CN210461578U - Lead screw adjusting mechanism - Google Patents
Lead screw adjusting mechanism Download PDFInfo
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- CN210461578U CN210461578U CN201921532163.9U CN201921532163U CN210461578U CN 210461578 U CN210461578 U CN 210461578U CN 201921532163 U CN201921532163 U CN 201921532163U CN 210461578 U CN210461578 U CN 210461578U
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- screw rod
- connecting piece
- lead screw
- nut sleeve
- cross
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Abstract
The utility model relates to a screw rod adjusting mechanism, which comprises a support body, a screw rod which is arranged around the axis of the screw rod in a rotating way, a nut sleeve which is sleeved on the periphery of the screw rod and is in threaded fit with the screw rod, and a driving assembly which is fixed on the support body and provides power for the rotation of the screw rod, wherein the nut sleeve is fixedly connected with the support body, and the screw rod is connected with a power output shaft of the driving assembly through a connecting mechanism; when the power output shaft of the driving assembly rotates, the connecting mechanism can be driven to rotate, and then the connecting mechanism drives the screw rod to rotate and enables the screw rod to do linear telescopic motion relative to the connecting mechanism and the nut sleeve; the nut sleeve is fixedly arranged and the connection mechanism is arranged, so that a foundation is laid for adopting the screw rod as an adjusting part, and finally the adjusted object is driven by the screw rod, so that the object to be adjusted is accurately adjusted; and then avoid adopting the traditional mode that drives by nut cover and is adjusted the object and adjust, realized compacter structure, reduce holistic cost of manufacture.
Description
Technical Field
The utility model relates to a lead screw adjustment mechanism.
Background
In the screw rod adjusting mechanism in the prior art, usually, a power output shaft of a driver for providing a rotating force is fixedly connected with a screw rod, a nut sleeve in threaded fit with the screw rod is sleeved on the screw rod, the nut sleeve needs to be fixed in the rotating direction of the nut sleeve, namely, the nut sleeve cannot rotate along with the screw rod, so that when the driver drives the screw rod to rotate, the nut sleeve can do linear motion along the screw rod, and thus, an adjusted part is driven by the nut rod to move accurately, the above method is applicable to an adjusted object which can be fixed with the nut sleeve, because the nut sleeve is fixed with the adjusted object, the adjusted object can prevent the nut sleeve from rotating along with the screw rod, but for the adjusted object which cannot be directly fixed with the nut sleeve, the nut sleeve cannot move along the linear motion by adopting the above method, if the above method is forcibly adopted, a guide part is additionally arranged, let nut cover can only slide the setting along the guide part straight line, then nut cover rectilinear motion can push away and be adjusted the object, but the guide part need set up along the straight line and set up certain length so that lead to the nut cover, must let the whole volume increase of adjustment mechanism, to the less operating mode in space, such design is very unsuitable: in addition, the precision of the sliding fit between the guide component and the nut sleeve is very high in manufacturing requirement and high in manufacturing requirement, and in order to avoid abrasion of the screw threads of the lead screw, the nut sleeve is generally made of copper, friction is generated between the copper nut sleeve and the guide component, abrasion is caused by long-time use, and the problem of the sliding precision of the nut sleeve is caused.
Disclosure of Invention
The utility model aims to solve the technical problem that it provides a lead screw adjustment mechanism to overcome the not enough of prior art.
For solving the above technical problem, the utility model discloses a technical scheme is:
a lead screw adjusting mechanism comprises a supporting body, a lead screw, a nut sleeve and a driving assembly, wherein the lead screw is rotatably arranged around the axis of the lead screw, the nut sleeve is sleeved on the periphery of the lead screw and is in threaded fit with the lead screw, the driving assembly is fixed on the supporting body and provides power for the rotation of the lead screw, the nut sleeve is fixedly connected with the supporting body, and the lead screw is connected with a power output shaft of the driving assembly through a connecting mechanism; when the power output shaft of the driving assembly rotates, the connecting mechanism can be driven to rotate, and then the connecting mechanism drives the screw rod to rotate and enables the screw rod to do linear telescopic motion relative to the connecting mechanism and the nut sleeve.
Preferably, the connecting mechanism comprises a connecting piece, the connecting piece is fixedly connected with a power output shaft of the driving assembly, the screw rod is connected with the connecting piece in a sliding mode, and the screw rod can only slide relative to the connecting piece in the linear motion direction.
Preferably, the connecting piece is a sleeve-shaped part, and the connecting piece is sleeved on the periphery of the screw rod in a sliding manner.
Preferably, one side of the length direction of the screw rod is provided with a sliding part, the sliding part is slidably inserted into the inner periphery of the connecting piece, the other side of the length direction of the screw rod is a threaded part provided with threads, and the nut sleeve is in threaded fit connection with the threaded part. The sliding part is positioned at one side close to the driving component, and the threaded part is positioned at one side far away from the driving component.
Preferably, the cross-sectional shape of the inner periphery of the connecting member is non-circular, and the cross-sectional shape of the sliding portion of the screw mandrel is configured to follow the cross-sectional shape of the inner periphery of the connecting member.
Preferably, the sectional outer shape of the inner circumference of the connecting member and the sectional outer shape of the sliding portion of the lead screw are both square, or the sectional outer shape of the inner circumference of the connecting member and the sectional outer shape of the sliding portion of the lead screw are both rectangular, or the sectional outer shape of the inner circumference of the connecting member and the sectional outer shape of the sliding portion of the lead screw are both triangular, or the sectional outer shape of the inner circumference of the connecting member and the sectional outer shape of the sliding portion of the lead screw are both rhombic.
Preferably, a clamping mechanism is arranged between the connecting piece and the sliding part of the screw rod.
Preferably, the clamping mechanism is a clamping portion formed on the inner periphery of the connecting piece and a matching portion formed on the outer periphery of the sliding portion and matched and clamped with the clamping portion.
Preferably, the support body is a rotary body, one end of the support body is fixedly connected with the driving assembly, and the nut sleeve is fixed on the inner periphery of the other end of the support body.
Preferably, the support body is further formed with a mounting portion at an outer periphery thereof for abutting and fixedly mounting with an external equipment rack.
Preferably, the driving assembly comprises a servo motor and a speed reducer, and a power output shaft of the speed reducer is fixedly connected with the connecting piece.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
the screw rod adjusting mechanism of the utility model, through a brand new structure design, fixedly arranges the nut sleeve and arranges the connecting mechanism, lays a foundation for adopting the screw rod as an adjusting part, and finally drives the adjusted object by the screw rod, thereby realizing the accurate adjustment of the object to be adjusted; and then avoid adopting the traditional mode that drives by nut cover and is adjusted the object and adjust, realized compacter structure, reduce holistic cost of manufacture.
Drawings
Fig. 1 is a main sectional view of the screw rod adjusting mechanism of the present invention;
wherein: 10. a support body; 101. an installation part; 11. a connecting member; 12. a screw rod; 121. a sliding part; 122. a threaded portion; 13. a nut sleeve; 21. a servo motor; 22. and a speed reducer.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the lead screw 12 adjusting mechanism includes a support body 10, a lead screw 12 rotatably disposed around its axis, a nut sleeve 13 sleeved on the periphery of the lead screw 12 and in threaded fit with the lead screw 12, and a driving assembly (the driving assembly includes a servo motor 21 and a speed reducer 22, a power output shaft of the speed reducer 22 is in butt joint with a connecting mechanism) fixed on the support body 10 and providing power for the rotation of the lead screw 12, the nut sleeve 13 is fixedly connected with the support body 10, and the lead screw 12 is connected with the power output shaft of the driving assembly through the connecting mechanism; when the power output shaft of the driving assembly rotates, the connecting mechanism can be driven to rotate, and then the connecting mechanism drives the screw rod 12 to rotate, so that the screw rod 12 makes linear telescopic motion relative to the connecting mechanism and the nut sleeve 13. A sliding part 121 is formed on one longitudinal side of the screw rod 12, a threaded part 122 with a thread is formed on the other longitudinal side of the screw rod 12, and the nut sleeve 13 is connected with the threaded part 122 in a threaded fit manner. And the sliding part 121 is located at a side close to the driving assembly and the threaded part 122 is located at a side far from the driving assembly.
Specifically, the connecting mechanism comprises a connecting piece 11, the connecting piece 11 is fixedly connected with a power output shaft of the driving assembly, the screw rod 12 is in sliding connection with the connecting piece 11, and the screw rod 12 can only slide relative to the connecting piece 11 in the linear motion direction. The connecting piece 11 is a sleeve-shaped part, and the connecting piece 11 is sleeved on the periphery of the screw rod 12 in a sliding manner. The inner peripheral cross-sectional shape of the coupling 11 is non-circular, and the cross-sectional shape of the sliding portion 121 of the screw 12 follows the inner peripheral cross-sectional shape of the coupling 11. Specifically, the cross-sectional shape of the inner circumference of the connecting member 11 and the cross-sectional shape of the sliding portion 121 of the lead screw 12 may be both square, rectangular, triangular, or other non-circular heart states such as diamond, kidney-shaped, etc., so as to ensure that the lead screw 12 can only slide along the connecting member 11, and will not rotate relative to the connecting member 11, and further the driving assembly can transmit the rotating force to the lead screw 12 through the connecting member 11 to rotate the lead screw 12 relative to the nut sleeve 13.
Of course, in order to achieve the connection relationship between the connecting member 11 and the screw rod 12 only in a sliding and non-rotating manner, a clamping mechanism may be provided between the connecting member 11 and the sliding portion 121 of the screw rod 12. The clamping mechanism may be a clamping portion formed on the inner periphery of the connecting member 11 and a matching portion formed on the outer periphery of the sliding portion 121 and matched and clamped with the clamping portion. The sliding portion 121 cannot rotate on the inner circumference of the connecting member 11 but can only slide back and forth along the inner circumference of the connecting member 11 by the engaging portion (e.g., a locking boss) and the engaging portion (e.g., a locking groove, which needs to pass through the sliding portion 121 longitudinally along the length direction).
In this example, the support body 10 is a rotary body, one end of the support body 10 is fixedly connected with the driving assembly, the nut sleeve 13 is fixed on the inner circumference of the other end of the support body 10, and all the components are arranged in the support body 10, so that the whole structure is compact. In addition, the outer circumference of the supporting body 10 is formed with a mounting portion 101 for butt-fixing with an external equipment rack.
To sum up, the screw rod adjusting mechanism of the utility model, through the brand new structural design, fixedly sets the nut sleeve and sets the nut sleeve through the connecting mechanism, lays a foundation for adopting the screw rod as an adjusting part, and finally drives the adjusted object through the screw rod, thereby realizing the precise adjustment of the object to be adjusted; and then avoid adopting the traditional mode that drives by nut cover and is adjusted the object and adjust, realized compacter structure, reduce holistic cost of manufacture.
The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited thereto, and the present invention is not limited to the above-mentioned embodiments, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of the present invention.
Claims (10)
1. The utility model provides a lead screw adjustment mechanism which characterized in that: the screw rod adjusting mechanism comprises a support body, a screw rod which is arranged around the axis of the screw rod in a rotating mode, a nut sleeve which is sleeved on the periphery of the screw rod and is in threaded fit with the screw rod, and a driving assembly which is fixed on the support body and provides power for the rotation of the screw rod, wherein the nut sleeve is fixedly connected with the support body, and the screw rod is connected with a power output shaft of the driving assembly through a connecting mechanism; when the power output shaft of the driving assembly rotates, the connecting mechanism can be driven to rotate, and then the connecting mechanism drives the screw rod to rotate and enables the screw rod to do linear telescopic motion relative to the connecting mechanism and the nut sleeve.
2. The lead screw adjustment mechanism of claim 1, wherein: the connecting mechanism comprises a connecting piece, the connecting piece is fixedly connected with a power output shaft of the driving assembly, the screw rod is connected with the connecting piece in a sliding mode, and the screw rod can only slide relative to the connecting piece in the linear motion direction.
3. The lead screw adjustment mechanism of claim 2, wherein: the connecting piece is a sleeve-shaped part, and the connecting piece is sleeved on the periphery of the screw rod in a sliding manner.
4. The lead screw adjustment mechanism of claim 3, wherein: the nut sleeve is characterized in that a sliding part is formed on one side of the threaded rod in the length direction, the sliding part is slidably inserted into the inner periphery of the connecting piece, a threaded part with threads is formed on the other side of the threaded rod in the length direction, and the nut sleeve is in threaded fit connection with the threaded part.
5. The lead screw adjustment mechanism of claim 2, wherein: the cross section of the inner periphery of the connecting piece is non-circular, and the cross section of the sliding part of the screw rod is arranged in a shape similar to the cross section of the inner periphery of the connecting piece.
6. The lead screw adjustment mechanism of claim 5, wherein: the cross-sectional shape of the inner periphery of the connecting piece and the cross-sectional shape of the sliding part of the screw rod are both squares, or the cross-sectional shape of the inner periphery of the connecting piece and the cross-sectional shape of the sliding part of the screw rod are both rectangles, or the cross-sectional shape of the inner periphery of the connecting piece and the cross-sectional shape of the sliding part of the screw rod are both triangles, or the cross-sectional shape of the inner periphery of the connecting piece and the cross-sectional shape of the sliding part of the screw rod are both rhombuses.
7. The lead screw adjustment mechanism of claim 2, wherein: and a clamping mechanism is arranged between the connecting piece and the sliding part of the screw rod.
8. The lead screw adjustment mechanism of claim 7, wherein: the clamping mechanism is formed on the clamping portion on the inner periphery of the connecting piece and the matching portion formed on the outer periphery of the sliding portion and matched and clamped with the clamping portion.
9. The lead screw adjustment mechanism of claim 1, wherein: the support body is a rotary body, one end part of the support body is fixedly connected with the driving assembly, and the nut sleeve is fixed on the inner periphery of the other end of the support body.
10. The lead screw adjustment mechanism of claim 9, wherein: the support body periphery still is formed with the installation department that is used for with external equipment frame butt joint fixed mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532163.9U CN210461578U (en) | 2019-09-16 | 2019-09-16 | Lead screw adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532163.9U CN210461578U (en) | 2019-09-16 | 2019-09-16 | Lead screw adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210461578U true CN210461578U (en) | 2020-05-05 |
Family
ID=70432406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921532163.9U Active CN210461578U (en) | 2019-09-16 | 2019-09-16 | Lead screw adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210461578U (en) |
-
2019
- 2019-09-16 CN CN201921532163.9U patent/CN210461578U/en active Active
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