关键词: 特征识别, 相交特征, 属性邻接图, 产品模型数据交换标准, 数控

Abstract: To recognize 2.5D interacting feature effectively,a new feature recognize algorithm was proposed based on graphics and hint.The part model was handled with this algorithm,and the machining feature faces were extracted which could reduce the search space of part graphics but not affect the recognition accuracy.Through establishing the interacting feature split factor queue and using the combined method of automatic and interactive compute,the optimal dependent feather faces were confirmed.According to the feature face,the manufacturing features defined by STandard for the Exchange of Product model data for Numeric Control (STEP-NC) were encoded which could match the feature accurately and effectively by Comparing with sub-graphic and rule matching.The effectiveness and feasibility of proposed algorithm was verified by practical experiment.

Key words: feature recognition, interacting feature, attributed adjacency graph, standard for the exchange of product model data, numerical control