Research And Development Of The Precision Reducer Testing System

Due to its wide range of transmission ratios,compact structure and high precision,precision retarders are commonly used in applications such as industrial robots,numerical control equipment and aerospace industries that require high accuracy.Aiming at the requirements of the use of speed reducers for industrial robots,a set of test systems is developing that can achieve measure about comprehensive performance parameters of Precision Reducer,Such as RV and harmonics for industrial robots.The system mainly completes the measurement of the transmission precision,backlash,torsional stiffness,hysteresis,mechanical efficiency,start-stop torque and no-load friction torque performance of the precision reducer.Based on a large number of experimental data to evaluate the performance parameters of the tested speed reducer,it can be used as a reference for the design.This paper build a test platform based on the test requirements of the reducer and designs a comprehensive test system based on the virtual instrument technology and testing the performance parameters of the reducer.The main contents include the following aspects.1.Firstly,the main performance parameters of industrial robots such as RV,harmonics,etc.are analyzed.Then,reference is made to the national standards and common test methods at home and abroad to determine the test methods and calculation methods for each parameter of the system reducer.2.According to the test requirements of the precision reducer,the dynamic model of the input/output of the reducer is established based on MATLAB/Simulink and the influence of the mechanical structure on the torque fluctuation of the reducer load end is analyzed.3.Combining virtual instrument technology and LabVIEW graphical programming language,a human-machine interface that can control and monitor the entire test process is designed,it mainly including the design of software architecture and the design of each sub-module such as motor control module,data acquisition module,etc.After nearly a year of debugging,the system has been tested on the existing test platform.The test has achieved good results and achieved the expected function.