基于UG的五轴后置处理器实现与运动学模型研究

摘要

文章对五轴机床控制系统在开启或者关闭RPCP功能模式下,基于UG的后置处理器的实现及双转台五轴机床的运动学模型进行了研究.在分析了RPCP的功能特点后,以牧野V33-5XB五轴立式加工中心后置处理器的开发为例,阐述了G43.4代码的设置流程及RPCP与非RPCP模式下"机床"参数项的不同设置,由此论证RPCP功能对后置处理器构建的影响.最后在分析双转台五轴机床的坐标系平移与旋转变换关系图的基础上,提出线性变换矩阵及逆矩阵的运动学模型,并推导出两旋转轴运动及三轴直线轴运动的坐标公式.%In this paper,the implemention of post processor based on UG and the kinematic model of the 5-axis machine tool with dual rotary tables are studied under the condition of opening or closing the RPCP function in the five axis NC system. Based on the analysis of function features of RPCP, a case study was made on the development of post processer for Makino V33-5XB 5-axis vertical machine tool. The paper al-so introduce the setting procedure of G43.4 code and explain the different setups in'machine tool' parame-ter item under RPCP and NO-RPCP model. As a result, the influence of RPCP on post processor is clari-fied. Finally,based on the analysis of the schematic about the coordinate translation and rotation in 5-axis machine tool with Dual Rotary Tables,the kinematic model of linear transformation matrix and inverse ma-trix are presented. And then the formulas of coordinate regarding two rotational motions and three linear mo-tions are derived.