CN220227708U - Ball screw - Google Patents
Ball screw Download PDFInfo
- Publication number
- CN220227708U CN220227708U CN202321915915.6U CN202321915915U CN220227708U CN 220227708 U CN220227708 U CN 220227708U CN 202321915915 U CN202321915915 U CN 202321915915U CN 220227708 U CN220227708 U CN 220227708U
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- CN
- China
- Prior art keywords
- screw
- screw rod
- nut
- rod
- threaded
- 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.)
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- 230000007704 transition Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- Transmission Devices (AREA)
Abstract
The utility model discloses a ball screw, which comprises a base and a screw rod, wherein two ends of the screw rod are rotatably arranged on the base; the base is provided with a driving motor which is connected with and drives the screw rod to rotate, the middle part of the screw rod is provided with a threaded area, and two ends of the screw rod are provided with blank polish rod areas; a screw rod nut is arranged in a sliding manner along the extending direction of the screw rod, guide sleeves are fixed at two ends of the screw rod nut, and screw teeth for being in threaded fit with the threaded area are arranged on the guide sleeves; elastic parts are arranged on bases at two ends of the screw rod and used for pushing the screw rod nut to the threaded area when the screw rod nut slides into the polished rod area. According to the screw nut, after the screw nut slides out of the threaded area, the screw nut returns back to the threaded area through the reverse rotation of the screw, so that the screw nut can slide back and forth on the ball screw, and the transmission efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of screw rods, in particular to a ball screw.
Background
After the screw nut of the existing ball screw slips out of the threaded area on the screw, even if the screw is rotated reversely, the screw nut cannot return to the threaded area again.
Disclosure of Invention
The utility model aims to provide a ball screw, which enables a screw nut to return to a threaded area through reversing of the screw after the screw nut slides out of the threaded area.
To achieve the above object, the solution of the present utility model is:
the ball screw comprises a base and a screw rod, wherein two ends of the screw rod are rotatably arranged on the base; the base is provided with a driving motor which is connected with and drives the screw rod to rotate, the middle part of the screw rod is provided with a threaded area, and two ends of the screw rod are provided with blank polish rod areas; a screw rod nut is arranged in a sliding manner along the extending direction of the screw rod, guide sleeves are fixed at two ends of the screw rod nut, and screw teeth for being in threaded fit with the threaded area are arranged on the guide sleeves; elastic parts are arranged on bases at two ends of the screw rod and used for pushing the screw rod nut to the threaded area when the screw rod nut slides into the polished rod area.
Further, the thread region includes a screw body and a thread screwed to the outer circumference of the screw body, and the end of the thread has an inclination angle of 15 ° -20 ° to smoothly transition to the outer circumference of the screw body.
Further, the end of the screw thread has an inclination angle of 15-20 degrees to smoothly transition to the inner ring surface of the guide sleeve.
After the scheme is adopted, the beneficial effects of the utility model are as follows:
the two ends of the screw rod are rotatably arranged on the base; the base is provided with a driving motor which is connected with and drives the screw rod to rotate, the middle part of the screw rod is provided with a threaded area, and two ends of the screw rod are provided with blank polish rod areas; a screw rod nut is arranged in a sliding manner along the extending direction of the screw rod, guide sleeves are fixed at two ends of the screw rod nut, and screw teeth for being in threaded fit with the threaded area are arranged on the guide sleeves; elastic parts are arranged on the bases at the two ends of the screw rod and used for pushing the screw rod nut to the threaded area when the screw rod nut slides into the polished rod area; according to the screw nut, after the screw nut slides out of the threaded area, the screw nut returns back to the threaded area through the reverse rotation of the screw, so that the screw nut can slide back and forth on the ball screw, and the transmission efficiency is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of a ball screw structure of the present utility model;
FIG. 3 is a partial view of the utility model at A;
fig. 4 is a schematic structural view of the guide sleeve of the present utility model.
Description of the reference numerals:
base 10, elastic part 11, lead screw 20, screw thread area 21, lead screw main body 211, screw thread 212, polished rod area 22, driving motor 30, lead screw nut 40, uide bushing 41, screw tooth 411.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, a ball screw 20 includes a base 10 and a screw 20, both ends of the screw 20 being rotatably provided on the base 10; a driving motor 30 is arranged on the base 10, the driving motor 30 is connected with and drives the screw rod 20 to rotate, a threaded area 21 is arranged in the middle of the screw rod 20, and blank polish rod areas 22 are arranged at two ends of the screw rod 20; a screw nut 40 is slidably arranged along the extending direction of the screw rod 20, guide sleeves 41 are fixed at two ends of the screw nut 40, screw teeth 411 for being matched with the screw threads 212 of the screw thread area 21 are arranged on the guide sleeves 41, and specifically, the screw nut 40 slides back and forth between the screw thread area 21 and the polish rod area 22; the bases 10 at two ends of the screw rod 20 are provided with elastic parts 11, and the elastic parts 11 are used for pushing the screw rod nut 40 towards the threaded area 21 when the screw rod nut 40 slides into the polished rod area 22, so that the screw rod nut 40 returns to the threads 212 of the threaded area 21 again to slide back and forth, and the transmission efficiency is improved; specifically, the elastic portion 11 may be, for example, a spring or an elastic rod, so as to exert a force that imparts a motion to the screw nut 40 to the threaded region 21 when the screw nut 40 enters the polish rod region 22, so that the guide sleeve 41 of the screw nut 40 is engaged with the screw thread 411 again, which is not limited herein; specifically, the lead screw 20 starts to reverse when the lead screw nut 40 enters the polish rod region 22, so that the lead screw nut 40 can slide reversely when the lead screw nut 40 returns to the threads 212 of the threaded region 21, thereby realizing the reciprocating motion of the lead screw nut 40.
Further, the screw region 21 includes a screw body 211 and a screw thread 212 screwed to the outer circumference of the screw body 211, and the end of the screw thread 212 has an inclination angle of 15 ° -20 °, for example, 15 ° and 20 °, to smoothly transition to the outer circumference of the screw body 211.
Further, the tip of the screw 411 has an inclination of 15 ° -20 °, for example, 15 ° -20 °, to smoothly transition to the inner ring surface of the guide bush 41; specifically, when the screw nut 40 enters the polish rod region 22, the elastic part 11 gives the screw nut 40 a force to the threaded region 21, so that the screw nut 40 moves a distance to the threaded region 21, at this time, the end of the screw thread 411 of the guide sleeve 41 is matched with the end of the thread 212 of the threaded region 21, so that the screw nut 40 slides smoothly onto the thread 212 of the threaded region 21, the screw nut 40 is prevented from being blocked due to collision between the end of the screw thread 411 and the end of the thread 212, the screw nut 40 is prevented from being damaged, and the screw nut 40 is promoted to smoothly enter the threaded region 21 from the polish rod region 22.
The above embodiments are only preferred embodiments of the present utility model, and are not limited to the present utility model, and all equivalent changes made according to the design key of the present utility model fall within the protection scope of the present utility model.
Claims (3)
1. A ball screw, characterized in that: the device comprises a base and a screw rod, wherein two ends of the screw rod are rotatably arranged on the base; the base is provided with a driving motor which is connected with and drives the screw rod to rotate, the middle part of the screw rod is provided with a threaded area, and two ends of the screw rod are provided with blank polish rod areas;
a screw rod nut is arranged in a sliding manner along the extending direction of the screw rod, guide sleeves are fixed at two ends of the screw rod nut, and screw teeth for being in threaded fit with the threaded area are arranged on the guide sleeves; elastic parts are arranged on bases at two ends of the screw rod and used for pushing the screw rod nut to the threaded area when the screw rod nut slides into the polished rod area.
2. A ball screw as defined in claim 1, wherein: the threaded region includes a screw body and threads threaded around the screw body, the ends of the threads having an inclination angle of 15 ° -20 ° to smoothly transition to the outer circumference of the screw body.
3. A ball screw as defined in claim 1, wherein: the tail ends of the screw teeth are provided with an inclination angle of 15-20 degrees so as to smoothly transition to the inner ring surface of the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321915915.6U CN220227708U (en) | 2023-07-20 | 2023-07-20 | Ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321915915.6U CN220227708U (en) | 2023-07-20 | 2023-07-20 | Ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227708U true CN220227708U (en) | 2023-12-22 |
Family
ID=89193515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321915915.6U Active CN220227708U (en) | 2023-07-20 | 2023-07-20 | Ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227708U (en) |
-
2023
- 2023-07-20 CN CN202321915915.6U patent/CN220227708U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of ball screw Granted publication date: 20231222 Pledgee: Bank of China Limited Xiamen hi tech Park sub branch Pledgor: XIAMEN OUBEI TRANSMISSION TECHNOLOGY Co.,Ltd. Registration number: Y2024980006542 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |