关键词: 实例, 计算机辅助工艺设计, 有向装配关系图

Abstract: According to the concept of context process problem space,. the concept of Directed Assembly Relationship Graph(DARG) was put forward. The isomorph of DARG was defined. Case repository was constructed with DARG and common properties of parts. The algorithm to calculate the part similarity was presented. Based on the assembly relationship of components and the common parts properties, the process case-searching method oriented to products was designed, and its pseudocode was provided. At last, the application extent of the method was discussed.

Key words: case, computer aided process planning, directed assembly relation graph