| With the development of CAD and database technology, various intelligence theroies was presented for reusing design knowledge and promoting design quality and efficiency. Design knowledge can be discovered and acquired and utilized by CAD system facing industry application utmostely, which accord with enterprise requirement.Based on the autual application of Unigraphics, corresponding CAD model quality control standard was formulated and implemented. With the development of knowledge driven CAMFS, the paper presented knowledge represent-mine-utilized model of fixture design, lucubrated the algorithem mining complex dimension associate rules, discussed the resoning-hermeneutic mechenism of fixture design amply, and implemented rule-resonning based fixture design modual. Finally, some opinions and advices were presented on the further research.The module was utilized well in one super aeronautic corporation for developing national Aviation Project.
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