【摘要】 在分析现有CAD软件以及产品建模方法不足的基础上 ,引入广义工程语义特征的概念 ,应用广义特征对象实现面向并行设计的产品广义信息模型的简化表示 ;提出一种自动特征识别方法 ,对识别对象进行分类 ;以截面复杂的回转体特征为例 ,着重表述了基于基面的特征识别算法 ;扼要介绍Pro/E软件中的特征结构树 ,提出面向Pro/E的特征信息三级提取策略与特征信息模型重构原则 ,并据此开发了DFX原型系统更多还原

【Abstract】 For realizing feature based integration of CAD/CAPP/CAM processes, an approach to recognize and extract design features is presented to facilitate the Design For X(DFX) evaluation and optimization in concurrent product development The concept of generalized engineering semantic feature (GESF) is introduced to represent the generalized product information model in a simplified way Feature recognition is fulfiled using case by case classification For instance, rotational features are classified by the shape of generatrix Based on the structure of feature tree in Pro/E software, a three step strategy is worked out to extract the feature information of part, and rules to reconstruct it into feature information model are elaborated In such a way, the Design For X prototype system is undergoing development更多还原