基于中面的注塑产品特征识别

Feature Recognition of Molded Part Product Based on Middle Face

摒弃传统的基于实体模型的特征识别方法,提出基于中面模型的方法。首先提出了适合于中面模型的表达方法:面-边属性图和面-边属性矩阵;然后针对注塑产品的特点,对特征进行了分类,将其分为面特征、连接特征和加强特征;最后对中面模型的中面、边环和边的几何拓扑特征进行了分析,分别研究了基于中面的特征识别算法,给出了算法实现方法和实例。

The conventional feature recognition method was abandoned here and a method based on middle face model was proposed.Firstly,the appropriate method was proposed to represent middle face model,i.e.face-edge attribute graph and face-edge attribute matrix.Secondly,according to characteristics of molded product,features were classified into face feature,link feature and strengthen feature.Thirdly,based on analyzing topology and geometry characteristics of the faces,edge loops and edges in middle face models,feature recognition methodology based on middle face model was researched respectively.Lastly,algorithm implementation method and a case study were presented.