面向过程的产品自适应装配设计

Self-Adaptive Assembly Modeling for Product Design Process

为建立适合计算机表示的产品信息模型 ,提出了面向设计过程的产品自适应装配信息建模理论和方法。初始装配设计 :从产品的功能需求出发 ,初步确定实现产品功能的主要零部件 ,主要零部件的装配约束关系 ;零件详细设计 :继承初始装配设计中确定的零件结构和尺寸信息 ,对零件结构进行详细设计 ;自适应装配重构 :随着零件结构的细化 ,或零件之间的约束关系的改变 ,相应的装配模型在继承初始装配设计的过程信息和约束信息的基础上 ,进行零件约束关系的搜索和匹配 ,自适应重构装配体。各设计阶段反复、循环地进行 ,每一次设计循环都更趋近目标设计结果 ,直至达到产品的所有设计需求。实践证明 ,自适应装配信息建模方法应用到产品设计中 ,可以提高产品的设计效率和设计质量。

To establish a product information model suited to computer description, theory and method of self-adaptive assembly modeling for the process were proposed in the paper. A mechanism of design recycle was established, initial assembly design stage: commencing with function requirements, important structures of parts or subassemblies as well as assembly constraint relations should be defined; detailed design stage: part structures are refined based on inheriting structural and dimensional information decided by initial assembly design stage; self-adaptive assembly reconstruction stage: with the refinement of part structures or constraint relation modification, part constraint relations must be searched and matched, and the assembly model is reconstructed. The design stages undergo iteratively. Every design cycle approaches to the final design result till all function requirements of the product are satisfied. With the self-adaptive assembly system applied to product design, design efficiency are improved greatly.