关键词: 装配连接, 特征识别, 包容盒, 汽车车身, 装配建模

Abstract: Assembly connection relationships among components are crucial to multi-part assembly (e.g. auto-body) modeling in computer aided assembly process planning. A procedure to generate connection relationship was proposed by utilizing neutral STandard for the Exchange of Product model data (STEP) file. Firstly, an enveloped box for each part was constructed from lower geometrical information contained in STEP file. Then based on analysis of position intersection of different enveloped boxes, the rules reflecting mapping among intersections and parts assembly relationships were created and used to derive assembly connection information. A case study demonstrated the correctness and effectiveness of the proposed method.

Key words: assembly connection, feature recognition, enveloped box, auto-body, assembly modeling