【摘要】 网络化是制造技术的发展趋势,集成企业现有的CAD?CAM系统需要进行异构数据之间的共享与交换。分析了网络化CAD?CAM系统结构的设计要求,提出了其框架模型,详细描述了产品数据解析与转换模块的功能,给出了几何信息和非几何信息的提取方法,并以基于特征的面向对象的零件信息模型定义了统一的产品零件信息描述方式,为不同CAD?CAM系统间彼此交换产品数据提供了基础。更多还原

【Abstract】 The network is the development trend of manufacturing technology.To integrate the existing CAD?CAM systems of the enterprises,the share and exchange of isometric data are needed.In this paper,the requirements for design of CAD?CAM network system are analyzed,the frame model put forward,the functions of product data analysis and modular transition described in detail and the extracting method of geometric and nongeometric information given.Based on the feature-based object-oriented part information model,a uniform method of description of part information is defined,thus providing a ground for exchange of product data between the different CAD?CAM systems.更多还原