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《JOURAAL OF COMPUTER AIDED DESIGN & COMPUTER GRAPHICS》 1999-02
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STUDY ON AN ASSEMBLY SIMULATION SYSTEM IN CE AND ITS KEY TECHNOLOGIES

ZHANG Lin Xuan TONG Bing Shu (Department of Precision Instruments & Mechanology, Tsinghua University, Beijing 100084)  
Conventionally, DFA methods are table chart based and are lacking in visualization, even though application of them can improve product assemblability significantly. As a complementary approach to DFA, an assembly simulation system is presented in this paper, with which a product at design stage can be pre assembled dramatically, meanwhile its assembly process plans can be verified and improved. Two of the key technologies for the system are emphasized: the first is an 11 tuple representation for assembly/disassembly movement and its transforms which enable arbitrary element movements in an assembly to be simulated, the second is a gradual algorithm which provides a fast and efficient way of validity check for assembly trajectories. Now, based on the commercial CAD software Pro/Engineer, the system is implemented with C and Pro/Develop, and has been used as a visualization tool of DFA in an engineering project.
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