关键词: 三维模型, 零件库, 工程重用, 冲压件, 零件表示, 模型检索, 产品设计

Abstract: In order to deal with problems as 3D part model and its relevant resource reuse, the architecture and its key technology of 3D parts library oriented to engineering reuse were studied. The architecture consisted of parts representation and repository, models organization, user interface and service. Metadata, feature vectors, parametric feature relation graph and engineering semantics were used to represent model contents. The clustering method which combined the self-organizing feature and K-means based on feature vectors was applied in order to improve part model matching and retrieval efficiency. And based on these, the two-stage similarity assessment algorithm which integrated feature vectors and parametric feature relationship graphs was put forward. Finally, an application example of stamping parts library service system was provided.

Key words: 3D models, parts library, engineering reuse, stamping parts, parts representation, model retrieval