CN215767469U - Measuring device for friction moment of ball screw pair - Google Patents
Measuring device for friction moment of ball screw pair Download PDFInfo
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- CN215767469U CN215767469U CN202122018294.9U CN202122018294U CN215767469U CN 215767469 U CN215767469 U CN 215767469U CN 202122018294 U CN202122018294 U CN 202122018294U CN 215767469 U CN215767469 U CN 215767469U
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- ball screw
- measuring
- torque
- rolling bodies
- friction
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Abstract
The utility model discloses a measuring device for the friction torque of a ball screw pair, which comprises a ball screw, a screw nut and a torque measuring mechanism, wherein a supporting assembly is used for detecting the friction torque; according to the measuring device, the ball screw 1 is lapped on the supporting assembly, and direct measurement is performed through the torque measuring mechanism, so that the measuring cost is low, the operation is simple, convenient and flexible, and the measuring efficiency is high; the arrangement of the rolling bodies does not block the rotation trend of the ball screw, reduces other friction force additionally generated when the ball screw transmits the friction torque of the ball screw pair to the torque measuring mechanism, and improves the measuring precision of the torque measuring mechanism.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to a measuring device for the friction torque of a ball screw pair.
Background
The ball screw pair is a key component of a mechanical transmission system, is widely applied to equipment such as a machine tool, and has higher and higher requirements on the performance of the ball screw pair by users along with the development of the equipment such as the machine tool towards high speed and high precision, wherein the friction torque of the ball screw is an important index of the performance of the screw.
At present, the measuring devices of the friction torque of the ball screw pair are various, but the measuring devices are complex and high in cost, and in addition, the two ends of the screw are required to be fixed during measurement, so that the measuring efficiency is low.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems in the background art, the utility model provides a measuring device for the friction torque of a ball screw pair, which is simple, convenient and flexible to operate, low in measuring cost and high in measuring efficiency.
The utility model provides a device for measuring the friction torque of a ball screw pair, which comprises a ball screw, a screw nut and a torque measuring mechanism, wherein a supporting assembly is used for detecting the friction torque, the screw nut is in threaded connection with the periphery of the ball screw, two supporting assemblies are respectively arranged at two ends of the ball screw, the ball screw is in lap joint with the supporting assemblies, and the torque measuring mechanism is fixedly connected with the end part of the ball screw.
Furthermore, the supporting component comprises a supporting seat and rolling bodies, the two rolling bodies are rotatably arranged on the supporting component, and the ball screw is respectively arranged in a tangent mode with the two rolling bodies.
Furthermore, a long waist hole is formed in the supporting seat, and the end parts of the two rolling bodies can be movably fixed in the long waist hole.
Further, the ball screw and the two rolling bodies are respectively arranged in parallel.
Furthermore, a driving mechanism is arranged on one side of the screw nut, the output end of the driving mechanism is connected with the screw nut, and the driving direction of the driving mechanism is parallel to the ball screw.
The device for measuring the friction torque of the ball screw pair has the advantages that: according to the measuring device for the friction torque of the ball screw pair, provided by the structure, the ball screw 1 is lapped on the supporting assembly and is directly measured through the torque measuring mechanism, so that the measuring cost is low, the operation is simple, convenient and flexible, and the measuring efficiency is high; the arrangement of the rolling bodies does not block the rotation trend of the ball screw, reduces other friction force additionally generated when the ball screw transmits the friction torque of the ball screw pair to the torque measuring mechanism, and improves the measuring precision of the torque measuring mechanism.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the device comprises a ball screw, a screw nut, a support assembly, a support seat and a rolling body, wherein the ball screw is 1-2-3-31-32-rolling body.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
As shown in fig. 1, the device for measuring the friction torque of the ball screw pair according to the present invention includes a ball screw 1, a screw nut 2, support assemblies 3 and a torque measuring mechanism for detecting the friction torque, wherein the screw nut 2 is screwed on the periphery of the ball screw 1, the two support assemblies 3 are respectively disposed at two ends of the ball screw 1, the ball screw 1 is lapped on the support assemblies 3, and the torque measuring mechanism is fixedly connected to the end of the ball screw 1.
The two ends of the ball screw 1 are supported by the supporting component 3, and meanwhile, the two ends are in a lap joint relationship, namely, the ball screw 1 and the supporting component 3 are in a non-fixed relationship, so when the rotary screw nut 2 moves along the axial direction of the ball screw 1, the ball screw 1 has a rotating tendency because friction exists between the ball screw 1 and the screw nut 2, but because the end part of the ball screw 1 is fixed with the torque measuring mechanism, the rotating friction force is transmitted to the torque measuring mechanism through the ball screw 1, and the size of the friction torque is detected by the torque measuring mechanism.
In the embodiment, the lead screw nut 2 can be rotated manually at a constant speed or driven by a driving mechanism to rotate at a constant speed, wherein when manpower is adopted, the measurement cost is low, the operation is simple, convenient and flexible, and meanwhile, the measurement precision can meet the requirements, and the requirements of small enterprises on low cost and relatively high precision are met; when the driving mechanism is adopted, the driving direction of the driving mechanism is parallel to the ball screw 1, so that the driving mechanism can drive the screw nut 2 to rotate when working, and the following mode can be adopted for driving the screw nut 2 by the driving mechanism specifically: on one hand, the driving mechanism is rotationally connected with the screw nut 2, and the extension end of the driving mechanism extends and retracts in the axial direction of the ball screw 1 to drive the screw nut 2 to rotate; on the other hand, the gear can be sleeved on the periphery of the screw nut 2, the output end of the driving mechanism is also connected with the gear, and the two gears are meshed with each other to drive the screw nut 2 to rotate.
In this embodiment, in order to reduce rolling friction between the ball screw 1 and the support assembly 3, the support assembly 3 includes a support seat 31 and two rolling bodies 32, the two rolling bodies 32 are rotatably disposed on the support assembly 3, the ball screw 1 is respectively disposed in a tangent manner with the two rolling bodies 32, and the rolling bodies 32 may be bearing members or other rolling members.
The two rolling bodies 32 are arranged on the supporting seat 31 in a parallel rotating mode, so that a certain space gap is formed between the two rolling bodies 32, two ends of the ball screw 1 are overlapped above the space gap and are connected with the two rolling bodies 32 in a tangent mode, the tangent rolling mode reduces other friction force generated when the ball screw 1 transmits the friction moment of the ball screw pair to the torque measuring mechanism, and the measuring accuracy of the torque measuring mechanism is improved.
In this embodiment, in order to improve that the supporting assembly 3 can be suitable for ball screws 1 with different diameters, a long waist hole can be formed in the supporting seat 31, the end portions of the two rolling bodies 32 can be movably fixed in the long waist hole, and the gap between the two rolling bodies 32 is adjusted according to the diameter of the ball screw 1, so that the ball screw 1 and the two rolling bodies 32 are tangential and the rotating tendency of the ball screw 1 is not hindered.
Meanwhile, the ball screw 1 and the two rolling bodies 32 are respectively arranged in parallel, so that the rotation friction between the ball screw 1 and the two rolling bodies 32 can be reduced to a greater extent, and the measurement precision of the torque measurement mechanism is further improved.
The working process is as follows: the ball screw pair is lapped on the supporting component 3, any end of the ball screw 1 is connected with a torque measuring mechanism, the screw nut 2 is manually rotated at a uniform speed, the friction torque is transmitted to the ball screw 1 through the screw nut 2, then the numerical value displayed on the torque measuring mechanism is observed, when the numerical value tends to be stable, the numerical value is read, and the numerical value is the friction torque of the ball screw pair.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a measuring device of ball screw pair frictional force moment, a serial communication port, including ball screw (1), screw-nut (2), supporting component (3) and the torque measurement mechanism who is used for detecting frictional force moment, screw-nut (2) spiro union is in ball screw (1) periphery, two supporting component (3) set up respectively in the both ends of ball screw (1), ball screw (1) overlap joint is on supporting component (3), the tip fixed connection of torque measurement mechanism and ball screw (1).
2. The device for measuring the friction torque of a ball screw pair according to claim 1, wherein the support assembly (3) comprises a support base (31) and two rolling bodies (32), the two rolling bodies (32) are rotatably disposed on the support assembly (3), and the ball screw (1) is respectively disposed tangentially to the two rolling bodies (32).
3. The device for measuring the friction torque of a ball screw pair as claimed in claim 2, wherein the support base (31) is provided with a long waist hole, and the ends of the two rolling elements (32) are movably fixed in the long waist hole.
4. A device for measuring the friction torque of a ball screw pair according to claim 2, characterized in that the ball screw (1) is arranged parallel to each of the two rolling bodies (32).
5. A device for measuring the friction torque of a ball screw pair according to any of claims 1 to 4, characterized in that a driving mechanism is arranged on one side of the screw nut (2), the output end of the driving mechanism is connected with the screw nut (2), and the driving direction of the driving mechanism is parallel to the ball screw (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122018294.9U CN215767469U (en) | 2021-08-24 | 2021-08-24 | Measuring device for friction moment of ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122018294.9U CN215767469U (en) | 2021-08-24 | 2021-08-24 | Measuring device for friction moment of ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215767469U true CN215767469U (en) | 2022-02-08 |
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ID=80078543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122018294.9U Active CN215767469U (en) | 2021-08-24 | 2021-08-24 | Measuring device for friction moment of ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215767469U (en) |
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2021
- 2021-08-24 CN CN202122018294.9U patent/CN215767469U/en active Active
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