Product shape feature recognition based on entity model
XUE Chengqi, LIU Dingwei(School of Mechanical Eng., Southeast Univ., Nanjing 210096)
Based on the characteristics of entity model, the simple shape features are searched in the model feature space by starting with feature tier in it. According to the characteristics of the model, the geometric topologic relation on parts model of single feature is obtained, and the automatic shap feature recognition is realized. After further investigation on feature-based entity model, an approach about shape feature recognition of product is proposed. And a module of feature parameter extraction for microwave part is developed to implement automatic recognition and extraction for shape feature on complex part model. The method provides a way to quickly create part warehouse for enterprises, and lays the foundation for collaborative design and data sharing under network environment.