Abstract
Complex product is usually decomposed into various levels subassembly at assembly planning stage to achieve efficient production. Adjusting directly design structure tree of product in digital system is an important way for rapidly partitioning various levels subassembly. However, assembly reorganization, such as adjusting and modifying design structure tree, is very difficult in commerce CAD systems for their rigid limitation of assembly model. In this paper, the assembly information was firstly introduced. An assembly relationship representing model based on Assembly Relationship Element(ARE) was proposed, which associates flexibly assembly relationship information with hierarchical structure information. Organizing and storage mechanism of assembly information in assembly file were also presented. Based on analysis of reorganizing modes, dynamic management methods of assembly information in assembly files during reorganizing structure tree were proposed in details. Case study of universal transmission machine was finally given in digital assembly prototype system to verify the above research results.
