并行工程中的装配仿真系统及其关键技术研究

传统的图表分析型ＤＦＡ虽然对改进产品的可装配性有显著作用，但其可视化程度较差。为弥补这一不足，提出了一种装配仿真系统，可在产品设计阶段生动直观地进行预装配，验证了改进产品的装置工艺。着重介绍了系统的２个关键技术：装／拆运动的１１元组表示及变换可实现装配元件任意运动的模拟，闱配路径有效性检查的递进算法能较大程度地提高运算效率。该系统已在商用ＣＡＤ软件Ｐｒｏ／Ｅｎｇｉｎｅｅｒ 的基础上用 Ｃ和Ｐｒｏ／Ｄ

STUDY ON AN ASSEMBLY SIMULATION SYSTEM IN CE AND ITS KEY TECHNOLOGIES

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.