| 摘要: |
| 本文介绍了STEP标准的概念和原理，基于STEP标准对各种计算机辅助系统进行集成的策略，以及STEP模型描述语言EXPRESS的编译器的实现和GHModeIing4.O的STEP中性文件前后处理器的实现．文中详细地讨论了STEP标准的实现原理、EXPRESS编译器的作用、SDAI数据字典结构、STEP中性文件的前后处理过程和应用协议在产品效据交换中的作用． |
| 关键词: STEP,EXPRESS．SDAl，CAD/CAM/CAPP，数据交换，数据库． |
| DOI： |
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| RESEARCH ON THE PRODUCT DATA REPRESENTATION AND EXCHANGE USING STEP |
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Zhao Zhige,Zhao Rongliang
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| Abstract: |
| This paper introduces two solutions using STEP to integrate various CAD/CAPP/CAM application systems and presents the implementation methods of the EXPRESS compiler and the STEP exchange file pre/post processor as components of GHModeling4.O System．Some essential techniques and strategies such as SDAI data dic-tionary structure，schema manipulations，the STEP exchange file accessing and the appli-cation protocol conformance are discussed in detail． |
| Key words: STEP,EXPRESS,SDAI,CAD/CAM/CAPP,data exchange,database． |
