基于UG的五轴数控机床加工仿真.pdfVIP

第23 卷 第1 期 计 算 机 仿 真 2006 年1 月 文章编号：1006 - 9348（2006 ）0 1 - 0215 - 04 基于UG 的五轴数控机床加工仿真 纪玉坤，曹利新 （大连理工大学机械工程学院，辽宁大连 116024 ） 摘要：目前多数五轴数控机床仿真系统，一般只提供二维的动画仿真，而且仿真系统的几何造型功能十分有限，零件和机床 模型需要在其他CAD 软件中进行建模，然后导入数控仿真系统。由于文件格式的转化，零件的CAD 模型将会产生误差，降 低了仿真精度。该文利用UG CAD/ CAM 软件造型功能建立五轴数控机床和零件模型，读取数控代码对机床各部件进行三 维运动仿真，并对加工过程中机床运动部件之间的干涉及工件过切进行检查，建立干涉实体，为刀具轨迹的修改提供依据， 同时免除了文件格式的转化产生的误差。 关键词：五轴数控加工；加工仿真；干涉检查 中图分类号： TP391. 9 文献标识码：B 5 - axis Machining Simulation Based on Redevelopment of UG JI Yu - kun ，CAO Li - xin （Schooi of Mechanicai Engineering ，Daiian University of Technoiogy ，Daiian Liaoning 116024 ，Chian ） ABSTRACT ：Today most machine simuiation systems virtuaiiy are based on the extended Z - buffer aigorithm which basicaiiy oniy provides 2D image. And the interaction of those simuiation systems with CAD software is aiso iimited. The accuracy wiii be reduced during the data exchange. The increased and improved avaiiabiiity of CAD/ CAM soft- ware provides exceiient surface modeiing abiiity，makes it possibie to simuiate the whoie process of machining. A ma- chine simuiation system for 5 - axis miiiing is presented in this paper to detect machine coiiisions. The information of machine tooi and workpiece is used for UG CAD/ CAM software to construct the machine and workpiece modeis，whiie the NC program is used as input data to perform the machine motion. During the simuiation ，overcut and coiiisions between the moving machine components can be checked. And the error of data exchange can be avoided. KEYWORDS ：5 - axis NC machining ；Machining simuiation ；Coiiision