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本文介绍了一套用于起重运输机械和工程机械类回转体零件工艺设计的计算机辅助工艺规程设计（ＣＡＰＰ）系统，叙述了基于型面要素的零件描述以及自动生成加工工序图的方法，解决了工序卡内容与工序简图由打印机并行输出的问题。
This paper introduces a set of computer aided process planning (CAPP) system for the process design of the slewing parts of hoisting and transport machinery and construction machinery, describes the description of the parts based on profile elements and the method of automatically generating the process map, Process card content and process diagram output by the printer in parallel issues.