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在近代工业中钣料压制获得了广泛的应用。在机器制造反仪表制造中大量地采用了冲裁另件作为成品或半成品。实践证明,冲裁件的质量还远不能满足技术发展的要求,特别是在精密仪表制造中,常对冲裁表面光洁度及精度有更高的要求,整修是提高平钣另件,特别是复杂形状冲裁件质量的先进方法之一。到目前为止,对整修,特别是对钢制另件的整修还研究得很少,即便如此,在仅有的一些文献中,对许多重要问题也存在有不同意见,例如:整修余量的大小,整修力的计算等。基于上述原因,本文仅对影响整修件质量的某些基本因素进行研究,亦就是:整修余量、整修件材料厚度、整修凹模工作部分结构形成对整修表面光洁度、精度、平面度及金相组织的影响。与此相关地也必须同时解决:整修时的应力状态,应变过程及整修力。为了验证理论分析及阐明影响整修件质量及整修力的因素,曾进行了一系列的试验研究。
In modern industry, sheet metal pressing has been widely used. Large quantities of blanked pieces are used as finished or semi-finished products in the manufacture of machine-built counters. Practice has proved that the quality of blanking pieces far can not meet the requirements of technological development, especially in the manufacture of precision instruments, often on the blanking surface finish and precision have higher requirements, renovation is to improve the sheet metal parts, especially the complex shape One of the advanced methods of blanking parts quality. So far, there have been very few studies on renovations, especially for renovations of steel parts. Even so, there are only a few references to many important issues, such as the size of renovations , Renovation of the calculation of power. Based on the above reasons, this article only studies some basic factors that affect the quality of the refurbished parts, that is, the refurbishment allowance, the material thickness of the refurbished parts, the formation of the working part structure of the refurbished die cavity are very important for the improvement of surface finish, precision, flatness and metallography The impact of the organization. Related to this must also be resolved at the same time: renovation of the stress state, the process of straightening and renovation. In order to verify the theoretical analysis and clarify the factors affecting the quality of renovation parts and renovation, a series of experimental studies have been conducted.