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Test bed for testing friction torque property of double ball screws

A ball screw, characteristic testing technology, applied in the direction of machine gear/transmission mechanism testing, measuring device, torque measurement, etc., can solve the problems such as the friction torque of the ball screw pair that does not appear

Inactive Publication Date: 2010-07-07
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no test device for measuring the friction torque of the ball screw pair at present.

Method used

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  • Test bed for testing friction torque property of double ball screws
  • Test bed for testing friction torque property of double ball screws
  • Test bed for testing friction torque property of double ball screws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] refer to figure 1 , figure 2 , the double-bar ball screw friction torque characteristic test bench of the present invention includes a base 1 and first and second servo motors 2 and 3 that are installed on the base 1 and controlled by a control system, and the first servo motor 2 is used for To drive the ball screw to be tested, the second servo motor 3 drives the reference ball screw 4, the two sides of the reference ball screw 4 are respectively equipped with linear guide rails 5, and the upper part of the two linear guide rails 5 is equipped with a workbench 6, the workbench 6 is fixed with the reference nut 7 on the reference ball screw 4, a load cell 8 is installed on the workbench 6, and there is a nut sleeve 9 for being installed on the nut of the ball screw to be tested, and the nut sleeve 9 is provided with a The detection end 81 of the load cell 8 is in contact with the cantilever 10 . Due to the adoption of the above-mentioned structure, this double-bar ba...

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Abstract

The invention discloses a test bed for testing friction torque property of double ball screws, which comprises a base, and first and second servo motors which are arranged on the base and controlled by a control system, wherein the first servo motor is used for driving a ball screw to be tested; the second servo motor is used for driving a reference ball screw; two sides of the reference ball screw are provided with a linear guide rail respectively, and the upper parts of the two linear guide rails are provided with a workbench; the workbench is fixed with a reference nut on the reference ball screw; the workbench is provided with a force measuring sensor and a nut sleeve which is arranged on a nut of the ball screw to be tested; and the nut sleeve is provided with a cantilever contacted with a detection end of the force measuring sensor. After the ball screw to be tested is connected with the first servo motor, the size of friction torque of a ball screw pair can be effectively measured by using a corresponding signal of the friction torque of the ball screw to be tested acquired by the force measuring sensor so as to improve the quality of a ball screw pair product and promote the dynamic performance of a numerical control machine.

Description

technical field [0001] The invention relates to a test bench for testing the friction moment characteristic of a double-bar ball screw. Background technique [0002] The ball screw pair is a screw transmission mechanism in which balls circulate in a closed loop by placing an appropriate amount of balls between the screw and the nut as the intermediate transmission body, and by means of the return channel of the balls. In the feed transmission system of CNC machine tools, ball screws are often used as transmission components. Can get a lot of thrust. [0003] Because the ball screw pair has the advantages of small frictional resistance and high transmission efficiency (92%~98%), it is widely used in mechatronic systems. The axial stiffness, pre-tightening force and running speed of the ball screw pair have a great influence on the working effect of the screw, and the analysis of the excitation source is one of the important contents of this research work. [0004] The fric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00G01L5/24G01M13/02
Inventor 康献民
Owner WUYI UNIV
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