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在冲裁工序中,常采用倒装复合模,由于产品设计上的需要,往往由于孔至边缘的距离较小而出现凸凹模壁厚很薄的情况。该
In the blanking process, often using flip-composite die, due to product design needs, often due to the hole to the edge of the smaller and appear punch and die wall thickness is very thin. This