介绍了为重型机械专门开发的焊接零部件工艺规划CAPP系统。该CAPP系统通过对重型机械焊接零部件特征的归纳总结 ,确立了对板材、型材和部件三种类型焊接零部件备料工艺工序制定的具体方法。在此基础上 ,此系统同时完成了工序工时、结构件材料和焊接材料定额的计算和汇总 ,从而使工艺规划和生产准备工作更加科学 ,有效地提高了工作效率 ,缩短了生产周期 Introduced the CAPP system of welding parts technology planning specially developed for heavy machinery. The CAPP system through the summary of the characteristics of heavy machinery welding parts and components, established the plate, profiles and components of three types of welding parts preparation process for the preparation of specific methods. On this basis, the system simultaneously calculates and summarizes the working hours, structure materials and welding material quotas, so that the process planning and production preparation work more scientifically and effectively improves the work efficiency and shortens the production cycle