Comprehensive performance test bench for planetary roller screw

Abstract

The invention discloses a comprehensive performance test bench for a planetary roller screw. A driving assembly provides power for the planetary roller screw; a test assembly is used for mounting a planetary roller screw of a different model; a hydraulic loading assembly is adopted to carry out dynamic and static loading on a planetary roller screw nut, load borne by the planetary roller screw during actual work is simulated, and a force closed loop is adopted to ensure accuracy of the loading force. The test bench is provided with a torque sensor, an angle encoder, a circular magnetic grating, a grating ruler, a LVDT, and a force sensor. Measurement on torque, an angle, displacement and force is realized through the sensor. Through analyzing the test data, test on performance of the position precision, the speed, the acceleration, the transmission efficiency, the transmission clearance and the axial stiffness of the planetary roller screw of the different model in the load state can be completed. The test bench has the advantages of simple and flexible structure, thorough and accurate test performance parameters, high loading precision and strong test scalability.

Description

technical field [0001] The invention relates to a performance testing device for a high-speed precision transmission pair, in particular to a comprehensive performance testing test bench for a planetary roller screw pair. Background technique [0002] The planetary roller screw mechanism is a mechanical device that can convert rotary motion and linear motion. It is mainly composed of three parts: screw, roller, and nut. At present, the commonly used linear actuator is mainly the ball screw. Because the planetary roller screw uses threaded rollers instead of balls as the force transmission unit, compared with the ball screw, the force transmission unit has a larger contact radius and more contact points, so in position accuracy, Rated load, rigidity, speed, life, etc. are superior to ball screws, and have been widely used in linear electromechanical actuators, precision machine tools, food packaging machinery, and hoisting machinery in recent years. [0003] At present, my ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems in the prior art that the performance test of the planetary roller screw pair is single and cannot simulate its actual working conditions, the present invention proposes a comprehensive performance test bench for the planetary roller screw pair, which can complete Tests of positioning accuracy, speed, acceleration, transmission efficiency, transmission clearance, and axial stiffness of different types of planetary roller screw pairs under load

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