Abstract: The multi-assembly relations between the parts of product is described based on multi-assembly link graph. The fuzzy metric of the node and side of fuzzy link graph is used to measure the assemblability of product. The assembly feature of products can be recognized automatically and the neutral exchange data file of product assembly can be generated by means of the product assembly model established based on generalized link. The assemblability evaluation architecture of products is established. The assemblability fuzzy evaluation of products can be implemented based on the assembly knowledge and product assembly data. The information integration between CAD and DFA can be implemented.

Key words: Assemblability fuzzy evaluation, Fuzzy link strength, Generalized link, Multi-assembly link graph, Product assembly model