CN202648852U - Ball screw pair pretightening force measurement and control device - Google Patents
Ball screw pair pretightening force measurement and control device Download PDFInfo
- Publication number
- CN202648852U CN202648852U CN 201220248301 CN201220248301U CN202648852U CN 202648852 U CN202648852 U CN 202648852U CN 201220248301 CN201220248301 CN 201220248301 CN 201220248301 U CN201220248301 U CN 201220248301U CN 202648852 U CN202648852 U CN 202648852U
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- control device
- pretightning force
- ball screw
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- ball
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- 238000005259 measurement Methods 0.000 title abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
The utility model relates to a measurement and control device, especially a vice pretightning force measurement and control device of ball, including the casing, the casing inner chamber from interior to exterior has set gradually pressure sensor, gasket and the interior holder the same with the casing internal diameter, and interior holder one side is seted up flutedly, is provided with disc spring, piezoelectric actuator and adjustment pad in the recess. The utility model discloses a vice pretightning force measurement and control device of ball utilizes piezoceramics to design continuous adjustable preloading device to improved ball's the precision of feeding when having easy operation, measuring accuracy, automatic clearance compensation characteristics.
Description
Technical field
The utility model relates to a kind of measure and control device, especially a kind of ball screw assembly, pretightning force measure and control device.
Background technology
The characteristics such as ball-screw is high because of its transmission efficiency, wearing and tearing are little, motion is steady, transmission is reversible become the comparatively desirable feed mechanism of numerically-controlled machine.Because always there are the gap in the error of making and installing, ball screw assembly.Simultaneously, ball screw assembly, makes the ball position generation elastic deformation that contacts with the screw thread raceway under axial operating load effect.If end play is arranged or ball and the flexible distortion of raceway contact point under Axial Loads in the ball screw assembly,, then when the ball-screw backward rotation, will produce idle running error, thereby affect transmission accuracy and the rigidity that has reduced ball screw assembly.
Because ball screw assembly, certainly exists wearing and tearing in long-term use procedure, pretightning force is reduced, cause the gap constantly to increase because not compensating accurately at any time, so can not guarantee the transmission accuracy that ball-screw is stable.
The utility model content
The technical problems to be solved in the utility model is: for solving the problem of above-mentioned existence, provide a kind of ball screw assembly, pretightning force measure and control device, solve the existing apparatus complex operation, measure problem inaccurate, can't automatic compensation gap.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of ball screw assembly, pretightning force measure and control device, comprise housing, the housing inner chamber is connected with the pressure transducer identical with the housing internal diameter, pad and interior retainer from inside to outside successively, interior retainer one side offers groove, is provided with butterfly spring, piezoelectric actuator and adjusting pad in the groove.
In order to improve the feed accuracy of ball-screw, housing, pressure transducer, pad and interior retainer all adopt chamfered, and piezoelectric actuator is piezoelectric ceramic actuator, and pad is the steel pad.
Design continuous adjustable pretension measure and control device according to the elastic deformation amount behind the control pretension.This device is comprised of sensor, micrometric displacement and control device and mechanical mechanism.Its principle of work is: in the situation that defeated people's marking current at first applies basic pretightning force to whole system, basic pretightning force guarantees in the situation that drive corruption, system also can normally march forward to.Take this basic pretightning force as starting point, according to machining status and operation conditions, in the CNC program, utilize marking current to preset required pretightning force, control by extension and the contraction of driver.
When the pretightning force on being applied to driver changes, the power sensor acquired information of being combined with driver, and pass to computer control; Computer control produces control signal according to compensation rate again according to the calculated signals bit shift compensation amount of pressure transducer transmission, and control inputs piezoelectricity makes the micro-displacement apparatus driver produce corresponding output displacement, reaches the pretension purpose thereby eliminate the gap.
The beneficial effects of the utility model are, a kind of ball screw assembly, pretightning force measure and control device of the present utility model utilizes piezoelectric ceramics to design continuous adjustable pre-tightening apparatus, thereby has feed accuracy simple to operate, that measurement is accurate, automatic backlash has improved ball-screw when compensating characteristics.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is fundamental diagram of the present utility model.
1. interior retainers among the figure, 2. adjusting pad, 3. piezoelectric actuator, 4. butterfly spring, 5. pad, 6. pressure transducer, 7. housing.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of ball screw assembly, pretightning force measure and control device as shown in Figure 1, comprise housing 7, housing 7 inner chambers are connected with pressure transducer 6, pad 5 and the interior retainer 1 identical with housing 7 internal diameters from inside to outside successively, interior retainer 1 one sides offer groove, be provided with butterfly spring 4, piezoelectric actuator 3 and adjusting pad 2 in the groove, in order to improve the feed accuracy of ball-screw, housing 1, pressure transducer 6, pad 5 and interior retainer 1 all adopt chamfered, piezoelectric actuator 3 is piezoelectric ceramic actuator, and pad 5 is steel pad 5.
As shown in Figure 2 in the situation that defeated people's marking current at first applies basic pretightning force to whole system, basic pretightning force guarantees in the situation that piezoelectric actuator 3 damages, system also can normally march forward to.Take this basic pretightning force as starting point, according to machining status and operation conditions, in the CNC program, utilize marking current to preset required pretightning force, control by extension and the contraction of piezoelectric actuator 3.When the pretightning force on being applied to piezoelectric actuator 3 changes, with pressure transducer 6 acquired informations of piezoelectric actuator 3 combinations, and pass to computer control; Computer control produces control signal according to compensation rate again according to the calculated signals bit shift compensation amount of pressure transducer 6 transmission, and control inputs piezoelectricity makes micro-displacement apparatus piezoelectric actuator 3 produce corresponding output displacement, reaches the pretension purpose thereby eliminate the gap.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on the instructions, must determine its technical scope according to the claim scope.
Claims (5)
1. ball screw assembly, pretightning force measure and control device, comprise housing (7), it is characterized in that: described housing (7) inner chamber is connected with pressure transducer (6), pad (5) and the interior retainer (1) identical with housing (7) internal diameter from inside to outside successively, described interior retainer (1) one side offers groove, is provided with butterfly spring (4), piezoelectric actuator (3) and adjusting pad (2) in the described groove.
2. a kind of ball screw assembly, pretightning force measure and control device according to claim 1, it is characterized in that: described housing (7), pressure transducer (6), pad (5) and interior retainer (1) all adopt chamfered.
3. a kind of ball screw assembly, pretightning force measure and control device according to claim 1, it is characterized in that: described piezoelectric actuator (3) is piezoelectric ceramic actuator.
4. a kind of ball screw assembly, pretightning force measure and control device according to claim 1, it is characterized in that: the output displacement of described piezoelectric actuator (3) is 28-32 μ m.
5. a kind of ball screw assembly, pretightning force measure and control device according to claim 1, it is characterized in that: described pad (5) is steel pad (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248301 CN202648852U (en) | 2012-05-30 | 2012-05-30 | Ball screw pair pretightening force measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248301 CN202648852U (en) | 2012-05-30 | 2012-05-30 | Ball screw pair pretightening force measurement and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648852U true CN202648852U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220248301 Expired - Fee Related CN202648852U (en) | 2012-05-30 | 2012-05-30 | Ball screw pair pretightening force measurement and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648852U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934723A (en) * | 2014-04-23 | 2014-07-23 | 清华大学 | Controllable adjusting and measuring device of ball screw pretightening force and pretensioning amount |
| CN103968024A (en) * | 2014-04-14 | 2014-08-06 | 北京工业大学 | Ball screw pair capable of automatically adjusting pretightening force |
| CN104368967A (en) * | 2014-12-11 | 2015-02-25 | 常州工学院 | Device capable of adjusting and measuring pretightening force loss of ball screw pair and experiment table of device |
| CN104741936A (en) * | 2015-04-10 | 2015-07-01 | 上海理工大学 | Pretightening force regulating device of machine table |
| CN105181326A (en) * | 2015-07-31 | 2015-12-23 | 常州工学院 | Method capable of monitoring pretightening force loss of ball screw pair in real time |
| CN105965307A (en) * | 2016-05-03 | 2016-09-28 | 清华大学 | Double-nut ball screw pair pre-tightening force adjusting and measuring device and linear feeding system |
| CN106017915A (en) * | 2016-05-11 | 2016-10-12 | 清华大学 | Ball screw assembly precision retaining testing apparatus with characteristics of precise pre tightening and loading |
| CN112091143A (en) * | 2020-07-21 | 2020-12-18 | 温州大学 | Cold heading machine main transmission mechanism kinematic pair clearance compensation device and control method thereof |
| CN115342866A (en) * | 2022-10-18 | 2022-11-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
-
2012
- 2012-05-30 CN CN 201220248301 patent/CN202648852U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968024A (en) * | 2014-04-14 | 2014-08-06 | 北京工业大学 | Ball screw pair capable of automatically adjusting pretightening force |
| CN103968024B (en) * | 2014-04-14 | 2016-08-10 | 北京工业大学 | One is automatically adjusted pretightning force ball screw assembly, |
| CN103934723A (en) * | 2014-04-23 | 2014-07-23 | 清华大学 | Controllable adjusting and measuring device of ball screw pretightening force and pretensioning amount |
| CN104368967A (en) * | 2014-12-11 | 2015-02-25 | 常州工学院 | Device capable of adjusting and measuring pretightening force loss of ball screw pair and experiment table of device |
| CN104741936B (en) * | 2015-04-10 | 2017-06-23 | 上海理工大学 | Platen pre-tightening force adjusting device |
| CN104741936A (en) * | 2015-04-10 | 2015-07-01 | 上海理工大学 | Pretightening force regulating device of machine table |
| CN105181326B (en) * | 2015-07-31 | 2017-09-29 | 常州工学院 | A kind of method that ball wire bar pair pretightning force loss can be monitored in real time |
| CN105181326A (en) * | 2015-07-31 | 2015-12-23 | 常州工学院 | Method capable of monitoring pretightening force loss of ball screw pair in real time |
| CN105965307A (en) * | 2016-05-03 | 2016-09-28 | 清华大学 | Double-nut ball screw pair pre-tightening force adjusting and measuring device and linear feeding system |
| CN106017915A (en) * | 2016-05-11 | 2016-10-12 | 清华大学 | Ball screw assembly precision retaining testing apparatus with characteristics of precise pre tightening and loading |
| CN112091143A (en) * | 2020-07-21 | 2020-12-18 | 温州大学 | Cold heading machine main transmission mechanism kinematic pair clearance compensation device and control method thereof |
| CN115342866A (en) * | 2022-10-18 | 2022-11-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
| CN115342866B (en) * | 2022-10-18 | 2023-01-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130102 Termination date: 20150530 |
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| EXPY | Termination of patent right or utility model |