关键词: 描述逻辑, 几何公差, 表示模型, 公差类型, 自动生成

Abstract: To make tolerance information be better understood by computers,description logic was introduced to the research of tolerance design.Proceeding from the basic spatial relations among geometric features,a Geometric Tolerance Description Logic (GTDL) (Df) was presented,and Tableau decision algorithm for GTDL (Df) was given.GTDL (Df) representation model of geometric tolerance was constructed by using descriptive ability of GTDL (Df).On this basis,an automatic generation algorithm of tolerance types was designed by means of the Tableau decision algorithm.The effectiveness of proposed generation algorithm was demonstrated through a practical example.

Key words: description logic, geometric tolerance, representation model, tolerance types, automatic generation