STEP专用处理器的设计

介绍ＳＴＥＰ专用处理器的用户字典文件、内存工作格式和ＡＰＩ设计方法，讨论内存工作格式的系统结构，相关信息的组织方法，允许用户查询，修改并得构ＳＴＥＰ文件，并对用户的操作进行语法检查、语法检查；通过调用基本功能函数，用户针对自己的应用编写ＡＰＩ，通过ＡＰＩ提取ＣＡＰＰ、ＣＡＭ所需要的信息，实现系统之间的信息交换与共享。以机械产品设计为目标，遵照ＡＰ２０３、ＡＰ２１４，建立了ＪＷ－ＣＡＤ中的应用协议Ｊ

The Design of STEP Special Processor Meng

This paper introduces the user dictionaryfile of a special STEP processor. working form and APIdesign method in detail. The user dictionary file is generated through interactive mode. and then rcad into systemmemory. This paper also discusses the system structureof working form and the organization of related informa-.non. Working form provides not only a simple and effective structure for system to carry on syntax checking andmorphology analyzing, but also an mechanism for user tosearch, modify and regenerate STEP neutral file. Userscan codify API by calling basic functions with respect totheir own need. and extract information to meet the quircments of CAPP, CAM and PDM through API,therefore the exchange and share of information amongsystems arc realized. In the end. according to AP203.AP214 and the specific requirement of CAPP and CAM,this implementation mming at mechanical product designcreates JW-AP in JW-CAD. JW-CAD runs on this processor. realizes CAD/CAPP/CAM integration and obtains good results.