%0 Journal Article
%T STEP格式钣金模型特征识别<br>Feature Recognition for Sheet Metal Model in STEP Format
%A 吴祥宇
%A 王雪飞
%A 华顺刚
%J Mechanical Engineering and Technology
%P 121-131
%@ 2167-6623
%D 2021
%I Hans Publishing
%R 10.12677/MET.2021.101014
%X 针对STEP格式钣金模型，研究了一种特征识别方法用于提取交换格式模型中的特征信息。首先，从钣金B-rep模型中提取面、环和边等拓扑信息进行分类和组合，创建与特征有关的榫接面集、腹板面集和弯边面集。然后结合环、边信息，根据几何形状识别钣金件的基础特征、修剪特征和变形特征，判断特征间的父子关系并提取特征参数。实验表明该方法可有效识别出标准交换格式钣金模型的特征。<br />
Aiming at the sheet metal models in STEP format, a feature recognition method is studied to extract the model’s feature information. First, the geometrical and topological information including the face, loop and edge are gained and classified. The joggle face-sets, web face-sets and flange face-sets are created after grouping faces. By combining these face-sets with loops and edges, the base feature, trim feature and deformation feature could be recognized. After that, the feature re-lationships are judged and parameters are extracted. Experiments proved that our method is ef-fective for recognizing the features of sheet metal models in standard exchange format.
%K STEP格式，钣金模型，特征识别，拓扑信息<br>STEP Format
%K Sheet Metal Model
%K Feature Recognition
%K Topological Information
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=40643