在冲裁工作中,凸、凹模间隙选择的合理与否直接影响着冲裁件的断面质量。当凸、凹模间隙选择合理时、板料上、下面出现的裂纹相互重合。此时冲裁件断面处平整光洁,略带斜度,无毛刺产生(见图1a)。如 In the blanking work, convex, die gap choice of a reasonable or not directly affect the quality of the blanking section. When the convex, die gap choice is reasonable, the plate material, the cracks appear below coincide. At this point blanking section smooth and flat section, a slight slope, no burr (see Figure 1a). Such as