STEP专用处理器的设计  

The Design of STEP Special Processor Meng

作　　者：孟明辰[1] 宋霜[2] 李志超[2] 李振宏[2] 李兵[2] 

机构地区：[1]清华大学精密仪器与机械学系,北京市100084 [2]清华大学,北京市100084

出　　处：《中国机械工程》1998年第6期35-37,共3页China Mechanical Engineering

基　　金：国家863高技术计划!863-511-01-B301

摘　　要：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、修改并重构STEP文件，并对用户的操作进行语法检查、词法检查；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JW－AP，并在该处理器上运行，实现了CAD／CAPP／CAM集成，收到了良好效果。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.

关 键 词：STEP 集成工具 CAD CAPP CAM集成 数据交换 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]