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A NOVEL DEFINITION OF FORM FEATURE
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作者 Gao Fei Ye Shanghui 《Computer Aided Drafting,Design and Manufacturing》 1994年第1期28-36,共1页
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
关键词 FEATURE form feature featured primitive algebraic specification
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