虚拟加工及其关键技术研究

虚拟加工的应用是当前产品零件加工的发展趋势。分析了虚拟加工的基本概念和内涵,在此基础上探讨了其关键技术,包括几何建模、数控代码翻译、干涉检验和材料切除仿真等,进而提出了一个虚拟加工系统的典型体系结构。最后介绍了清华大学国家CIMS工程技术研究中心开发的一个虚拟加工软件系统——通用加工过程仿真器(GMPS),该系统已初步应用于工程实际项目并取得良好效果。

Research on Virtual Machining and Its Key Techniques

The virtual machining represents a trend in the machining of product parts. In this paper, based on the analysis of the concept and connotation of virtual machining, some of its key techniques are discussed, including geometry modeling, numeric control code translation, interference detection and material removal simulation. A typical architecture of virtual machining system is presented, based on which, a virtual machining system named as General Machining Procedure Simulator (GMPS) is implemented at the national CIMS Engineering Research Center (CIMS-ERC) in Tsinghua University. Now the system has been applied to practical engineering projects and some benefits are gained.