关键词: 夹具设计；几何推理；特征识别；CAFD

Abstract:

Aiming at the low level of automation of case retrieval in case-based design,the variant
design used in case-based fixture design was studied in detail.To fit the variant design of fixture,the feature socket model of fixture was presented based on the full-information
of fixture parts.Based on this model,feature based fixture automotive variant design
was realized based on geometry reasoning.In this process,the similarity of
feature was compared and constraints was solved.The automotive reuse of
cases can be realized by the method that explores a new way for automotive design of fixture. 

Key words: fixture design;geometry reasoning;feature recognition, CAFD (computer aided fixture design)