Transmission accuracy test rig for gearboxes based on servo motors

MA Tian-wen， ZHOU Jian-jun， ZHANG Ya-ping
（School of Mechanical Engineering， Hangzhou Dianzi University， Hangzhou 310018， China）

Abstract： In order to solve the problems of the complicated installation adjustment and the testing accuracy influence in the testing equipment of traditional gear box transmission accuracy，a novel method to test it with servo motor was investigated. This new way，which directly used the servo motor to integrate a driving motor and an encoder to realize the signal acquisition of both the actuator and torsion angle，simplified the transmission accuracy system structure. In the system，based on the hardware such as servo motor and data acquisition card，two servo motors were utilized as the actuator and the load at both the input and output shaft of the tested gear box. In addition，high frequency clock pulse was adapted to divide the encoder signal of the space pulse based on the LabVIEW. Then，transmission accurate curves of the tested gear box were displayed and the implementation of the system's software and hardware was explored initially，the experimental signals of the integrated servo-actuator encoder were acquired. The results indicate that the acquisition and reuse of the servo-actuator encoder signal are available，therefore，the method to measure the transmission accuracy of the gear box using a servo motor is feasible.
Key words： gearbox transmission accuracy； measuring； servo motor； subdivide