基于Stewart机床的一种新结构

A New Architecture of Stewart Based Machine Tools

该文在分析目前虚拟轴机床研究和开发现状的基础上 ,提出一种新结构的虚拟轴机床 ,对其结构特点和性能进行论述 ,并对其工作空间、平台偏转角、精度和力特性问题作分析。应用达朗贝尔原理和虚位移原理 ,分析机床机构的动力学问题 ,并建立动力学方程 ;应用修改的Gauss Seidel迭代法 ,考虑活动平台作水平圆周运动情况 ,解出了动力学方程的数值解 。

This article puts forward a new architecture of virtual axis machine tools on the basis of the analysis of the current researches and development of the virtual axis machine tools. The structural features and performances of the new machines are under discussion, and the working envelope, platform orientation angle, precision and characteristics of forces of the new machines are analyzed. With application of the dynamic static force principle and the virtual displacement principle, the dynamic equations of the architecture of the machine are established. Considering the situation that moving platform moves in a circle line on the horizontal plane, applying the modified Gauss Seidel digital algorithm, the dynamical performances are extracted, finally the simulating solutions curves are drawn.