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Comprehensive performance test bench for planetary roller screw

A comprehensive performance test and planetary roller technology, which is applied in the direction of machine gear/transmission mechanism test, etc., can solve the problems of single performance test of planetary roller screw pair and inability to simulate actual working conditions, and achieve high loading accuracy and flexibility Strong, scalable effects

Inactive Publication Date: 2016-08-24
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Comprehensive performance test bench for planetary roller screw
  • Comprehensive performance test bench for planetary roller screw
  • Comprehensive performance test bench for planetary roller screw

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Experimental program
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Embodiment Construction

[0024] This embodiment is a comprehensive performance test bench for a planetary roller screw pair.

[0025] refer to Figure 1 to Figure 6, the comprehensive performance test bench of the planetary roller screw pair in this embodiment consists of a test bench bottom plate assembly 1, a drive assembly 2, a coupling 3, a test assembly 4, a threaded push rod nut 5, an internal force rod 6, and a hydraulic loading assembly 7. The internal force rod nut 8, the hydraulic loading base 9, the hydraulic loading rear base 10, and the hydraulic cylinder fixing screw 11 are composed. The drive assembly 2 is used to drive the planetary roller screw pair to drive the screw to rotate. Test assembly 4 is used to install different types of planetary roller screw pairs. The hydraulic loading assembly 7 is used to provide load for the planetary roller screw pair to simulate its actual working condition. The bottom plate assembly 1 of the test bench is used to support parts connected to the t...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
CPCG01M13/02
Inventor 刘更朱忠良佟瑞庭马尚君付晓军张鹏涛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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