摘要： 本文分析了目前CAD和CAM难以集成的原因,强调了建立完整产品模型在CAD/CAM集成中的核心作用。同时综合分析了国外在产品模型建模方面的一些有代表性的理论、方法及取得的进展。阐述了国外在产品模型建模方面的最新动向——产品数据交换技术和特征建模技术。最后提出了我们的对策——开展特征建模技术和CAD/CAM一体化工程数据库的研究。

Abstract: This paper formulates reasons for difficulties in integrating current CAD and CAM systems, emphasizing the key role of a complete product model played in CAD/CAM integration. Some influential theories and methods proposed and achievements made abroad are analysed and evaluated comprehensively Current trends of product modeling techniques-product data exchange and feature modeling are elaborated. Finally, strategy to study feature modeling techniques and CAD/CAM engineering DBMS is presented.