CN202877995U - Double nut driven type ball screw assembly feeding mechanism - Google Patents
Double nut driven type ball screw assembly feeding mechanism Download PDFInfo
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- CN202877995U CN202877995U CN 201220471499 CN201220471499U CN202877995U CN 202877995 U CN202877995 U CN 202877995U CN 201220471499 CN201220471499 CN 201220471499 CN 201220471499 U CN201220471499 U CN 201220471499U CN 202877995 U CN202877995 U CN 202877995U
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Abstract
The utility model discloses a double nut driven type ball screw assembly feeding mechanism which comprises a driving nut, a pre-tightening nut, a bearing base seat and a lead screw. A left end ball bearing and a right end ball bearing are respectively arranged in an inner hole of the bearing base seat, an outer shaft neck of the driving nut is matched with an inner hole of an inner ring of the right end ball bearing, and an outer shaft neck of the pre-tightening nut is matched with an inner ring of the left ball bearing. The driving nut and the pre-tightening nut are respectively matched with the lead screw, a pre-tightening mechanism used for eliminating axial clearance is arranged between the driving nut and the pre-tightening nut, and the driving nut is connected with the pre-tightening nut through the pre-tightening mechanism. One end of the driving nut is connected with an output end of a power mechanism. The pre-tightening mechanism comprises connecting keys and gaskets. The gaskets are arranged on the lead screw which is arranged between the driving nut and the pre-tightening nut, key grooves are formed in the driving nut and the pre-tightening nut, and the connecting keys are connected with the key grooves in a matching mode. The double nut driven type ball screw assembly feeding mechanism can be widely applied to high-grade high precision, advanced and large special-purpose equipment of digital control planer type milling machines, floor-type boring, large pentahedron processing center and the like.
Description
Technical field
The utility model relates to field of mechanical technique, relates in particular to the driving ball screw assembly, feed mechanism of a kind of double nut.
Background technology
Along with country promotes domestic demand, and the needs of the industry developments such as nuclear power, wind-powered electricity generation, boats and ships, high ferro, the large aircraft of Aero-Space, China NC Machine present to large-scale, at a high speed, low noise, the quick development trend of response.Numerical control gantry mill, a collection of high-grade, precision and advanced, the large-scale special equipments such as numerical control floor boring, large-scale pentahedron machining center in the urgent need to large-scale, the load-carrying rolling functional part is supporting with it, this is just indicating that large-scale, load-carrying rolling functional part is entering a busy season of demands.When traditional " leading screw rotation-nut moves " type ball screw assembly, level was installed, because required ball-screw synetion leading screw self gravitation is large, flexural deformation is large, rotating inertia force was large, caused that energy consumption must strengthen, serious vibration., one of them main thermal source of becoming ball screw assembly, large because of the high speed rotary grinding between leading screw and spring bearing simultaneously, temperature rise is serious during the leading screw High Rotation Speed, flexural deformation, thermal deformation and the cutting load distortion etc. that produce because of leading screw deadweight, temperature rise have caused machine tool accuracy and have had a strong impact on, thereby cause that the equipment high speed performance is poor, precision is low, poor rigidity, noise be large.Ball-screw synetion leading screw whirling vibration severity, temperature rise and the distortion of existing structure form are serious, have affected the raising of the performance indications such as machine tool high speed, high accuracy, high rigidity.
Summary of the invention
The purpose of this utility model is exactly large, the serious vibration of energy consumption that exists in order to solve prior art, temperature rise is serious during the leading screw High Rotation Speed, and flexural deformation, thermal deformation and the cutting load distortion etc. that produce because of leading screw deadweight, temperature rise cause that the equipment high speed performance is poor, precision is low, poor rigidity, problem that noise is large; Provide a kind of double nut driving ball screw assembly, feed mechanism; Can be widely used in numerical control gantry mill, high-grade, precision and advanced, the large-scale special equipments such as numerical control floor boring, large-scale pentahedron machining center.
To achieve these goals, the utility model adopts following technical scheme:
The driving ball screw assembly, feed mechanism of a kind of double nut, comprise drive nut, pre-load nut, bearing base, leading screw, be respectively equipped with the left end ball bearing in the endoporus of bearing base, the right-hand member ball bearing, the outer axle journal of drive nut cooperates with the endoporus of the inner ring of right-hand member ball bearing, the outer axle journal of pre-load nut cooperates with left end ball bearing endoporus, drive nut, pre-load nut cooperates with leading screw respectively, be provided with the pre-tightening mechanism of eliminating end play between drive nut and the pre-load nut, drive nut is connected by pre-tightening mechanism with pre-load nut, and an end of drive nut is connected with the actuating unit output.
Described pre-tightening mechanism comprises connecting key, pad, and described pad is located on the leading screw between drive nut and the pre-load nut, and drive nut, pre-load nut are provided with keyway, and described drive nut, pre-load nut are connected by connecting key and keyway.Regulate distance between drive nut and pre-load nut by the thickness of adjusting pad, thereby reach the ball screw assembly, pretension, eliminate the purpose of end play.
Described actuating unit output is provided with synchronous pulley or gear, and described synchronous pulley or gear are connected with drive nut.
Described drive nut is connected with synchronous pulley or gear by bolt.
Described left end ball bearing, right-hand member ball bearing are angular contact ball bearing.
The outer face of described left end ball bearing is provided with the left bearing end cap, the outer face of right-hand member ball bearing is provided with the right bearing end cap, described left bearing end cap cylindrical, right bearing end cap cylindrical cooperate with the bearing base endoporus, and described left bearing end cap, right bearing end cap and bearing base cooperation place are respectively equipped with left sealing ring, right sealing ring.
Be provided with outer sleeve between the outer ring of the outer ring of described right-hand member ball bearing and left end ball bearing, the cylindrical of outer sleeve cooperates with the endoporus of bearing base, be provided with inner sleeve between the inner ring of the inner ring of described right-hand member ball bearing and left end ball bearing, the endoporus of inner sleeve cooperates with the cylindrical of drive nut, pre-load nut respectively.
Described leading screw is respectively equipped with dust ring with the outer end that drive nut, pre-load nut cooperate, and dust ring is located in the groove that drive nut, pre-load nut offer.
Described leading screw is large lead screw.
The utility model operation principle: the utility model comprises drive nut, pre-load nut, bearing base, leading screw, be respectively equipped with the left end ball bearing in the endoporus of bearing base, the right-hand member ball bearing, the outer axle journal of drive nut cooperates with the endoporus of the inner ring of right-hand member ball bearing, the outer axle journal of pre-load nut cooperates with left end ball bearing endoporus, drive nut, pre-load nut cooperates with leading screw respectively, be provided with the pre-tightening mechanism of eliminating end play between drive nut and the pre-load nut, drive nut is connected by pre-tightening mechanism with pre-load nut, and an end of drive nut is connected with the actuating unit output.Described pre-tightening mechanism comprises connecting key, pad, and described pad is assemblied between drive nut and the pre-load nut, and drive nut, pre-load nut are provided with keyway, and described drive nut, pre-load nut are connected by connecting key and keyway.Regulate distance between drive nut and pre-load nut by the thickness of adjusting pad, thereby reach the ball screw assembly, pretension, eliminate the purpose of end play.Bearing base is connected with the workbench of lathe during use, and leading screw is fixed on the lathe.Angular contact ball bearing inner ring is installed on the outer axle journal of drive nut, one end and the synchronous pulley of drive nut are bolted, motor-driven power is introduced by synchronous pulley, the rotation of drive drive nut, when rotating, does drive nut rectilinear motion, drive nut rotation rear overhang angle contact ball bearing drives bearing base and does rectilinear motion, does rectilinear motion thereby drive workbench.Described pre-tightening mechanism comprises connecting key, pad, and described pad is located on the leading screw between drive nut and the pre-load nut, and connecting key is connected with drive nut, pre-load nut respectively.Regulate distance between drive nut and pre-load nut by the thickness of adjusting pad, thereby reach the ball screw assembly, pretension, eliminate the purpose of end play.Bearing adopts angular contact ball bearing, and bearing is standard rolling bearing, and versatility is good.Adopt leading screw, realize high-speed motion.
The beneficial effects of the utility model:
The vibration that has produced because of leading screw High Rotation Speed inertia force when 1) having overcome existing ball-screw subtask has improved stable working, transmission accuracy, has reduced noise;
2) eliminate the frictional heat source of the rolling support at leading screw two ends, reduced the temperature rise of lead screw transmission process, reduced thermal deformation and hot error, improved the precision of lathe;
3) transferred to by the ball-screw two ends on the nut body of compact conformation because of bearings, it is large that spring bearing becomes, and axial rigidity is greatly improved;
4) two supports mode and spacing are to the restriction of critical speed Nc when having avoided the leading screw rotation, and the Nc value can be higher, improved high speed, be conducive to high-speed driving;
5) exposed leading screw is motionless in length range, thereby has increased security;
6) rotary inertia is little, saves the energy, for having the green transmission product of broad prospect of application;
7) simple installation is installed in leading screw on the supporting seat, need not bearing;
8) many nuts can be installed on the same lead screw shaft drives.
Description of drawings
Fig. 1 is assembly structure schematic diagram of the present utility model;
Fig. 2 is cross-sectional view of the present utility model;
Fig. 3 is drive nut structural representation of the present utility model;
Fig. 4 is pre-load nut structural representation of the present utility model;
Fig. 5 is bearing seat structure schematic diagram of the present utility model;
Among the figure, 1. bearing base, 2. right bearing end cap, 3. right sealing ring, 4. drive nut, 5. outer sleeve, 6. right-hand member ball bearing, 7. inner sleeve, 8. left sealing ring, 9. left bearing end cap, 10. pre-load nut, 11. leading screws, 12 dust rings, 13. connecting keys, 14. pads, 15. the left end ball bearing, 16. synchronous pulleys.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
The driving ball screw assembly, feed mechanism of a kind of double nut comprises pre-load nut 10, bearing base 1, and drive nut 4, leading screw 11 is respectively equipped with left end ball bearing 15, right-hand member ball bearing 6 in the endoporus of bearing base 1,
The outer axle journal of drive nut 4 cooperates with the endoporus of the inner ring of right-hand member ball bearing 6, the outer axle journal of pre-load nut 10 cooperates with left end ball bearing 15 endoporus, drive nut 4, pre-load nut 10 cooperate with leading screw 11 respectively, be provided with the pre-tightening mechanism of eliminating the two end play between drive nut 4 and the pre-load nut 10, drive nut 4 and pre-load nut 10 are connected by pre-tightening mechanism, and an end of drive nut 4 is connected with the actuating unit output.Described drive nut 4 is connected with synchronous pulley 16 or gear by bolt, and synchronous pulley 16 or gear are connected with the actuating unit output.
Described pre-tightening mechanism comprises connecting key 13, pad 14, described pad 14 is located on the leading screw 11 between drive nut 4 and the pre-load nut 10, drive nut 4, pre-load nut 10 are provided with keyway, and described drive nut 4, pre-load nut 10 are connected by connecting key 13 and keyway.Regulate the distance of 10 of drive nut 4 and pre-load nuts by the thickness of adjusting pad 14, thereby reach the ball screw assembly, pretension, eliminate the purpose of end play.
Described left end ball bearing 15, right-hand member ball bearing 6 are angular contact ball bearing.The outer face of described left end ball bearing 15 is provided with left bearing end cap 9, and the outer face of right-hand member ball bearing 6 is provided with right bearing end cap 2.Bearing base 1 is connected with the workbench of lathe during use, and leading screw is fixed on the lathe bed.
The outer face of described left end ball bearing 15 is provided with left bearing end cap 9, the outer face of right-hand member ball bearing 6 is provided with right bearing end cap 2, described left bearing end cap 9 cylindricals, right bearing end cap 2 cylindricals cooperate with bearing base 1 endoporus, and described left bearing end cap 9, right bearing end cap 2 are respectively equipped with left sealing ring 8, right sealing ring 3 with bearing base 1 cooperation place.
Be provided with outer sleeve 5 between the outer ring of the outer ring of described right-hand member ball bearing 6 and left end ball bearing 15, the cylindrical of outer sleeve 5 cooperates with the endoporus of bearing base 1, be provided with inner sleeve 7 between the inner ring of the inner ring of described right-hand member ball bearing 6 and left end ball bearing 15, the endoporus of inner sleeve 7 cooperates with the cylindrical of drive nut 4, pre-load nut 10 respectively.
The outer end that described leading screw 11 cooperates with drive nut 4, pre-load nut 10 is respectively equipped with dust ring 12, and dust ring 12 is located in the groove that drive nut 4, pre-load nut 10 offer.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (9)
1. driving ball screw assembly, feed mechanism of double nut, it is characterized in that, comprise drive nut, pre-load nut, bearing base, leading screw, be respectively equipped with the left end ball bearing in the endoporus of bearing base, the right-hand member ball bearing, the outer axle journal of drive nut cooperates with the endoporus of the inner ring of right-hand member ball bearing, the outer axle journal of pre-load nut cooperates drive nut with left end ball bearing endoporus, pre-load nut cooperates with leading screw respectively, is provided with the pre-tightening mechanism of eliminating end play between drive nut and the pre-load nut, drive nut is connected by pre-tightening mechanism with pre-load nut, and an end of drive nut is connected with the actuating unit output.
2. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1, it is characterized in that, described pre-tightening mechanism comprises connecting key, pad, described pad is located on the leading screw between drive nut and the pre-load nut, described drive nut, pre-load nut are provided with keyway, and described drive nut, pre-load nut are connected by connecting key and keyway.
3. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1 is characterized in that, described actuating unit output is provided with synchronous pulley or gear, and described synchronous pulley or gear are connected with drive nut.
4. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 3 is characterized in that, described drive nut is connected with synchronous pulley or gear by bolt.
5. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1 is characterized in that, described left end ball bearing, right-hand member ball bearing are angular contact ball bearing.
6. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1, it is characterized in that, the outer face of described left end ball bearing is provided with the left bearing end cap, the outer face of right-hand member ball bearing is provided with the right bearing end cap, described left bearing end cap cylindrical, right bearing end cap cylindrical cooperate with the bearing base endoporus, and described left bearing end cap, right bearing end cap and bearing base cooperation place are respectively equipped with left sealing ring, right sealing ring.
7. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1, it is characterized in that, be provided with outer sleeve between the outer ring of the outer ring of described right-hand member ball bearing and left end ball bearing, the cylindrical of outer sleeve cooperates with the endoporus of bearing base, be provided with inner sleeve between the inner ring of the inner ring of described right-hand member ball bearing and left end ball bearing, the endoporus of inner sleeve cooperates with the cylindrical of drive nut, pre-load nut respectively.
8. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1 is characterized in that, described leading screw is respectively equipped with dust ring with the outer end that drive nut, pre-load nut cooperate, and dust ring is located in the groove that drive nut, pre-load nut offer.
9. the driving ball screw assembly, feed mechanism of double nut as claimed in claim 1 is characterized in that, described leading screw is large lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471499 CN202877995U (en) | 2012-09-14 | 2012-09-14 | Double nut driven type ball screw assembly feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471499 CN202877995U (en) | 2012-09-14 | 2012-09-14 | Double nut driven type ball screw assembly feeding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202877995U true CN202877995U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220471499 Expired - Fee Related CN202877995U (en) | 2012-09-14 | 2012-09-14 | Double nut driven type ball screw assembly feeding mechanism |
Country Status (1)
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|---|---|
| CN (1) | CN202877995U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029071A (en) * | 2014-06-03 | 2014-09-10 | 山东威达重工股份有限公司 | Guide rail and ball screw structure for lifting of both cross beam and horizontal boring and milling heads at two sides |
| CN105290859A (en) * | 2014-07-22 | 2016-02-03 | 陆如东 | Machine tool screw rod fixing base |
| CN105317956A (en) * | 2015-11-30 | 2016-02-10 | 深圳市创世纪机械有限公司 | Screw lubricating and sealing structure of machining centre |
| CN105479238A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw lock nut anti-loosen structure |
| CN105479237A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw prestretching structure |
| CN105910816A (en) * | 2016-05-05 | 2016-08-31 | 西安交通大学 | High-speed ball screw pair double-nut pretightening force control device and method |
| CN106641157A (en) * | 2017-02-15 | 2017-05-10 | 池州市邦鼐机电科技有限公司 | Screw-driven novel joint speed reducer |
| CN106763613A (en) * | 2017-02-15 | 2017-05-31 | 池州市邦鼐机电科技有限公司 | A kind of knuckle reductor |
| CN107498365A (en) * | 2017-09-30 | 2017-12-22 | 宇环数控机床股份有限公司 | A kind of double nut precise ball screw pair |
| CN109826917A (en) * | 2019-01-21 | 2019-05-31 | 陕西科技大学 | A kind of double-shaft spiral synchronous feeding mechanism based on differential principle |
| CN110273992A (en) * | 2018-03-15 | 2019-09-24 | 江苏国全自动化科技有限公司 | Ball nut rotates component and its installation method |
| CN110578780A (en) * | 2019-08-07 | 2019-12-17 | 山东大学 | Dual-drive sliding screw transmission pair and micro-feeding device formed by same |
| CN110594379A (en) * | 2019-08-07 | 2019-12-20 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
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2012
- 2012-09-14 CN CN 201220471499 patent/CN202877995U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029071A (en) * | 2014-06-03 | 2014-09-10 | 山东威达重工股份有限公司 | Guide rail and ball screw structure for lifting of both cross beam and horizontal boring and milling heads at two sides |
| CN105290859A (en) * | 2014-07-22 | 2016-02-03 | 陆如东 | Machine tool screw rod fixing base |
| CN105317956A (en) * | 2015-11-30 | 2016-02-10 | 深圳市创世纪机械有限公司 | Screw lubricating and sealing structure of machining centre |
| CN105479238A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw lock nut anti-loosen structure |
| CN105479237A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw prestretching structure |
| CN105910816A (en) * | 2016-05-05 | 2016-08-31 | 西安交通大学 | High-speed ball screw pair double-nut pretightening force control device and method |
| CN105910816B (en) * | 2016-05-05 | 2018-06-12 | 西安交通大学 | A kind of high-speed ball screw pair double nut pretightning force control device and method |
| CN106641157B (en) * | 2017-02-15 | 2023-11-17 | 广州弥优机床有限公司 | Novel joint speed reducer of screw drive formula |
| CN106641157A (en) * | 2017-02-15 | 2017-05-10 | 池州市邦鼐机电科技有限公司 | Screw-driven novel joint speed reducer |
| CN106763613A (en) * | 2017-02-15 | 2017-05-31 | 池州市邦鼐机电科技有限公司 | A kind of knuckle reductor |
| CN107498365A (en) * | 2017-09-30 | 2017-12-22 | 宇环数控机床股份有限公司 | A kind of double nut precise ball screw pair |
| CN107498365B (en) * | 2017-09-30 | 2024-03-15 | 宇环数控机床股份有限公司 | Double-nut precise ball screw pair |
| CN110273992A (en) * | 2018-03-15 | 2019-09-24 | 江苏国全自动化科技有限公司 | Ball nut rotates component and its installation method |
| CN109826917B (en) * | 2019-01-21 | 2022-04-29 | 陕西科技大学 | Double-shaft spiral synchronous feeding mechanism based on differential principle |
| CN109826917A (en) * | 2019-01-21 | 2019-05-31 | 陕西科技大学 | A kind of double-shaft spiral synchronous feeding mechanism based on differential principle |
| CN110578780A (en) * | 2019-08-07 | 2019-12-17 | 山东大学 | Dual-drive sliding screw transmission pair and micro-feeding device formed by same |
| CN110594379A (en) * | 2019-08-07 | 2019-12-20 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
| CN110594379B (en) * | 2019-08-07 | 2021-08-31 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
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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: 20130417 Termination date: 20140914 |
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| EXPY | Termination of patent right or utility model |