集成化CAD/CAM系统中的产品数据结构

Data Structure of Products for Integrated CAD/CAM Systems

在集成化CAD/CAM系统中,产品造型的关键问题是产品的信息结构与信息表示,因为它们在工程应用中起着越来越重要的作用。分析研究了产品信息的类型、作用与特点之后,本文提出了一些信息模型来表示各种产品,并讨论了产品信息的集成化管理与一致性问题。总之,本文描述的信息结构在工程设计中具有许多有效的优点与特点。

The key problems in product modelling for integrated CAD/CAM sy stems are the information structures and representations of products. They are pla ying a more and more important role in engineering applications. With the investiga tion on engineering product information and from the viewpoint of industrial proce ss, information model s are proposed and the definitions of the framework of product information are given in this paper. And then, the integration and the consistence of product information are discussed by introducing the entity and its instance. In sho rt, the information structures described in this paper have many advantages and nat ures helpful in engineering design.