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本刊1981年第一期发表了第二汽车制造厂夏孝元同志关于“冲裁模凸、凹模刃口尺寸的标注与冲裁件的自由公差”一文以来,广大从事模具技术工作的同志展开了热烈的讨论,并陆续寄来了论述文章。由于模具涉及的面广,各行各业加工的产品对象、要求,模具设计、制造与使用的条件、经验等都不同,冲裁模凸、凹模刃口尺寸的标注也存在着差异。但通过这次讨论,可以总结各方面的经验供同志们参考,以促进冲裁模设计,同时,为制订冲裁模凸、凹模刃口尺寸标注方法和标准提供了依据。由于篇幅有限,只能选登一部分文章。在此,对积极参加这次讨论的同志表示感谢。
The first issue of 1981 published the second automobile factory Xiaoyuan comrades on the “die punch, die edge dimension markings and blanking pieces of free tolerance,” a text, the majority engaged in mold work comrades launched Warm discussion, and one after another sent the article. Due to the wide range of mold involved, the processing of various industries, the object of the product, requirements, mold design, manufacture and use of the conditions, experience and so on are different, blanking die convex, concave die edge dimensioning there are differences. However, through this discussion, we can summarize all aspects of experience for the comrades to refer to in order to promote the design of blanking dies, and at the same time, provide the basis for formulating blanking die and die edge dimensioning methods and standards. Due to limited space, only selected part of the article. Here, I am grateful to the comrades who participated actively in this discussion.