CN112729648A - Ball friction torque testing device - Google Patents
Ball friction torque testing device Download PDFInfo
- Publication number
- CN112729648A CN112729648A CN202011619110.8A CN202011619110A CN112729648A CN 112729648 A CN112729648 A CN 112729648A CN 202011619110 A CN202011619110 A CN 202011619110A CN 112729648 A CN112729648 A CN 112729648A
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- CN
- China
- Prior art keywords
- ball screw
- testing device
- pressure
- torque testing
- spring assembly
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
- G01L5/0076—Force sensors associated with manufacturing machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a ball screw friction torque testing device, which comprises: the ball screw end of the ball screw to be tested is connected with the output end of the rotating motor through a torque testing device through a screw fixing tool; the torque testing device is a torque sensor connected between the output end of the rotating motor and the screw rod fixing tool through a coupler; the device comprises a pressure and tension sensor, a ball screw to be tested, a nut fixing tool, a pressure device, a tension device, a pressure spring assembly, a tension spring assembly and a pressure spring assembly, wherein the nut end of the ball screw to be tested is connected with the pressure and tension sensor through the nut fixing tool; the bottom of the pressure spring and the bottom of the tension spring assembly are provided with sliding blocks, and the loading motor drives the sliding blocks to move so as to realize displacement control of the pressure spring and the tension spring assembly. The invention can realize reading of the friction force of the ball screw under the forward rotation and the reverse rotation by setting the load.
Description
Technical Field
The invention relates to the field of ball screw detection, in particular to a ball screw friction torque testing device.
Background
Because the existing ball screw testing equipment basically adopts pressure unilateral loading in the manufacturing process, the reverse loading of the ball screw in the friction torque testing process cannot be guaranteed, and therefore the measured data can only adopt the friction force of forward rotation and cannot be read.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a ball screw friction torque testing device. The friction force under the forward rotation and the reverse rotation of the ball screw can be read by setting the load mode.
A ball screw friction torque testing device includes:
the ball screw end of the ball screw to be tested is connected with the output end of the rotating motor through a torque testing device through a screw fixing tool;
the torque testing device is a torque sensor connected between the output end of the rotating motor and the screw rod fixing tool through a coupler;
the device comprises a pressure and tension sensor, a pressure spring, a tension spring assembly, a pressure device and a tension spring assembly, wherein the nut end of the ball screw to be tested is connected with the pressure and tension sensor through a nut fixing tool;
the bottom of the pressure spring and tension spring assembly is provided with a sliding block, and the loading motor drives the sliding block to move so as to realize displacement control of the pressure spring and tension spring assembly.
In a preferred embodiment of the invention, the slide slides in the direction of a guide rail arranged at the lower part of the slide.
In a preferred embodiment of the invention, the guide rail is mounted on a base.
In a preferred embodiment of the present invention, the output shaft of the loading motor is provided with a screw rod, and the screw rod is connected with the sliding block to drive the sliding block to move.
In a preferred embodiment of the invention, the screw rod drives the tension spring assembly to compress to realize forward loading when rotating forwards, and drives the tension spring assembly to stretch to realize reverse loading when rotating backwards.
In a preferred embodiment of the present invention, the loading motor and the lead screw are disposed in the same direction as the compression spring and the tension spring assembly.
In a preferred embodiment of the invention, the pressure and tension sensor collects parameters of loading force, displacement and friction torque to be transmitted, and transmits the parameters to an external system to be stored and displayed.
In a preferred embodiment of the present invention, the rotating electrical machine and the torque testing device are mounted on a base through a support base.
The invention has the beneficial effects that:
the ball screw friction torque testing device can read the friction force under the forward rotation and the reverse rotation of the ball screw in a load setting mode.
Drawings
Fig. 1 is a first structural schematic diagram of the present invention.
Fig. 2 is a second structural schematic diagram of the present invention.
Fig. 3 is a third schematic structural diagram of the present invention.
Fig. 4 is a fourth schematic structural diagram of the present invention.
Detailed Description
The ball screw friction torque testing device shown in fig. 1 includes a ball screw 10 to be tested (generally, IBC ball screw), and a screw end of the ball screw 10 to be tested is connected with an output end of a rotating motor 8 (generally, a servo motor) through a screw fixing tool 9 by a torque testing device;
the torque testing device is a torque sensor 6 connected between the output end of the rotating motor 8 and the screw rod fixing tool 9 through couplers 5 and 7.
The rotating motor 8 and the torque testing device are mounted on the base 19 through the supporting base 3.
The screw end of the ball screw 10 to be tested is connected with a pressure and tension sensor 12 through a screw fixing tool 11, the other end of the pressure and tension sensor 12 is connected with a pressure device 15 and a tension device 13, and a pressure spring 1 and a tension spring assembly 2 are respectively arranged in the pressure device 15 and the tension device 13.
The bottom of the pressure spring 1 and the tension spring assembly 2 is provided with a slide block 4, the slide block 4 slides along the direction of a guide rail 14 arranged at the lower part of the slide block, and the guide rail 14 is arranged on a base 19.
The loading motor 18 respectively realizes displacement control of the pressure spring 1 and the tension spring assembly 2 by driving the slide block 4 to move.
The output shaft of the loading motor 18 is provided with a screw rod 16 for transmission, and is connected with the slide block 4 through the screw rod 16 so as to drive the slide block 4 to move. The loading motor 18 and the lead screw 16 are arranged in the same direction as the pressure spring 1 and the tension spring assembly 2, and the pressure device 15 and the tension device 13 can be movably connected through a bolt structure to ensure that the pressure spring 1 and the tension spring assembly 2 can be integrally positioned on the same plane.
The screw rod 16 drives the tension spring assembly 1 to compress to realize forward loading when rotating forwards, and the screw rod 16 drives the tension spring assembly 2 to stretch to realize reverse loading when rotating backwards.
In particular to a method for applying pressure to a pressure spring 1 component in a pressure device 15 by driving the rotation of a screw rod 16 to rotate through the rotation of a loading motor 18 when the screw rod 16 rotates forwards,
when the screw rod 16 rotates reversely, the loading motor 18 rotates to drive the screw rod 16 to rotate so as to apply tension to the tension spring assembly 2 in the tension device 13.
The advantages of such an arrangement are:
the ball screw to be tested is ensured to bear load when rotating forward and backward during testing, so that the testing device can be realized through two sets of devices, and the forward and backward rotation can be ensured to bear load when testing efficiency.
The conventional single spring loading device has the problem that the force transmission capability of the single spring is insufficient, and when the force of 50N is tested, the force can only be transmitted by 20-30N frequently, so that great force loss is caused, and the measurement is not accurate enough.
The inventor designs the device of the invention through a great deal of practice, and aims to effectively improve the force transmission capability of the whole device through the matching of the double-spring assembly, and when a 50N force is tested, the error is usually within +/-2N, so that the force loss is greatly reduced, and the measurement accuracy can be greatly improved. The pressure and tension sensor 12 collects the parameters of the loading force, the displacement and the friction torque to be transmitted, and transmits the parameters to an external system to be stored and displayed.
Firstly, respectively fixing a screw rod end and a nut end of a ball screw 10 to be tested on a screw rod fixing tool 9 and a nut fixing tool 11;
then, fixing the lead screw end of the ball screw with the tooling fixed at the two ends at the end of a rotating motor, and fixing a nut at a loading end (the lead screw end and the nut end can be inverted according to the test requirement);
and setting various testing parameters according to testing requirements, selecting a proper spring and a proper tension and pressure sensor according to the size of the load, checking that the installation is finished, and testing by turning on a switch.
Claims (8)
1. The utility model provides a ball friction torque testing arrangement which characterized in that includes:
the ball screw end of the ball screw to be tested is connected with the output end of the rotating motor through a torque testing device through a screw fixing tool;
the torque testing device is a torque sensor connected between the output end of the rotating motor and the screw rod fixing tool through a coupler;
the device comprises a pressure and tension sensor, a pressure spring, a tension spring assembly, a pressure device and a tension spring assembly, wherein the nut end of the ball screw to be tested is connected with the pressure and tension sensor through a nut fixing tool;
the bottom of the pressure spring and tension spring assembly is provided with a sliding block, and the loading motor drives the sliding block to move so as to realize displacement control of the pressure spring and tension spring assembly.
2. The ball screw friction torque testing device according to claim 1, wherein said slider slides in the direction of a guide rail provided at a lower portion of the slider.
3. The ball screw friction torque testing device of claim 1, wherein said guide rail is mounted on a base.
4. The ball screw friction torque testing device according to claim 1, wherein the output shaft of the loading motor is provided with a screw rod, and the screw rod is connected with the sliding block to drive the sliding block to move.
5. The ball screw friction torque testing device according to claim 4, wherein the screw rod drives the tension spring assembly to compress for forward loading when rotating forward, and drives the tension spring assembly to stretch for reverse loading when rotating backward.
6. The ball screw friction torque testing device according to claim 1, wherein said loading motor and screw are co-directionally arranged with said compression spring and tension spring assembly.
7. The ball screw friction torque testing device according to claim 1, wherein the pressure and tension sensor collects loading force, displacement and friction torque parameters for transmission, and transmits the parameters to an external system for storage and display.
8. The ball screw friction torque testing device according to claim 1, wherein said rotating electrical machine and said torque testing device are mounted on a base through a support base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619110.8A CN112729648A (en) | 2020-12-30 | 2020-12-30 | Ball friction torque testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619110.8A CN112729648A (en) | 2020-12-30 | 2020-12-30 | Ball friction torque testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112729648A true CN112729648A (en) | 2021-04-30 |
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ID=75608132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011619110.8A Pending CN112729648A (en) | 2020-12-30 | 2020-12-30 | Ball friction torque testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112729648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152382A (en) * | 2021-12-03 | 2022-03-08 | 山东建筑大学 | Device and method for measuring friction moment of ball screw roller pair based on axial loading |
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
-
2020
- 2020-12-30 CN CN202011619110.8A patent/CN112729648A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152382A (en) * | 2021-12-03 | 2022-03-08 | 山东建筑大学 | Device and method for measuring friction moment of ball screw roller pair based on axial loading |
| CN114152382B (en) * | 2021-12-03 | 2024-04-26 | 山东建筑大学 | Axial loading-based ball screw pair friction moment measuring device and method |
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
| CN116067651B (en) * | 2023-03-07 | 2023-06-09 | 四川大学 | Test method of in-situ equivalent test system based on ball friction and motion |
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