Research on Some Related Technologies in Virtual Assembly Simulation System

A virtual assembly simulation system of Plasma Enhanced Chemical Vapor Deposition(PECVD)Equipment is presented in this paper.The assembly model and the planning methods of assembly sequence and assembly path of the system are described.The scene framework of virtual assembly simulation is set up,and the Level of Detail technology is adopted to optimize the simulation scene.Moreover,in order to modify the assembly sequence and assembly path timely and conveniently,and describe exactly the information of position and gesture of components in the course of assembly or disassembly,a language code(V code)which describes virtual assembly and the function which describes correspondingly virtual assembly are presented.Finally,an interference checking algorithm based on hierarchical analysis of a containing box is presented,and the interference checking of assembly process is realized.The simulation system can help shorten the design cycle,improve design quality and reduce the assembly cost.