零件分类, 约束满足等级, 尺寸约束网络, 变型设计复杂性, 变型设计

Based on the classification of parts on the context of mass customization, the dimension constraint satisfaction priorities corresponding to different types of parts were defined, and dimension constraint network of parts was analyzed as well. Complexity of part variant design was formulated based on dimension constraint, and the complexity of part variant design was contrasted in the condition of before and after part classification. According to the resource characteristics of different types of parts, each type of parts should implement its own variant design strategy. Then the variant design of assembly constitution of multi-parts was realized through the construction of variant design master model, the similarity measure among parts, and the dynamic analysis of part variant design. Finally, a case study was given out to verify the methods and principles mentioned. The results show that the complexity of part variant design increases after part classification, and the variant design requirements of some parts are delayed because of different variant design strategies for different types of parts. And reuse level of all types of parts in assembly variant is increased in the end.