基于蒙特卡洛法的并联机床误差分析

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以3一TPT并联机床为样机，就驱动杆杆长误差以及铰链点间隙误差对其运动平台位置误差的影响建立了误差模型，然后根据蒙特卡洛法对误差模型进行抽样，并用Matlab软件对其进行了仿真分析。从仿真结果可以看出，同时作用所产生的并联机床运动平台的位置综合误差在0．56～0．75mm之间，为连杆杆长误差以及虎克铰累积间隙误差的1／2．3～1／1．7，即小于输入累积误差之和。进而说明3-TPT并联机床的累积误差较小，且误差小于分别作用时的误差之和。

3 -TPT parallel machine tool for the prototype, the error model was established by con- sidering the impacts of the length error of the drive rod and the position error of the hinge point on the position error of the moving platform. And then, carry out sampling error model based on the Monte Carlo method. Also,the Matlab software is used to simulate and analysis it. As can be seen from the simulation results. Its simultaneously effect of parallel machine tool motion platform position of comprehensive error roughly in between 0. 56 - 0. 75 mm,it＇s about the linkage lever long error and Hooke joint cumulative gap error 1/2. 3 - 1/1. 7, that is less than the input cumulative error sum. Then explain the 3 -TPT parallel machine tool cumulative error is small, and the error is less than respectively effect of the error sum.

并联机床，误差，仿真，parallel machine tool，error，simulation。

基于蒙特卡洛法的并联机床误差分析。