面向产品设计的数字化零件库多表达机制的研究

Research on multi-expression mechanism of digitized parts library orientated to the design of product

构建一个能支持产品多种表达方式并可在不同环境中应用的产品信息模型 ,是将工程设计系统中的“自动化孤岛”集成起来的关键问题之一。通过对产品构成特征的分析并应用面向对象技术 ,提出一种将工程设计过程中的零件库信息抽象为类层、实例层和具体实例层的三层结构模式 ,将产品定义与产品的表达方式区别开 ,形成工程设计中数字化零件库系统的多表达机制 ,以构建适应多专家协同工作所需要的面向不同视点的对象模型。

Constructing an information model of product, which could support multi-expression mode of product and could be implemented in different environments, is one of the key problems for integrating the 'isolated islands of automation' in the system of engineering design. Through the analysis on constitution features of product and by applying the object-oriented technique, a kind of three layered construction pattern, which let the parts library information in the process of engineering design be abstracted as category layer, living example layer and concrete example layer, was put forward. It makes a distinction between the definition of product and the expression pattern of product, thus formed a multi-expression mechanism of digitized parts library system in engineering design in order to construct the object model facing different view points and suit the needs of multi-experts cooperation.