一种实用的综合集成 DFA 系统的研究

Study on a practical synthetical integrated DFA system

传统的ＤＦＡ对下游影响产品装配性能的因素考虑不足，且难以生动直观地反映设计变更、评价过程与结果。针对这些缺陷，基于多项技术手段的综合利用，提出一种实用的集成化ＤＦＡ系统，可分析和验证产品的可装配性，分析和仿真机构的运动形态，提供合理、经济的装配公差分布，提供可行的装配顺序和路径，并以动画形式仿真整个产品的装配过程，从而在设计阶段实现产品的数字化预装配。系统已用Ｐｒｏ／Ｄｅｖｅｌｏｐ和Ｃ为工具开发实现，并在工程实际中得到应用。

Traditional DFA methods are lack of well consideration for those factors that influence assembly performance in later stages, and difficult to reflect design changes, evaluation procedure and results directly and dramatically. To cope with these problems, a practical integrated DFA system based on combination of multi technologies is proposed, with which product assemblability can be analyzed and verified, mechanism motion can be analyzed and simulated, reasonable and economical assembly tolerance can be assigned, feasible assembly sequence and trajectories can be provided, and then assembly procedure for the whole product can be animated, and, finally, digital pre assembly for the product can be realized at design stage. The system is implemented with Pro/Develop and C as development tools, and has been applied to an engineering project.