关键词: 增强现实, 机械设备拆装, 智能诱导, 计算机辅助设计

Abstract: To realize the mechanical equipments integration of 3D Computer Aided Design (CAD) model with assembly-disassembly guiding,a framework of CAD model-based assembly and disassembly intelligent guiding system was presented.Within the framework,a sequence guiding method was proposed based on assembly and disassembly precedence network model.In this method,the tree assembly and disassembly precedence network model was generated automatically in initial stage,and the assembly and disassembly sequence was planned online with operators in process of assembly and disassembly.Thus the relevant guiding information was input intelligently.To display virtual guiding scene in the given position of screen,a 3D virtual guiding scene generation and displaying method based on perspective projection principal was also proposed.According to the assembly and disassembly directions and bounding box of parts or components,the perspective projection principal were used to place the virtual guiding scene to position which could project the virtual guiding scene within the given position of screen.A prototype system was designed to verify the feasibility of above methods.

Key words: augmented reality, assembly and disassembly of mechanical equipment, intelligent guiding, computer aided design