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在工业生产中常使用非矩形断面毛坯料压制冷冲压零件。 通常,在设计和制造冲裁模时常忽视零件材料厚度为变断面的情形,决定冲裁间隙时按平均间隙考虑。在冲裁间隙小和大的地方,材料有承受挤压的情形,那里不是纯切割,毛刺明显增大。 实践证明,冲裁质量、冲裁力和生产效率在很大程度上取决于正确地确定凸模及凹模工作刃口的间隙。
In industrial production is often non-rectangular cross-section of the blank material to suppress cold stamping parts. Usually, in the design and manufacture of blanking die, the thickness of the part is often overlooked when the thickness of the variable cross-section of the situation, decided to punching the gap by the average gap to consider. Small and large gaps in the blanking area, the material under pressure to withstand the situation, there is not pure cutting, burr significantly increased. Practice has proved that the punching quality, punching force and production efficiency depends largely on the correct determination of the punch and die edge of the gap.