the lubricant oil injecting the inside can not leak, ensure the service behaviour of ball screw pair, extend the working life of ball screw pair.Apparatus structure of the present invention is compact, and can be applicable to one end can support, the ball screw pair application that the other end cannot provide support, and when ball screw is out of shape by larger end thrust, can as usual run.
Description
Technical field
The present invention relates to a kind of ball screw pair fittable slackening device, particularly relate to a kind of heavily loaded ball screw pair fittable slackening device.
Background technique
In the application such as injection machine, press machine, traditional ball screw pair is installed method for supporting and is directly adopted roller bearings, can only bear unidirectional thrust load, and load can not be too large; Operationally easily enter dust and moisture, affect the working life of machine; This simple supporting way is difficult to the stability and the precision that ensure machine operation.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of heavily loaded ball screw pair fittable slackening device is provided.The present invention can bear large end thrust, and held stationary runs, and has superperformance and longer working life.
The object of the invention is to be achieved through the following technical solutions: a kind of heavily loaded ball screw pair fittable slackening device, it comprises: synchronous pulley, screw set, two angular contact bearings, support, bearing cap, ball screw, slide plate, shoes, ball nut and two guide rails; Wherein, described support left side wall has and is positioned at central authorities and the bearing hole that communicates of left and right, and two angular contact bearings are coordinated by machinery and are arranged in this bearing hole, and have step on the left of bearing hole, left side, angular contact bearing outer ring is close to step side; Ball screw is arranged in angular contact bearing by machinery cooperation, and through two angular contact bearing inner rings, ball screw has the shaft shoulder, is close to the right side of angular contact bearing inner ring on the left of the shaft shoulder; On the right side of support bearing hole, bearing cap is housed, on the left of bearing cap, has step hole; With screw by fastening for bearing cap the right being arranged on support left side wall; In the left side of support bearing hole, have screw set, screw set inner circle is installed on ball screw by machinery cooperation; Screw set right flank is close to the left side of angular contact bearing inner ring; Screw set left surface is close to the right side of synchronous pulley; And the left side nut of synchronous pulley compresses; The internal thread of nut and the external thread rotary of ball screw left end are combined; Support is provided with two parallel guide rails, slide plate has center hole, is a circle boss around center hole; Slide plate is arranged on two guide rails of support by two shoes; Ball nut screw thread is screwed on ball screw, and ball nut is through the center hole of slide plate.Ball nut has flange, and the left surface of flange right flank and slide plate boss is fitted, and is arranged on slide plate by screw fastening for ball nut; Synchronous pulley is arranged on ball screw left end, is connected between synchronous pulley with ball screw with key.
Further, between bearing cap and support, have rubber washer, this packing ring can seal, and can regulate the axial position of bearing cap simultaneously, make bearing cap left end face be close to the right side of angular contact bearing outer ring according to the degree of tightness of screw.
Further, on the left of the bearing hole on support, seal ring is housed, is fixed on support with pressure ring by seal ring, the inner circle of seal ring is fitted on the cylindrical of screw set; Have bearing cap on the right side of bearing hole on support, bearing cap inner circle is equipped with seal ring, and the inner circle of seal ring is fitted on the cylindrical of ball screw.
The invention has the beneficial effects as follows, heavily loaded ball screw pair fittable slackening device of the present invention, makes ball screw can rotate in bearing, but can not move in the axial direction, the rotary motion of motor is transformed into straight line motion; Larger end thrust can be born, also can bear less axial tension, stable and can unbalance loading be born; The angular contact bearing supported is sealed in a space closed, and extraneous dust etc. can not be entered, and the lubricant oil injecting the inside can not leak, ensure the service behaviour of ball screw pair, extend the working life of ball screw pair.Apparatus structure of the present invention is compact, and can be applicable to one end can support, the ball screw pair application that the other end cannot provide support, and when ball screw is out of shape by larger end thrust, can as usual run.
Accompanying drawing explanation
Fig. 1 is the structural representation of heavily loaded ball screw pair fittable slackening device.
In figure: nut 1, key 2, synchronous pulley 3, pressure ring 4, seal ring 5, screw set 6, angular contact bearing 7, support 8, packing ring 9, bearing cap 10, ball screw 11, slide plate 12, shoes 13, ball nut 14, guide rail 15.
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing, object of the present invention and effect will become more obvious.
As shown in Figure 1, the present invention's heavy duty ball screw pair fittable slackening device comprises: synchronous pulley 3, screw set 6, two angular contact bearings 7, support 8, bearing cap 10, ball screw 11, slide plate 12, shoes 13, ball nut 14 and two guide rails 15 etc.
Support 8 left side wall has and is positioned at central authorities and the bearing hole that communicates of left and right, and two angular contact bearings 7 are coordinated by machinery and are arranged in this bearing hole, and have step on the left of bearing hole, left side, angular contact bearing 7 outer ring is close to step side; Ball screw 11 is arranged in angular contact bearing 7 by machinery cooperation, and through two angular contact bearing 7 inner rings, ball screw 11 has the shaft shoulder, is close to the right side of angular contact bearing 7 inner ring on the left of the shaft shoulder.
Such installation method for supporting, makes ball screw 11 can rotate in bearing, but can not move to the left or to the right in the axial direction, and can bear larger end thrust.
On the right side of support 8 bearing hole, bearing cap 10 is housed, on the left of bearing cap 10, has step hole; With screw by fastening for bearing cap 10 the right being arranged on support 8 left side wall; Between bearing cap 10 and support 8, have rubber washer 9, this packing ring can seal, and can regulate the axial position of bearing cap 10 simultaneously, make bearing cap 10 left end face be close to the right side of angular contact bearing 7 outer ring according to the degree of tightness of screw.
In the left side of support 8 bearing hole, have screw set 6, screw set 6 inner circle is installed on ball screw 11 by machinery cooperation; Screw set 6 right flank is close to the left side of angular contact bearing 7 inner ring; Screw set 6 left surface is close to the right side of synchronous pulley 3; And the left side nut 1 of synchronous pulley 3 compresses; The internal thread of nut 1 and the external thread rotary of ball screw 11 left end are combined.
Such installation method for supporting, makes ball screw 11 can rotate in bearing, but can not move in the axial direction, and can bear less axial tension.
When slide plate 12 pairs of ball nuts 14 act on axial tension, pass to ball screw 11 by the ball thrust of ball screw pair inside; By the right flank of nut 1 be combined with the external thread rotary of ball screw 11 left end, pull transfer is to synchronous pulley 3; The inner ring of angular contact bearing 7 is delivered to again by screw set 6; By the steel ball of angular contact bearing 7 inside, pass to the outer ring of angular contact bearing 7; Bearing cap 10 is delivered to again from the right side of angular contact bearing 7 outer ring; And bearing cap 10 is arranged on the right of support 8 left side wall by screw fastening, so the axial tension from slide plate 12 is also finally be delivered on support 8.
Seal ring 5 is housed on the left of the bearing hole on support 8, is fixed on support 8 with pressure ring 4 by seal ring 5, the inner circle of seal ring 5 is fitted on the cylindrical of screw set 6; Have bearing cap 10 on the right side of bearing hole on support 8, bearing cap 10 inner circle is equipped with seal ring, and the inner circle of seal ring is fitted on the cylindrical of ball screw 11.
Such installation method for supporting, makes ball screw 11 rotate, and angular contact bearing 7 is sealed in a space closed simultaneously, extraneous dust etc. can not be entered, and the lubricant oil injecting the inside can not leak, ensure the service behaviour of ball screw pair, extend the working life of ball screw pair.
Support 8 has left side wall, right side wall, support 8 is provided with two guide rails 15.Article two, guide rail 15 is parallel to each other, and is distributed in the both sides of support 8 bearing hole axis symmetrically.Slide plate 12 has center hole, is a circle boss around center hole; Slide plate 12 is equipped with two shoes 13; Two shoes 13 are arranged on two guide rails 15 of support 8 respectively.
Ball nut 14 screw thread is screwed on ball screw 11, and ball nut 14 is through the center hole of slide plate 12.Ball nut 14 has flange, and the left surface of flange right flank and slide plate 12 boss is fitted, and is arranged on slide plate 12 fastening for ball nut 14 by screw.
Ball nut 14 and slide plate 12 can only do straight line motion along guide rail 15; When ball screw 11 rotates, ball nut 14 can not rotate, can only relative to ball screw 11 moving linearly.
Such installation method for supporting, along two guide rail 15 moving linearlies, but can not be able to be rotated by shoes 13 slide plate 12.Guiding and stable effect are played in the motion of guide rail 15 pairs of slide plates 12, can bear certain unbalance loading.Unbalance loading is exactly that the position of total force and direction do not overlap with the axis of ball screw 11.
Ball screw 11 left end is through two angular contact bearing 7 inner rings, and synchronous pulley 3 is arranged on ball screw 11 left end, is connected between synchronous pulley 3 with ball screw 11 with key 2, and to transmit rotation and moment of torsion, the left side of synchronous pulley 3 is fixed by nut 1 simultaneously.The right-hand member of ball screw 11 freely.
Such installation method, makes synchronous pulley 3 and ball screw 11 link together, can not relatively rotate.And when ball screw 11 is out of shape by larger end thrust, can as usual run.
Working procedure of the present invention is as follows: during work, is delivered to the power of synchronous pulley 3 from motor, drives ball screw 11 to rotate.By the ball screw pair be made up of ball screw 11 and ball nut 14, rotational transform becomes the straight line motion of ball nut 14, slide plate 12 is moved linearly on guide rail 15, but can not rotate, and less axial tension, larger end thrust and certain uneven loading action can be born.
The ball screw pair fittable slackening device of the present invention's design can bear thrust or the pulling force of axial both direction, and can bear larger end thrust.The ball screw pair fittable slackening device of the present invention's design is sealed in a space closed angular contact bearing, and reinject lubricant oil, can reduce friction, improves transmission efficiency, can extend again the working life of bearing.
The present invention adopts angular contact bearing back-up roller ballscrew, by the bearing hole on support, bearing cap and seal ring etc., angular contact bearing is sealed in a space closed.Meanwhile, all utilize corresponding part to fix at ball screw left-hand and dextrad, from the thrust of ball screw or pull transfer on support.
Claims (2)
1. a heavily loaded ball screw pair fittable slackening device, it is characterized in that, it comprises: synchronous pulley (3), screw set (6), two angular contact bearings (7), support (8), bearing cap (10), ball screw (11), slide plate (12), shoes (13), ball nut (14) and two guide rails (15); Wherein, described support (8) left side wall has and is positioned at central authorities and the bearing hole that communicates of left and right, and two angular contact bearings (7) are coordinated by machinery and are arranged in this bearing hole, and have step on the left of bearing hole, angular contact bearing (7) left side, outer ring is close to step side; Ball screw (11) is arranged in angular contact bearing (7) by machinery cooperation, and through two angular contact bearing (7) inner rings, ball screw (11) has the shaft shoulder, is close to the right side of angular contact bearing (7) inner ring on the left of the shaft shoulder; On the right side of support (8) bearing hole, bearing cap (10) is housed, there is step hole in bearing cap (10) left side; With screw by fastening for bearing cap (10) the right being arranged on support (8) left side wall; In the left side of support (8) bearing hole, have screw set (6), screw set (6) inner circle is installed on ball screw (11) by machinery cooperation; Screw set (6) right flank is close to the left side of angular contact bearing (7) inner ring; Screw set (6) left surface is close to the right side of synchronous pulley (3); And the left side of synchronous pulley (3) compresses with nut (1); The internal thread of nut (1) and the external thread rotary of ball screw (11) left end are combined; Support (8) is provided with two parallel guide rails (15), slide plate (12) has center hole, is a circle boss around center hole; Slide plate (12) is arranged on two guide rails (15) of support (8) by two shoes (13); Ball nut (14) screw thread is screwed on ball screw (11), and ball nut (14) is through the center hole of slide plate (12); Ball nut (14) has flange, and the left surface of flange right flank and slide plate (12) boss is fitted, and is arranged on slide plate (12) by screw fastening for ball nut (14); Synchronous pulley (3) is arranged on ball screw (11) left end, is connected between synchronous pulley (3) with ball screw (11) with key (2); Seal ring (5) is housed on the left of the bearing hole on support (8), is fixed on support (8) with pressure ring (4) by seal ring (5), the inner circle of seal ring (5) is fitted on the cylindrical of screw set (6); Have bearing cap (10) on the right side of bearing hole on support (8), bearing cap (10) inner circle is equipped with seal ring, and the inner circle of seal ring is fitted on the cylindrical of ball screw (11).
2. heavily loaded ball screw pair fittable slackening device according to claim 1, it is characterized in that, rubber washer (9) is had between bearing cap (10) and support (8), this packing ring can seal, the axial position of bearing cap (10) can be regulated simultaneously according to the degree of tightness of screw, make bearing cap (10) left end face be close to the right side of angular contact bearing (7) outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565925.1A CN103335080B (en) | 2012-12-23 | 2012-12-23 | A kind of heavily loaded ball screw pair fittable slackening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565925.1A CN103335080B (en) | 2012-12-23 | 2012-12-23 | A kind of heavily loaded ball screw pair fittable slackening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103335080A CN103335080A (en) | 2013-10-02 |
| CN103335080B true CN103335080B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210565925.1A Expired - Fee Related CN103335080B (en) | 2012-12-23 | 2012-12-23 | A kind of heavily loaded ball screw pair fittable slackening device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106838181B (en) * | 2015-12-07 | 2019-03-22 | 上海新跃仪表厂 | A kind of high rigidity transmission mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716010U (en) * | 2010-01-26 | 2011-01-19 | 南通大学 | Combination drive semi-closed loop precision positioning system |
| CN201907222U (en) * | 2010-11-24 | 2011-07-27 | 南京东部精密机械有限公司 | Servo feeder of full-automatic dry powder press |
| CN102151844A (en) * | 2011-02-24 | 2011-08-17 | 西南科技大学 | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009222145A (en) * | 2008-03-17 | 2009-10-01 | Ntn Corp | Multi-row rolling bearing |
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- 2012-12-23 CN CN201210565925.1A patent/CN103335080B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716010U (en) * | 2010-01-26 | 2011-01-19 | 南通大学 | Combination drive semi-closed loop precision positioning system |
| CN201907222U (en) * | 2010-11-24 | 2011-07-27 | 南京东部精密机械有限公司 | Servo feeder of full-automatic dry powder press |
| CN102151844A (en) * | 2011-02-24 | 2011-08-17 | 西南科技大学 | Numerical control turning method and turning device for concentric waney symmetrically-distributed arcs |
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| CN103335080A (en) | 2013-10-02 |
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Granted publication date: 20160120 Termination date: 20191223 |