基于特征和面向对象的焊接结构产品信息模型研究

Feature-based and Object-oriented Product Information Model for Welding Structure

焊接结构产品信息模型对于实现焊接结构CAD/CAPP/CAM集成具有重要的意义。现有的CAD系统不能为后续的生产制造活动提供完整的信息,不能满足CAD/CAM集成的要求。本文采用特征技术和面向对象的方法建立了焊接结构的产品信息模型,它能够有效地支持计算机辅助工艺规程设计、装夹和装配设计、机器人路径规划等后续的生产制造活动。提出了焊接结构的特征分类和特征表示方法,阐述了焊接结构产品信息模型的组织结构,开发了焊接结构信息模型原型软件WSPIMS,并对系统的结构和功能进行了说明。

Product information model for welding structure plays an important role for the integration of welding CAD/CAPP/CAM. However, existing CAD modeling systems are not capable of providing enough information for subsequent manufacturing activities such as CAPP and CAM. A new design approach using feature technique and object-oriented programming method is put forward in this paper in order to create the product information model of welding structure. With this approach, the product information model is able to effectively support computer aided welding process planning, fixturing, assembling, path planning of welding robot and other manufacturing activities. The feature classification and representing scheme of welding structure are discussed. A prototype system is developed based on feature and object-oriented programming. Its structure and functions are given in detail.