CN201191789Y - Electric ball guide-screw pair apparatus - Google Patents
Electric ball guide-screw pair apparatus Download PDFInfo
- Publication number
- CN201191789Y CN201191789Y CNU2008200218054U CN200820021805U CN201191789Y CN 201191789 Y CN201191789 Y CN 201191789Y CN U2008200218054 U CNU2008200218054 U CN U2008200218054U CN 200820021805 U CN200820021805 U CN 200820021805U CN 201191789 Y CN201191789 Y CN 201191789Y
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- CN
- China
- Prior art keywords
- ballscrew
- rotor
- ball
- electric
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an electric ballscrew pair device, which is composed of a stator, a rotor and a ballscrew, wherein the stator is an outer shell of the electric ballscrew pair device, the ballscrew is a mandrel, and the rotor with a hollow form is arranged between the stator and the ballscrew. The electric ball lead screw pair device adopts an electromotor and a ballscrew pair which are combined into a whole, the rotor of the electromotor is a hollow rotor, and a ball thread raceway and a returning device are arranged on the inner hole surface of the rotor as ball nuts of the ballscrew. When a motor works, the rotor rotates, power is directly transmitted to the ballscrew through the rotor, and a guiding mechanism is designed on the ballscrew to realize linear movements of the ballscrew. The structure of the electric ballscrew pair device is utilized, the rotor is used as the ballscrew nut, since the rotational inertia is smaller, thereby the relevant rotation speed can be improved, the moving speed is increased, and simultaneously the limit problem of the radial size and the axial size is better solved. The electric ballscrew pair device has simple whole structure, convenient operation and use, rapid moving speed, high precision, and stable and reliable movements.
Description
Technical field:
The utility model relates to the lead screw pair device, relates in particular to electric ball screw pair apparatus.
Background technology:
Drive ball screw assembly, and generally adopt servomotor to add the version of transmission device, can change rectilinear motion into rotatablely moving.The lead screw pair of prior art mainly is divided into inner loop mode and outer circulation mode two big classes, and ubiquitous problem is that the radial dimension of nut is bigger, and block bead position damaged phenomenon takes place in the transmission process easily.Inner loop mode is compared with the outer circulation mode, and the radial dimension of nut is compact, but its axial dimension is bigger.And since on the back device passage for ball turnover more, the phenomenon of easily making a pause in transmission process is so be not suitable for using telling under the condition.
The utility model content:
The purpose of this utility model is, overcomes the deficiencies in the prior art part, and a kind of electric ball screw pair apparatus is provided, and can adapt to the job requirement of high-speed overload.
Electric ball screw pair apparatus described in the utility model, include stator, rotor and ball-screw and form, said stator is the shell of electric ball screw pair apparatus described in the utility model, and ball-screw is a mandrel, between stator and ball-screw, be provided with the rotor of hollow form.The utility model adopts motor and ball screw assembly, to be combined as a whole, and motor rotor is a hollow rotor, and the inner hole surface of rotor is provided with ball screw thread raceway and back device, as the ball nut of ball-screw.When machine operation, rotor rotation is directly passed through the rotor transferring power to ball-screw, designs guiding mechanism on ball-screw, realizes the rectilinear motion of ball-screw.Utilize structure of the present utility model, rotor is promptly as ball nut, because the moment of inertia of rotor is less, so can improve relative rotation speed, increases translational speed.
Electric ball screw pair apparatus described in the utility model is set to common ball nut with rotor, has also just solved the restricted problem of radial dimension and axial dimension preferably.The utility model overall structure is simple, and is easy for operation, and translational speed is fast, precision height, stable and reliable operation.
Description of drawings:
Accompanying drawing is the structural representation of electric ball screw pair apparatus described in the utility model.1-stator 2-rotor 3-ball-screw
Embodiment:
Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: electric ball screw pair apparatus described in the utility model, including stator 1, rotor 2 and ball-screw 3 forms, said stator 1 is the shell of electric ball screw pair apparatus described in the utility model, ball-screw 3 is mandrels, between stator 1 and ball-screw 3, be provided with the rotor 2 of hollow form.The utility model adopts motor and ball screw assembly, to be combined as a whole, and motor rotor is a hollow rotor, and the inner hole surface of rotor 2 is provided with ball screw thread raceway and back device, as the ball nut of ball-screw.When machine operation, rotor 2 rotates, and directly passes through rotor 2 transferring power to ball-screw 3, designs guiding mechanism on ball-screw 3, realizes the rectilinear motion of ball-screw 3.Utilize structure of the present utility model, rotor 2 is promptly as ball nut, because the moment of inertia of rotor 2 is less, so can improve relative rotation speed, increases translational speed.Electric ball screw pair apparatus described in the utility model is set to common ball nut with rotor 2, has also just solved the restricted problem of radial dimension and axial dimension preferably.The utility model overall structure is simple, and is easy for operation, and translational speed is fast, precision height, stable and reliable operation.
Claims (3)
1, electric ball screw pair apparatus is characterized in that stator (1) is a shell of the present utility model, and ball-screw (3) is a mandrel, between stator (1) and ball-screw (3), is provided with the rotor (2) of hollow form.
2, electric ball screw pair apparatus according to claim 1 is characterized in that motor rotor is a hollow rotor, and the inner hole surface of rotor (2) is provided with ball screw thread raceway and back device, as the ball nut of ball-screw.
3, electric ball screw pair apparatus according to claim 1 is characterized in that the last design of ball-screw (3) has guiding mechanism, realizes the rectilinear motion of ball-screw (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218054U CN201191789Y (en) | 2008-05-01 | 2008-05-01 | Electric ball guide-screw pair apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218054U CN201191789Y (en) | 2008-05-01 | 2008-05-01 | Electric ball guide-screw pair apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201191789Y true CN201191789Y (en) | 2009-02-04 |
Family
ID=40335948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200218054U Expired - Fee Related CN201191789Y (en) | 2008-05-01 | 2008-05-01 | Electric ball guide-screw pair apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201191789Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2008
- 2008-05-01 CN CNU2008200218054U patent/CN201191789Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20120501 |