一、编制标准的目的和意义 WJ/Z 255-90《冲压零件分类编码系统CYBM》是在总结经验教训的基础上,针对冲压零件和模具生产中存在的以下问题而编制的。 (1)产品设计继承性差,设计周期长; (2)工艺技术准备工作量大,内容重复多,企业投入的工程技术人员比例较大; (3)工装制造周期长,尤其是模具的制造周期更长,标准化程度低,只能采用单件生产的方法; (4)企业应变能力差,新产品上马投资 First, the purpose and significance of the preparation standards WJ / Z 255-90 “stamping parts classification coding system CYBM” is based on the lessons learned, based on the stamping parts and die production in the following questions and prepared. (1) product design inheritance is poor, the design cycle is long; (2) process technology preparation workload, content duplication, enterprises engaged in a large proportion of engineering and technical personnel; (3) Tooling manufacturing cycle is long, especially the mold manufacturing cycle Longer, less standardized, can only use a single method of production; (4) enterprise adaptability is poor, new products launched investment