Analysis of dynamic characteristic and structure optimization for parallel machine tool

摘要

A new method that the exciting vibration test is simulated to analyze the dynamic characteristic of parallel machine tool is proposed in the paper.The basic theory of exciting vibration and the principle of exciting vibration test on dynamic characteristic of parallel machine tool are researched,and the skeleton and design process of swept sine vibration test is also given.In order to obtain accurate simulation results,the rigid-flexible coupling system model of parallel machine tool is built in ADAMS software,which forms the exciting vibration simulation model.The exciting force is loaded on the coupling vibration system and brings displacement response,and then the curves of displacement response are obtained.According to the simulation results,the weak parts are effectively optimized and the simulation is carried out again on the optimized structure,then the simulation results are ideal and the deformation of weak parts is also reduced.Therefore the simulation method can effectively improve the dynamic characteristic of parallel machine tool.