摘要
制造特征的识别是实现CAD/CAPP/CAM集成的关键技术 ,既要将特征交互的区域合理分解 ,又要避免在识别过程中把单个特征不恰当地分解为两个或多个特征。本文使用辅助面、延伸面相结合的方法 ,对零件的属性邻接图表示进行扩展 ,同时引入了联合加工特征的概念及识别方法 ,使扩展后得到的图被分解后能够真实地表示零件的制造特征 ,从而使加工方法的推理更确切、更快捷。
The recognition of machining features is the key technology in the integration of CAD/CAPP/CAM. How to decompose the interacted zone into different features is the core issue of the recognition of machining features. This paper extends the attributed adjacency graph(AAG) of the part with the connection of assistant face and extended face. We can get the exact type of the feature by matching the sub-graph divided from the NAAG. We also introduced united machining feature (UMF) to make the reasoning more reasonable.
关键词
制造特征
特征识别
属性邻接图
工艺设计
CAPP
CAD
CAM
machining feature
feature recognition
feature interaction
graph matching
united machining feature
