The knowledge discovery procedure consists of three steps:1)Fuzzy feature-based representation of stamping parts;2)Fuzzy-classi- fication of design cases;an.

• 该知识发掘过程包括:(1)冲压零件基于特征的模糊表达;(2)冲压事例的模糊聚类;(3)基于粗糙集的规则获取。