为了争取不断減低工业产品的成本,提高产品的质量,以及节约贵重金属材料,我们在成批生产和大量生产的冲床工作中,可以从多方面来开动脑筋。像下图的工件,形状较曲折,它的冲模排列办法可分成四大类,各种办法的目的都是要求材料利用系数越大越好。请看第一类四方形的(图1甲、乙);第二类Г形及V形的(图2甲、乙、丙和图3);第三类Z形的(图 In order to continuously reduce the cost of industrial products, improve the quality of products, and save precious metals, we can start thinking in many aspects in the mass-production and mass-production presses. Like the figure below the workpiece, the shape of more twists and turns, its die arrangement can be divided into four categories, the purpose of various approaches are required material utilization coefficient as possible. See the first type of quadrilateral (Figure 1, A, B); the second type of Г and V (Figure 2 A, B, C and Figure 3); the third type of Z