CN103410940A - Rolling and sliding composite lead screw pair - Google Patents
Rolling and sliding composite lead screw pair Download PDFInfo
- Publication number
- CN103410940A CN103410940A CN2013103640630A CN201310364063A CN103410940A CN 103410940 A CN103410940 A CN 103410940A CN 2013103640630 A CN2013103640630 A CN 2013103640630A CN 201310364063 A CN201310364063 A CN 201310364063A CN 103410940 A CN103410940 A CN 103410940A
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- nut
- sliding
- rolling
- ball
- lead screw
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Abstract
The invention discloses a rolling and sliding composite lead screw pair. The rolling and sliding composite lead screw pair comprises a nut seat, wherein a rolling nut is fixedly connected on the nut seat and is internally connected with a ball screw by steel balls; the ball screw is also in threaded connection with a sliding nut which is fixedly connected with the nut seat; an adjusting pad is designed between the sliding nut and the nut seat; a gap is designed between the sliding nut and the nut seat.
Description
Technical field
The present invention relates to a kind of lathe, relate in particular to a kind of rolling, the compound lead screw pair of sliding.
Background technique
The feed mechanism of most of lathes is all straight line motion, its power source mostly is and rotatablely moves again, a kind of Linear feed mechanism the most frequently used on lathe is screw-nut body, different with purposes according to the precision of lathe, screw-nut body can be divided into Mechanism of Sliding Leadscrew Nut, ball-screw nut body and static-pressure screw nut mechanism three classes.When doing relative movement, the Mechanism of Sliding Leadscrew Nut screw pair produces the spiral of sliding friction, relatively simple for structure, the engagement of nut and screw rod is continuous, stable working, be easy to self-locking, but between screw thread, friction is large, wearing and tearing are large, efficiency is low (generally between 0.25 ~ 0.70, during self-locking, efficiency is less than 50%), low speed and fine setting easily produce and creep, and positioning precision and axial stiffness are poor, are not suitable for for high speed and high-power transmission; When ball-screw nut screw pair is done relative movement, produce the spiral of rolling friction, the surface friction drag of rolling screw is little, and transmission efficiency high (more than 90%), wear and tear little, and precision easily keeps, but complex structure, cost is high, can not self-locking.Rolling screw is mainly used in the occasion that transmission accuracy is had relatively high expectations.Static-pressure screw nut mechanism be by the static pressure application of principle in power screw, static-pressure screw nut mechanism surface friction drag is little, transmission efficiency high (can reach more than 90%), but complex structure, need oil supply system, be applicable to require in highi degree of accuracy, high efficiency important transmission, in the power screw as numerical control, precision machine tool, testing apparatus or automatic control system.
Summary of the invention
The purpose of this invention is to provide that a kind of transmission efficiency is high, rolling, the compound lead screw pair of sliding that can self-locking.
For achieving the above object, the technical solution used in the present invention is: a kind of rolling, the compound lead screw pair of sliding, comprise nut seat, on nut seat, be fixedly connected with ball nut, in ball nut, be connected with ball screw by steel ball, it is characterized in that: the sliding nut that also has been threaded on ball screw, sliding nut is fixedly connected with nut seat, between sliding nut and nut seat, be designed with spacer, be designed with gap between sliding nut and nut seat.
Advantageous effect of the present invention is: due to this structure of the present invention, so 1, transmission efficiency is high, can reach more than 90%, and lead screw pair response equivalent is high, low speed is without creeping;
2, by spacer, can be suitable to the ball pretension, reach high rigidity, and heating value is lower than ball screw pair, and can has auto-lock function;
3, adopt the ball transmitting torque, the life-span of lead screw pair is 4-10 times of slip screw, and positioning precision and repetitive positioning accuracy higher than lead screw.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In accompanying drawing: 1, ball nut; 2, steel ball; 3, nut seat; 4, sliding nut; 5, spacer; 6, ball screw.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
The present invention as shown in Figure 1, a kind of rolling, the compound lead screw pair of sliding, comprise nut seat 3, on nut seat 3, be fixedly connected with ball nut 1, in ball nut 1, be connected with ball screw 6 by steel ball 2, it is characterized in that: the sliding nut 4 that also has been threaded on ball screw 6, sliding nut 4 is fixedly connected with nut seat 3, between sliding nut 4 and nut seat 3, be designed with spacer 5, be designed with gap between sliding nut 4 and nut seat 3.In the present embodiment, described gap is 2mm.
Spacer can be in order to adjust the pretension amount between ball screw and two nuts, and spacer and sliding nut are mainly used in the secondary whole rigidity of adjusting screw and realize auto-lock function.During work, the ball screw transmitting torque mainly is converted into straight line motion by ball nut.
Claims (2)
1. a rolling, the compound lead screw pair of sliding, comprise nut seat (3), on nut seat (3), be fixedly connected with ball nut (1), in ball nut (1), be connected with ball screw (6) by steel ball (2), it is characterized in that: sliding nut (4) also has been threaded on ball screw (6), sliding nut (4) is fixedly connected with nut seat (3), between sliding nut (4) and nut seat (3), be designed with spacer (5), be designed with gap between sliding nut (4) and nut seat (3).
2. rolling according to claim 1, the compound lead screw pair of sliding is characterized in that: described gap is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103640630A CN103410940A (en) | 2013-08-20 | 2013-08-20 | Rolling and sliding composite lead screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103640630A CN103410940A (en) | 2013-08-20 | 2013-08-20 | Rolling and sliding composite lead screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103410940A true CN103410940A (en) | 2013-11-27 |
Family
ID=49603971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103640630A Pending CN103410940A (en) | 2013-08-20 | 2013-08-20 | Rolling and sliding composite lead screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843757A (en) * | 2018-09-06 | 2018-11-20 | 江苏品德机电科技有限公司 | A kind of rolling friction type lead screw |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447439A (en) * | 1945-12-12 | 1948-08-17 | Roy E Thompson | Self-locking screw |
| US3304794A (en) * | 1964-01-23 | 1967-02-21 | British Aircraft Corp Ltd | Mechanisms incorporating recirculating ball screw-jacks |
| DE4141460A1 (en) * | 1991-12-12 | 1993-06-17 | Mannesmann Ag | Pressure driven ram with piston and tubular piston rod - has sliding screw-bush placed axially beside ball-screw-bush, connected together by clutch pins |
| EP1052428A2 (en) * | 1999-05-14 | 2000-11-15 | Lucas Industries Limited | Screw actuator |
| CN201301945Y (en) * | 2009-03-31 | 2009-09-02 | 启东润泽机床附件有限公司 | Multi-path lubricating ball screw pair |
| CN101761619A (en) * | 2009-11-16 | 2010-06-30 | 江苏速升自动化装备系统工程有限公司 | Combined screw pair |
| CN101793313A (en) * | 2009-11-16 | 2010-08-04 | 江苏速升自动化装备系统工程有限公司 | Combined screw pair having screw rods with three functional areas |
| CN202132459U (en) * | 2011-06-24 | 2012-02-01 | 常州富丽康精密机械有限公司 | Double-nut gasket pre-tightened ball lead screw pair |
| CN102705464A (en) * | 2011-03-28 | 2012-10-03 | 陆向辉 | Double-nut gasket type internal circulating ball screw assembly |
| CN203442063U (en) * | 2013-08-20 | 2014-02-19 | 山东威达重工股份有限公司 | Rolling and sliding composite lead screw pair |
-
2013
- 2013-08-20 CN CN2013103640630A patent/CN103410940A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447439A (en) * | 1945-12-12 | 1948-08-17 | Roy E Thompson | Self-locking screw |
| US3304794A (en) * | 1964-01-23 | 1967-02-21 | British Aircraft Corp Ltd | Mechanisms incorporating recirculating ball screw-jacks |
| DE4141460A1 (en) * | 1991-12-12 | 1993-06-17 | Mannesmann Ag | Pressure driven ram with piston and tubular piston rod - has sliding screw-bush placed axially beside ball-screw-bush, connected together by clutch pins |
| EP1052428A2 (en) * | 1999-05-14 | 2000-11-15 | Lucas Industries Limited | Screw actuator |
| CN201301945Y (en) * | 2009-03-31 | 2009-09-02 | 启东润泽机床附件有限公司 | Multi-path lubricating ball screw pair |
| CN101761619A (en) * | 2009-11-16 | 2010-06-30 | 江苏速升自动化装备系统工程有限公司 | Combined screw pair |
| CN101793313A (en) * | 2009-11-16 | 2010-08-04 | 江苏速升自动化装备系统工程有限公司 | Combined screw pair having screw rods with three functional areas |
| CN102705464A (en) * | 2011-03-28 | 2012-10-03 | 陆向辉 | Double-nut gasket type internal circulating ball screw assembly |
| CN202132459U (en) * | 2011-06-24 | 2012-02-01 | 常州富丽康精密机械有限公司 | Double-nut gasket pre-tightened ball lead screw pair |
| CN203442063U (en) * | 2013-08-20 | 2014-02-19 | 山东威达重工股份有限公司 | Rolling and sliding composite lead screw pair |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843757A (en) * | 2018-09-06 | 2018-11-20 | 江苏品德机电科技有限公司 | A kind of rolling friction type lead screw |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131127 |