提出了一种新的工艺方法，用于设计产品形状为矩形杆的多阶段拉深工艺的最佳中间模几何形状。使用所提出的技术开发了一个程序。在中间模几何设计中，以初始圆坯作为虚拟拉深模的入口，以最终产品作为出口，构造虚拟拉深模，然后将虚拟拉深模划分为孔型数。将不规则形状的分割中间模几何图形转换为矩形形状，以制造拉伸模。为了验证所提出的技术在实际工业产品中的应用，将其应用于由两个阶段组成的常规拉伸过程，并由三个阶段进行模拟- 三维刚塑性有限元法。并与实验结果进行了比较。

A new technique is proposed to design the optimal intermediate die geometry of a multi-stage drawing process in which the shape of the product is a rectangular rod. A program is developed using the proposed technique. In the design of the intermediate die geometry, the virtual drawing die is constructed using the initial round billet as an entrance of the virtual drawing die and the final product as an exit, then the virtual drawing die is divided into pass numbers. Divided intermediate die geometry with an irregular shape is transformed into a rectangular shape for manufacturing of the drawing die. To verify the application of the proposed technique to real industrial products, it was applied to a conventional drawing process composed of two stages and simulated by the three-dimensional rigid plastic finite element method. The proposed technique is compared with experiments.