CN201378771Y - Actuator with fast response and high stability - Google Patents
Actuator with fast response and high stability Download PDFInfo
- Publication number
- CN201378771Y CN201378771Y CN 200920145667 CN200920145667U CN201378771Y CN 201378771 Y CN201378771 Y CN 201378771Y CN 200920145667 CN200920145667 CN 200920145667 CN 200920145667 U CN200920145667 U CN 200920145667U CN 201378771 Y CN201378771 Y CN 201378771Y
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- actuator
- nut
- electric motor
- motor
- screw
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Abstract
The utility model belongs to the field of an electric motor, relating to an actuator with fast response and high stability. The actuator comprises an electric motor, a ball screw, a bearing, a guide shell, a front support lug, a back support lug, a rotary transformer and a nut. A rotor of the electric motor is fixedly connected with the ball screw; the front part of the electric motor is provided with the bearing for supporting the ball screw; the ball screw is externally provided with the nut; the front end of the electric motor is also provided with the guide shell; the inner wall of the guide shell is provided with a trapezoidal guide way; the back end of the electric motor is provided with the rotary transformer; the back of the rotary transformer is provided with the back support lug which is fixedly connected with a stator of the electric motor; and the external surface of the nut is provided with a guide device of a needle bearing. The actuator has the advantage that the guide device of the needle roller bearing changes sliding friction between the nut and the guide shell into rolling friction, so as to reduce friction force and heighten the stability of the actuator. Parallel bias connecting end is added on the back support lug to prevent the actuator from rolling when works.
Description
Technical field
The utility model belongs to machine field, is specifically related to a kind of actuator rapid, that stability is high that responds.
Background technology
Servo actuator all has application in a lot of fields.As shown in Figure 1, traditional servo actuator comprises motor 7, ball-screw 2, bearing 4, guide housings 5, front journal 1, back journal stirrup 9, resolver 8 and nut 10 etc., wherein the rotor of motor 7 is fixedlyed connected with ball-screw 2, and can drive ball-screw 2 rotations, bearing 4 is used for back-up roller ballscrew 2.Be provided with nut 10 outside the ball-screw 2, ball-screw 2 outer surfaces are provided with thread groove, and nut 10 inner surfaces also are provided with thread groove, and the thread groove of ball-screw 2 and nut 10 is formed the screw thread raceway jointly, is provided with ball in this screw thread raceway.By described screw thread raceway the rotation of ball-screw 2 is converted to nut 10 motion vertically.The front end of motor 7 also is provided with guide housings 5, and guide housings 5 inwalls are provided with trapezoidal gathering sill.The outer surface of nut 10 is provided with projection, and nut 10 slides in the gathering sill of guide housings 5 vertically by this projection.Nut 10 foremost by the fixedly connected front journal 1 of screw thread.Be provided with resolver 8 in the rear end of motor 7, the back of resolver 8 is provided with the back journal stirrup 9 of fixedlying connected with the stator of motor 7.The link of the link of front journal 1 and miscellaneous equipment, back journal stirrup 9 and miscellaneous equipment and ball-screw 2 are on same axis.
The shortcoming of tradition servo actuator is: 1. lead by the slip of the projection on the nut 10 in gathering sill, frictional force and noise are all very big, are unfavorable for the raising of servo actuator dynamic response performance; 2. back journal stirrup 9 has only one with the link of miscellaneous equipment, and actuator can produce lift-over in axial motion, is unfavorable for the stable of actuator.
Summary of the invention
The purpose of this utility model is the defective at prior art, and a kind of job stability height is provided, and responds actuator rapidly.
The utility model is achieved in that a kind of response is rapid, the actuator that stability is high, comprise motor, ball-screw, bearing, guide housings, front journal, back journal stirrup, resolver and nut, wherein the rotor of motor is fixedlyed connected with ball-screw, the front of motor is provided with the bearing that is used for the back-up roller ballscrew, ball-screw is provided with nut outward, the front end of motor also is provided with guide housings, the guide housings inwall is provided with trapezoidal gathering sill, rear end at motor is provided with resolver, the back of resolver is provided with the back journal stirrup of fixedlying connected with the stator of motor, wherein, on the outer surface of described nut, be provided with the needle bearing guider.
Aforesaid a kind of actuator rapid, that stability is high that responds, wherein, the needle bearing guider comprises bolt also fixedly connected with it in the inserted num, is enclosed within the needle bearing on the bolt and is used for spacing threaded back-up ring.
Aforesaid a kind of actuator rapid, that stability is high that responds, wherein, back journal stirrup is provided with two links.
Aforesaid a kind of actuator rapid, that stability is high that responds, wherein, be used for the link of the link of load and front journal and ball-screw in two links on the back journal stirrup at same axis, another link on the back journal stirrup and the link Parallel offset that is used for load.
Use effect of the present utility model to be: to change the sliding friction between nut and the guide housings into rolling friction by increasing the needle bearing guider, reduced frictional force, improved the stability of actuator, also improved the dynamic response of actuator.By when the link that increases Parallel offset on the journal stirrup of back has been avoided actuator in work, producing the situation of rolling.
Description of drawings
Fig. 1 is the structural representation of actuator in the conventional art;
Fig. 2 be the response that provides of the utility model rapidly, the structural representation of actuator that stability is high;
Fig. 3 is the local enlarged diagram of needle bearing guider.
Among the figure: 1. front journal, 2. ball-screw, 3. needle bearing guider, 4. self-lubricating angular contact bearing, 5. guide housings, 6. spline, 7. motor, 8. resolver, 9. back journal stirrup, 10. nut, 11. bolts, 12. needle bearings, 13. back-up rings.
Embodiment
As shown in Figure 2, a kind ofly respond rapidly, the high actuator of stability comprises motor 7, ball-screw 2, bearing 4, guide housings 5, front journal 1, back journal stirrup 9, resolver 8 and nut 10 etc., wherein the rotor of motor 7 is fixedlyed connected with ball-screw 2, and can drive ball-screw 2 rotations, bearing 4 is used for back-up roller ballscrew 2.Be provided with nut 10 outside the ball-screw 2, ball-screw 2 outer surfaces are provided with thread groove, and nut 10 inner surfaces also are provided with thread groove, and the thread groove of ball-screw 2 and nut 10 is formed the screw thread raceway jointly, is provided with ball in this screw thread raceway.By described screw thread raceway the rotation of ball-screw 2 is converted to nut 10 motion vertically.The front end of motor 7 also is provided with guide housings 5, and guide housings 5 inwalls are provided with trapezoidal gathering sill.The outer surface of nut 10 is provided with needle bearing guider 3.As shown in Figure 3, needle bearing guider 3 comprises bolt 11 also fixedly connected with it in the inserted num 10, is enclosed within the needle bearing 12 on the bolt 11 and is used for spacing threaded back-up ring 13.Nut 10 slides in the gathering sill of guide housings 5 vertically by this needle bearing guider 3, needle bearing 12 can serve as that axle rotates with bolt 11 when nut 10 slides in the gathering sill of guide housings 5 vertically, then reduce the frictional force that nut slided and produces in the guide housings 5 in 10 years, increase the stability of actuator, improve the dynamic response of actuator.Nut 10 foremost by the fixedly connected front journal 1 of screw thread.Be provided with resolver 8 in the rear end of motor 7, the back of resolver 8 is provided with the back journal stirrup 9 of fixedlying connected with the stator of motor 7.Be provided with two links that are connected with other equipment on the journal stirrup 9 of back, one of them is used for load, and another rotates when being used to prevent the actuator motion.Be used for the link of load and ball-screw 2 on the link of front journal 1 and miscellaneous equipment, the back journal stirrup 9 at same axis.Link that rotates when being used on the back journal stirrup 9 prevent the actuator motion and the link Parallel offset that is used for load.
Claims (4)
1. a response rapidly, the actuator that stability is high, comprise motor (7), ball-screw (2), bearing (4), guide housings (5), front journal (1), back journal stirrup (9), resolver (8) and nut (10), wherein the rotor of motor (7) is fixedlyed connected with ball-screw (2), the front of motor (7) is provided with the bearing (4) that is used for back-up roller ballscrew (2), the outer nut (10) that is provided with of ball-screw (2), the front end of motor (7) also is provided with guide housings (5), guide housings (5) inwall is provided with trapezoidal gathering sill, be provided with resolver (8) in the rear end of motor (7), the back of resolver (8) is provided with the back journal stirrup (9) of fixedlying connected with the stator of motor (7), it is characterized in that: be provided with needle bearing guider (3) on the outer surface of described nut (10).
2. a kind of actuator rapid, that stability is high that responds as claimed in claim 1, it is characterized in that: needle bearing guider (3) comprises bolt (11) also fixedly connected with it in the inserted num (10), is enclosed within the needle bearing (12) on the bolt (11) and is used for spacing threaded back-up ring (13).
3. a kind of actuator rapid, that stability is high that responds as claimed in claim 1 or 2, it is characterized in that: described back journal stirrup (9) is provided with two links.
4. a kind of actuator rapid, that stability is high that responds as claimed in claim 3, it is characterized in that: the link that is used for load in two links on the described back journal stirrup (9) and the link of front journal 1 and ball-screw 2 be at same axis, another link on the back journal stirrup (9) and be used for the link Parallel offset of load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920145667 CN201378771Y (en) | 2009-03-20 | 2009-03-20 | Actuator with fast response and high stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920145667 CN201378771Y (en) | 2009-03-20 | 2009-03-20 | Actuator with fast response and high stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378771Y true CN201378771Y (en) | 2010-01-06 |
Family
ID=41518891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920145667 Expired - Lifetime CN201378771Y (en) | 2009-03-20 | 2009-03-20 | Actuator with fast response and high stability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378771Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324800A (en) * | 2011-04-12 | 2012-01-18 | 深圳市再丰达实业有限公司 | Intensive rotary expansion device |
| CN102478034A (en) * | 2010-11-22 | 2012-05-30 | 北京精密机电控制设备研究所 | Support lug of servo actuator adapting to axisymmetric swinging nozzle |
| CN103527737A (en) * | 2012-07-05 | 2014-01-22 | 北京精密机电控制设备研究所 | Parallel electromechanical actuator |
| CN103840601A (en) * | 2014-03-06 | 2014-06-04 | 北京精密机电控制设备研究所 | Electric-mechanical actuator |
| CN107697261A (en) * | 2017-09-05 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of linear rudder operating mechanism of naval vessel self-shield |
| CN107968521A (en) * | 2016-10-20 | 2018-04-27 | 北京精密机电控制设备研究所 | A kind of rotor and the integrated servomotor of leading screw |
| CN110855072A (en) * | 2019-10-15 | 2020-02-28 | 北京精密机电控制设备研究所 | Electromechanical actuator and electromechanical servo system |
-
2009
- 2009-03-20 CN CN 200920145667 patent/CN201378771Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478034A (en) * | 2010-11-22 | 2012-05-30 | 北京精密机电控制设备研究所 | Support lug of servo actuator adapting to axisymmetric swinging nozzle |
| CN102478034B (en) * | 2010-11-22 | 2015-07-15 | 北京精密机电控制设备研究所 | Support lug of servo actuator adapting to axisymmetric swinging nozzle |
| CN102324800A (en) * | 2011-04-12 | 2012-01-18 | 深圳市再丰达实业有限公司 | Intensive rotary expansion device |
| CN103527737A (en) * | 2012-07-05 | 2014-01-22 | 北京精密机电控制设备研究所 | Parallel electromechanical actuator |
| CN103840601A (en) * | 2014-03-06 | 2014-06-04 | 北京精密机电控制设备研究所 | Electric-mechanical actuator |
| CN107968521A (en) * | 2016-10-20 | 2018-04-27 | 北京精密机电控制设备研究所 | A kind of rotor and the integrated servomotor of leading screw |
| CN107697261A (en) * | 2017-09-05 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of linear rudder operating mechanism of naval vessel self-shield |
| CN107697261B (en) * | 2017-09-05 | 2019-06-18 | 北京精密机电控制设备研究所 | A kind of linear rudder operating mechanism of naval vessel self-shield |
| CN110855072A (en) * | 2019-10-15 | 2020-02-28 | 北京精密机电控制设备研究所 | Electromechanical actuator and electromechanical servo system |
| CN110855072B (en) * | 2019-10-15 | 2021-01-05 | 北京精密机电控制设备研究所 | Electromechanical actuator and electromechanical servo system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |