冲裁模刃口尺寸确定的研究探讨

Research and discussion on dimensions determination for blanking die cutting edge

分析了冲裁模刃口尺寸传统计算方法的不足,针对现代模具材料和加工制造的特点,提出了用冲裁模刃口的磨损规律统一基准模计算公式,黄金分割比例系数统一磨损系数,采用最终加工设备的经济精度统一确定刃口尺寸制造公差的新方法,并提出了用经济精度定量判别采用分别加工法或配作法的判别方法。新方法简化了冲裁模刃口尺寸的计算过程,模具刃口尺寸的制造公差更符合工厂实际情况,并能使冲裁件的尺寸能符合在尺寸中间值附近的预期。

With analysis on defects of traditional calculation method for the blanking die cutting edge dimensions,in the light of characteristics of modern die material and manufacturing,a new method using blanking die cutting edge wear law to get a unified calculation formula for the reference die,using the golden ratio to get a unified wear coefficient and using the ultimate manufacturing equipment economic tolerance to get a unified cutting edge manufacturing tolerance was put forward.Also,discriminant method,using economic tolerance quantify choose manufacturing method,machining matched or respectively,was proposed.The new method simplifies the blanking die cutting edge dimensions calculation process,makes the die cutting edge tolerance more in line with the factory actual situation and gets the blanking products size near the median of expected value.