CN101929533A - High-speed and low-noise precise ball screw pair - Google Patents
High-speed and low-noise precise ball screw pair Download PDFInfo
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- CN101929533A CN101929533A CN 201010274980 CN201010274980A CN101929533A CN 101929533 A CN101929533 A CN 101929533A CN 201010274980 CN201010274980 CN 201010274980 CN 201010274980 A CN201010274980 A CN 201010274980A CN 101929533 A CN101929533 A CN 101929533A
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- ball
- ball screw
- elastic buffer
- nut
- raceway
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Abstract
The invention discloses a high-speed and low-noise precise ball screw pair which consists of a ball screw, a ball nut, balls, an elastic buffer, an elastic reverse damper, a nut shell and a seal ring, wherein the ball screw is sheathed with the ball nut, roller paths are arranged on an outer circle of the ball screw and an inner circle of the ball nut, and the roller paths are internally provided with the balls; and two ends of the ball nut are provided with reverse grooves, and each reverse groove is provided with the elastic buffer, the elastic reverse damper and a through ball return channel respectively. Under a high-speed motion condition, the high-speed precise ball screw pair structure can effectively overcome shock and vibration generated in the returning process of the ball in the rolling and autorotation directions and absorb a large quantity of frictional heat generated in the motion of the ball rolls, thus being capable of solving the problems of noise, vibration and heating of the precise ball screw pair under the high-speed motion condition.
Description
Technical field:
The present invention relates to a kind of ball screw auxiliary structure of the present invention, relate in particular to the precise ball screw pair under a kind of condition that runs up.The present invention can solve noise, vibration and the heating problem of the precise ball screw pair under the condition of running up.
Background technique:
Along with engineering goods at a high speed, efficient, automation direction development, industrial robot, numerical control machining center and electromechanical integration machinery etc., its feeding actuating speed improves constantly.Location, high-speed cutting, high-speed driving propose brand-new requirement to the rolling function parts fast.
Existing ball screw pair nut ball returns in the structure, although adopted the tangential or oval transition method of circular arc to design, solved the motion problems of ball screw pair under the middle low-speed conditions, but under high-speed case, the kinematic screw groove corner angle of this structure ball is big, transition is unsmooth, has caused ball first derivative and second dervative on rotating direction continuous, and three order derivatives are discontinuous; Simultaneously, first derivative is continuous on sense of rotation, and second dervative and three order derivatives are discontinuous, thereby, cause the ball bumpy motion, produce shock and vibration, and a large amount of frictional heats, to the very big restriction of increase generation of helical pitch and rotating speed, also limited the high speed bearing capacity of ball screw pair.
Therefore, ball screw auxiliary structure of the present invention can overcome the shock and vibration that the return course of ball on rolling and sense of rotation brings effectively, simultaneously, absorbs the frictional heat that is produced when a large amount of balls roll, increase bearing capacity, and can realize the speed up and the highi degree of accuracy operation of ball screw pair.
Summary of the invention:
The present invention seeks to disclose a kind of novel high speed precise ball screw pair structure, the vibration in the time of can reducing the ball screw secondary motion realizes speed up, reduce temperature rise, the ability with bearing load is big, stable drive, noise is little, improves kinematic accuracy, advantages such as compact structure.
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of high-speed and low-noise precise ball screw pair is provided, and this ball screw pair is made up of ball screw 1, ball nut 3, ball 6, elastic buffer 4, elasticity back damper 5, nut shell 8 and seal ring 9; Be set with ball nut 3 on the described ball screw 1, the interior circle of the cylindrical of ball screw 1 and ball nut 3 is provided with raceway 2, is provided with ball 6 in the raceway 2; Described ball nut 3 two ends are provided with the back tank, the ball return passage 7 that is respectively arranged with flexible buffer 4, elasticity back damper 5 and runs through in each back tank; In the described ball screw pair movement process, ball 6 arrives the elastic buffer 4 and the property back damper 5 of ball nut 3 the other ends respectively by the raceway 2 between ball screw 1 and the ball nut 3, elastic buffer 4, elasticity back damper 5 and the ball return passage 7 that runs through; Then, enter the raceway 2 between ball screw 1 and the ball nut 3 once more, form ball 6 complete rollings and circulate; Described seal ring 9 is arranged on ball nut 3 internal surface two ends, between ball screw 1 and the ball nut 3.
Described elastic buffer 4 is made up of elastic buffer piece 11, spring 12 and rotating position axle 10; Described elastic buffer 4 positions are the intersection of ball road 2 and elasticity back damper 5, and are arranged on the center line raceway tangential direction of back tank; Elastic buffer piece 4 is under the effect of spring 12, to the raceway micro-distance that tilts; Under the high-speed motion situation, described ball 6 is behind the raceway 2 that passes through between ball screw 1 and the ball nut 3, enter before the return passage 7, ball 6 at first touches elastic buffer piece 11 on rotating direction, after spring 12 power that overcome the elastic buffer piece, ball 6 is pushed elastic buffer piece 11 open and is entered into elasticity back damper 6.
Described elasticity back damper 5 is made up of the lubricated gas connection 16 of elastic damping piece 14, damping block fitting seat 13 and damping; Described elastic damping piece 14 circumferential surfaces are provided with many minisize dampings hole 15; Described elasticity back damper 5 positions are between elastic buffer 4 and the return passage 7, and are arranged on the center line raceway tangential direction of back tank; Under the high-speed motion situation, described ball 6 is by elasticity back damper 5 time, and the lubricated gas of damping sprays to ball 6 by the minisize damping hole 15 on the elasticity back damper.
High speed and precision ball screw auxiliary structure of the present invention is under the high-speed motion situation, can overcome the shock and vibration that bring in the return course of ball on rolling and sense of rotation effectively, simultaneously, absorb the frictional heat that is produced when a large amount of balls roll, therefore, the present invention can solve noise, vibration and the heating problem of the precise ball screw pair under the condition of running up.
Description of drawings:
Fig. 1 is a high speed and precision ball screw pair structural representation of the present invention;
Fig. 2 is an elastic buffer principle schematic in the high speed and precision ball screw pair of the present invention;
Fig. 3 is an elasticity back damper principle schematic in the high speed and precision ball screw pair of the present invention.
Wherein: 1 is ball screw; 2 is raceway; 3 is ball nut; 4 is elastic buffer; 5 is elasticity back damper; 6 is ball; 7 is the ball return passage; 8 is nut shell; 9 is seal ring; 10 is the rotating position axle; 11 is the elastic buffer piece; 12 is spring; 13 is the damping block fitting seat; 14 is the elastic damping piece; 15 is the minisize damping hole; 16 are the lubricated gas connection of damping.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
With reference to Fig. 1, the novel high speed precise ball screw pair is made up of ball screw 1, ball nut 3, ball 6, elastic buffer 4, elasticity back damper 5, nut shell 8 and seal ring 9.Be set with ball nut 3 on ball screw 1, the interior circle of the cylindrical of ball screw 1 and ball nut 3 is provided with raceway 2, is provided with ball 5 in the raceway 2.Ball nut 3 two ends are provided with the back tank, the ball return passage 7 that is respectively arranged with flexible buffer 4, elasticity back damper 5 and runs through in each back tank.In the ball screw pair movement process, ball 6 arrives the elastic buffer 4 and the property back damper 5 of ball nut 3 the other ends respectively by the raceway 2 between ball screw 1 and the ball nut 3, elastic buffer 4, elasticity back damper 5 and the ball return passage 7 that runs through; Then, enter the raceway 2 between ball screw 1 and the ball nut 3 once more, form ball 6 complete rollings and circulate.Seal ring 9 is arranged on ball nut 3 internal surface two ends, between ball screw 1 and the ball nut 3, plays the sealing and dustproof effect.
With reference to Fig. 2, elastic buffer 4 is made up of elastic buffer piece 11, spring 12 and rotating position axle 10.Elastic buffer 4 positions are the intersection of ball road 2 and elasticity back damper 5, and are arranged on the center line raceway tangential direction of back tank; Elastic buffer piece 4 is under the effect of spring 12, to the raceway micro-distance that tilts.Under the high-speed motion situation, described ball 6 is behind the raceway 2 that passes through between ball screw 1 and the ball nut 3, enter before the return passage 7, ball 6 at first touches elastic buffer piece 11 on rotating direction, after spring 12 power that overcome the elastic buffer piece, ball 6 is pushed elastic buffer piece 11 open and is entered into elasticity back damper 6, changes the shock and vibration that bring because of moving direction thereby suppressed ball 6, play the elastic buffer effect, effectively improved the high-speed smooth of ball screw pair.
With reference to Fig. 3, elasticity back damper 5 is made up of the lubricated gas connection 16 of elastic damping piece 14, damping block fitting seat 13 and damping.Elastic damping piece 14 circumferential surfaces are provided with many minisize dampings hole 15; Elasticity back damper 5 positions are between elastic buffer 4 and the return passage 7, and are arranged on the center line raceway tangential direction of back tank.Under the high-speed motion situation, described ball 6 is by elasticity back damper 5 time, the lubricated gas of damping sprays to ball 6 by the minisize damping hole 15 on the elasticity back damper, suppress ball 6 and changed the shock and vibration that bring because of sense of rotation, simultaneously, take away the heat on ball 6 and the ball nut 3, prevented the Displacement error that thermal distortion brings, thereby guaranteed kinematic accuracy and the robust motion of novel high speed precise ball screw pair under the condition of running up.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (3)
1. high-speed and low-noise precise ball screw pair, it is characterized in that: this ball screw pair is made up of ball screw 1, ball nut 3, ball 6, elastic buffer 4, elasticity back damper 5, nut shell 8 and seal ring 9; Be set with ball nut 3 on the described ball screw 1, the interior circle of the cylindrical of ball screw 1 and ball nut 3 is provided with raceway 2, is provided with ball 6 in the raceway 2; Described ball nut 3 two ends are provided with the back tank, the ball return passage 7 that is respectively arranged with flexible buffer 4, elasticity back damper 5 and runs through in each back tank; In the described ball screw pair movement process, ball 6 arrives the elastic buffer 4 and the property back damper 5 of ball nut 3 the other ends respectively by the raceway 2 between ball screw 1 and the ball nut 3, elastic buffer 4, elasticity back damper 5 and the ball return passage 7 that runs through; Then, enter the raceway 2 between ball screw 1 and the ball nut 3 once more, form ball 6 complete rollings and circulate; Described seal ring 9 is arranged on ball nut 3 internal surface two ends, between ball screw 1 and the ball nut 3.
2. high-speed and low-noise precise ball screw pair according to claim 1, it is characterized in that: described elastic buffer 4 is made up of elastic buffer piece 11, spring 12 and rotating position axle 10; Described elastic buffer 4 positions are the intersection of ball road 2 and elasticity back damper 5, and are arranged on the center line raceway tangential direction of back tank; Elastic buffer piece 4 is under the effect of spring 12, to the raceway micro-distance that tilts; Under the high-speed motion situation, described ball 6 is behind the raceway 2 that passes through between ball screw 1 and the ball nut 3, enter before the return passage 7, ball 6 at first touches elastic buffer piece 11 on rotating direction, after spring 12 power that overcome the elastic buffer piece, ball 6 is pushed elastic buffer piece 11 open and is entered into elasticity back damper 6.
3. high-speed and low-noise precise ball screw pair according to claim 1, it is characterized in that: described elasticity back damper 5 is made up of the lubricated gas connection 16 of elastic damping piece 14, damping block fitting seat 13 and damping; Described elastic damping piece 14 circumferential surfaces are provided with many minisize dampings hole 15; Described elasticity back damper 5 positions are between elastic buffer 4 and the return passage 7, and are arranged on the center line raceway tangential direction of back tank; Under the high-speed motion situation, described ball 6 is by elasticity back damper 5 time, and the lubricated gas of damping sprays to ball 6 by the minisize damping hole 15 on the elasticity back damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102749806A CN101929533B (en) | 2010-09-07 | 2010-09-07 | High-speed and low-noise precise ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102749806A CN101929533B (en) | 2010-09-07 | 2010-09-07 | High-speed and low-noise precise ball screw pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929533A true CN101929533A (en) | 2010-12-29 |
| CN101929533B CN101929533B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102749806A Expired - Fee Related CN101929533B (en) | 2010-09-07 | 2010-09-07 | High-speed and low-noise precise ball screw pair |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867676A (en) * | 2014-02-26 | 2014-06-18 | 北京工业大学 | Ball screw assembly structure based on friction damping |
| CN104033557A (en) * | 2014-06-25 | 2014-09-10 | 西安交通大学 | Rectilinear motion retarding mechanism with spiral ball raceways |
| CN106641150A (en) * | 2017-02-25 | 2017-05-10 | 池州市弥优智能传动部件有限公司 | Series connection type micro ball joint |
| CN108916341A (en) * | 2018-08-07 | 2018-11-30 | 刘国青 | A kind of flexibility steel ball commutation cycle device |
| CN109915557A (en) * | 2019-04-03 | 2019-06-21 | 南昌汇达知识产权有限公司 | A kind of bearing-type reciprocating screw rod structure reducing abrasion |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351442B (en) * | 2015-11-27 | 2017-07-28 | 江苏铁科新材料股份有限公司 | A kind of used appearance with wideband damping property and rubber composite vibration reducing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905534A (en) * | 1987-04-29 | 1990-03-06 | Waybol, S.A. | Lead screw with balls recirculating by deflector with half-spherical supports |
| US5993064A (en) * | 1996-09-17 | 1999-11-30 | Thk Co., Ltd. | Ball connecting body, and linear guide device and ball screw device utilizing the ball connecting body |
| US6089117A (en) * | 1997-07-31 | 2000-07-18 | Thk Co., Ltd. | Ball screw device |
| DE102005007875A1 (en) * | 2005-02-21 | 2006-08-31 | Lee, Mao-Tu | Ballscrew muffling structure, has hollowed out set-in grooves correspondingly provided on holder such that roller rings are inserted along grooves into interior hole of holder, where roller rings totally cover periphery of screw |
-
2010
- 2010-09-07 CN CN2010102749806A patent/CN101929533B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905534A (en) * | 1987-04-29 | 1990-03-06 | Waybol, S.A. | Lead screw with balls recirculating by deflector with half-spherical supports |
| US5993064A (en) * | 1996-09-17 | 1999-11-30 | Thk Co., Ltd. | Ball connecting body, and linear guide device and ball screw device utilizing the ball connecting body |
| US6089117A (en) * | 1997-07-31 | 2000-07-18 | Thk Co., Ltd. | Ball screw device |
| DE102005007875A1 (en) * | 2005-02-21 | 2006-08-31 | Lee, Mao-Tu | Ballscrew muffling structure, has hollowed out set-in grooves correspondingly provided on holder such that roller rings are inserted along grooves into interior hole of holder, where roller rings totally cover periphery of screw |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867676A (en) * | 2014-02-26 | 2014-06-18 | 北京工业大学 | Ball screw assembly structure based on friction damping |
| CN104033557A (en) * | 2014-06-25 | 2014-09-10 | 西安交通大学 | Rectilinear motion retarding mechanism with spiral ball raceways |
| CN106641150A (en) * | 2017-02-25 | 2017-05-10 | 池州市弥优智能传动部件有限公司 | Series connection type micro ball joint |
| CN106641150B (en) * | 2017-02-25 | 2023-09-08 | 广州弥优机床有限公司 | Series miniature ball joint |
| CN108916341A (en) * | 2018-08-07 | 2018-11-30 | 刘国青 | A kind of flexibility steel ball commutation cycle device |
| CN108916341B (en) * | 2018-08-07 | 2021-07-02 | 刘国青 | Flexible steel ball reversing circulating device |
| CN109915557A (en) * | 2019-04-03 | 2019-06-21 | 南昌汇达知识产权有限公司 | A kind of bearing-type reciprocating screw rod structure reducing abrasion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101929533B (en) | 2012-05-23 |
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