设计难点 Design difficulty editing 1、质料的合理利用 The rational use of the material 质料利用率：冲裁件的实际面积与所用板料面积的百分比，它是衡量合理利用质料的经济性指标。 Material utilization: the percentage of the actual area of the cutting part and the area of the plate used, it is the economic indicator that measures the reasonable use of the material. 1个步距内的质料利用率 The material utilization rate within one step distance 1张板料(或带料、条料)上总的质料利用率 The total material utilization rate of 1 sheet (material, strip) 板料的裁剪要领 The cutting of the plank is important 2、提高质料利用率的要领 Improving the efficiency of the material utilization 冲裁所孕育产生的废料：1类是布局废料；另1类是工艺废料。 The waste generated by the blanking process: 1 is the layout waste; The other one is craft waste. 工艺废料与布局废料 Craft waste and layout waste 布局废料是由制件本身的形状决定，1样平常是牢固稳定的；工艺废料取决于搭边与余量的大小，也取决于排样要领与冲压要领。因此，要提高质料的利用率，就要合理排样，淘汰工艺废料。 Layout waste is determined by the shape of the piece itself. Process wastes depend on the size of the side and the balance, and also depend on the top and pressing. Therefore, to improve the utilization rate of the material, we should arrange the samples rationally and eliminate the waste materials.