Being an essential concept in CAD/CAM and even in Concurrent Engineering, feature isthe theoretical basis of related technology, but formal definition of rt is still wanted. After reviewingprevious works , this paper ...Being an essential concept in CAD/CAM and even in Concurrent Engineering, feature isthe theoretical basis of related technology, but formal definition of rt is still wanted. After reviewingprevious works , this paper defines form feature as″a triplet(G ,D ,S) relevant to whole artifact or apart of it , where G,D,S are knowledge of geometry, manufacturing domain (CIM domain) and aspecific stage of product life cycle (CIM stage) , respectively. These knowledge together with aggre-gating and creating rules can be used for design , recognition and classification″ . In this definition .non-geometric semantics of form features are emphasized, and featured primitives, as feature con-structs, are defined by augmented adjacency graph (AAG) and geometric constraints. Finaliy. alge-braic specification is utilized to represent form features and illustrative examples are given.展开更多
文摘Being an essential concept in CAD/CAM and even in Concurrent Engineering, feature isthe theoretical basis of related technology, but formal definition of rt is still wanted. After reviewingprevious works , this paper defines form feature as″a triplet(G ,D ,S) relevant to whole artifact or apart of it , where G,D,S are knowledge of geometry, manufacturing domain (CIM domain) and aspecific stage of product life cycle (CIM stage) , respectively. These knowledge together with aggre-gating and creating rules can be used for design , recognition and classification″ . In this definition .non-geometric semantics of form features are emphasized, and featured primitives, as feature con-structs, are defined by augmented adjacency graph (AAG) and geometric constraints. Finaliy. alge-braic specification is utilized to represent form features and illustrative examples are given.
