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在冲压加工中,冲件料厚大于冲孔直径1.5倍时,即为深孔加工。由于凸模的应力是随料厚与孔径比值增大而增大的,比值越大,凸模越易断裂。
In the stamping process, the punch material thickness greater than 1.5 times the punching diameter, which is deep-hole processing. As the punch is the stress with the material thickness and the aperture ratio increases the increase, the greater the ratio, the more likely to break the punch.