A cross-thread engagement friction and wear test device and test method

By designing a cross-thread meshing friction and wear test device and controlling the motion state of the main screw and rollers, the friction and wear test of the planetary roller screw was realized, which solved the problem that the friction and wear law could not be tested in the existing technology, and improved the transmission efficiency and reliability.

CN122409183APending Publication Date: 2026-07-17BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
Filing Date
2026-04-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies have failed to conduct friction and wear tests on planetary roller screws under multi-roller meshing contact with the main screw, thus failing to effectively test the friction and wear patterns and affecting transmission efficiency and reliability.

Method used

A cross-thread meshing friction and wear test device was designed. By controlling the rotation of the main screw, the rotation of the rollers, the revolution of the rollers, and the axial load, the sliding, rolling, and rolling friction and wear of multiple rollers with the main screw are simulated. An electric cylinder and a synchronous belt pulley are used to drive the rotation and movement of the rollers to achieve friction and wear testing under different working conditions.

Benefits of technology

Friction and wear tests were conducted under the meshing contact of multiple rollers with the main screw to obtain the friction and wear characteristics under different speeds and axial loads, thereby reducing friction and wear and improving the transmission efficiency and reliability of the planetary roller screw.

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Abstract

The present application relates to a kind of cross thread engagement friction and wear test device and test method, belong to screw transmission mechanism field;Including support base plate, ball screw nut, first gear drive motor, sliding table, sliding guide, ball screw, synchronous belt, first synchronous pulley, second synchronous pulley, first connector, cantilever support frame, roller, second connector, main screw and bearing support;The present application is simulated by complete simulation planetary roller screw main screw outer thread and roller outer thread engagement contact mode, control main screw rotation, roller rotation, roller revolution, roller axial load, realize the sliding of multiple rollers and main screw engagement contact, rolling, rolling and sliding friction and wear test, obtain the friction and wear law of main screw and roller under different rotational speed and different axial load, lay the foundation for reducing friction, reducing wear, improve planetary roller screw transmission efficiency and work reliability.
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