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基于设计特征模型的加工特征映射技术 被引量:6
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作者 于芳芳 郑国磊 +1 位作者 任文杰 杜宝瑞 《北京航空航天大学学报》 EI CAS CSCD 北大核心 2007年第7期842-845,共4页
为了实现数控编程过程中能够自动确定加工区域,对基于特征设计系统构建产品模型的方法、产品信息模型、信息模型间的关联关系、飞机结构件加工特征定义分类、设计特征与加工特征间的内在关系进行了深入的研究,提出了基于设计特征模型映... 为了实现数控编程过程中能够自动确定加工区域,对基于特征设计系统构建产品模型的方法、产品信息模型、信息模型间的关联关系、飞机结构件加工特征定义分类、设计特征与加工特征间的内在关系进行了深入的研究,提出了基于设计特征模型映射加工特征的方法.该方法通过遍历特征设计树,判断特征间的关系,查询特征组成面信息,从而构建出特征属性邻接图,进而采用基于图匹配的特征识别方法得到加工特征,并提取加工特征信息.该方法压缩了图匹配空间,大大提高了特征识别的速度,应用此方法实现了飞机壁板类零件的特征识别. 展开更多
关键词 基于特征设计 加工特征映射 设计特征 加工特征
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A FORMAL REPRESENTATION FOR FEATURE-BASED DESIGN 被引量:1
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作者 孙正兴 丁秋林 张福炎 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1997年第1期37-46,共10页
Feature based design has been regarded as a promising approach for CAD/CAM integration.This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal re... Feature based design has been regarded as a promising approach for CAD/CAM integration.This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal representation,design process model and design algorithm.The implementing scheme and formal description of feature taxonomy,feature operator,feature model validation and feature transformation are given in the paper.The feature based design process model suited for either sequencial or concurrent engineering is proposed and its application to product structural design and process plan design is presented. Some general design algorithms for developing feature based design system are also addressed.The proposed scheme provides a formal methodology elementary for feature based design system development and operation in a structural way. 展开更多
关键词 CAD CAM product modelling design process feature based design representation formalism
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