预应力板材冲压与传统的冲压技术相比,可认为是一种新颖的冲压工艺。其基本的不同点是从板材上分离冲件的原理。本文在实验研究基础上分析了这一原理,描述了所获得冲件的特性,探讨了模具及冲床的工艺参数和一般要求。所得到的结论是,采用此工艺无论批量的多少都将有利于制造业的经济。 Prestressed sheet metal stamping compared with the traditional stamping technology, can be considered as a novel stamping process. The basic difference is the principle of separating the blanks from the plate. This paper analyzes the principle on the basis of experimental research, describes the characteristics of the obtained punch, and discusses the process parameters and general requirements of die and punch. The conclusion to be drawn is that the adoption of this process will benefit the manufacturing economy regardless of batch size.