三维CAD环境下的产品数据管理方法.pdf

第 18 卷 第 3 期 计算机辅助设计与图形学学报 Vol 18 , No3 2006 年 3 月 JOURNAL OF COMPU TERAIDED DESIGN COMPU TER GRAPHICS Mar , 2006 　 产品开发策略 三维 CAD 环境下的产品数据管理方法 1) 1) 2) 李海峰 　吴慧中 　陈卫东 1) (南京理工大学计算机科学与技术系　南京　210094) 2) (北京 CAXA 科技有限公司　北京　100083) (lhf @caxacom) 摘 要 　分析三维 CAD 中基本数据类型 ,并抽取面向管理的结构化信息 ;定义了数据间的关系类型及数据生命周期 状态 ;给出数据约束和关联定义 结合 CAD 数据的生命周期管理 ,提出关联数据在进行出库、入库、发布等方面的操 作时 ,相关数据进行自动更新的规则 针对 CAXA 实体设计系统给出管理数据模型 ,并在 SMARTEAM 平台上实现 关键词 　三维计算机辅助设计 ;产品数据管理 ;数据关联 ;信息集成 中图法分类号　TP39172 An Associative Approach to 3D CAD Product Data Management Li Haifeng1) 　Wu Huizhong1) 　Chen Weidong2) ) 1 ( Depart ment of Computer Science and Technology , N anji n g U niversity of Science and Technology , N anji n g 　210094) ) 2 ( ) CA XA Technology CoL t d , Beiji n g 　100083 Abstract 　　Through analyzing the fundamental data types in 3D CAD , the structured management infor mation is extracted and the constraining relationship and associativity among these data types are defined In view of the data lifecycle management ( Check in , Check out , release , etc) , operation rules are designed for the automated update of associative parts data This helps to preserve the original design intent or speci fications during engineering changes At the same time , associative management provides instructions for process and knowledge management A special data model is defined for CAXASOL ID , and the system inte gration is accomplished on SMARTEAM Association between 3D model and 2D drawing is maintained in PDM , and synchronized check in and check out keep the consistency of 3D and 2D