落料凸模内装有导正销，保证了工件上孔和外形的相对位置准确，提高了加工精度。
Blanking punch contents is a derivative sales, and guarantee the workpiece and the shape of the holes in the relative position accurately, improve processing accuracy.
落料凸模内装有导正销，保证了工件上孔和外形的相对位置准确，提高了加工精度。
Blanking punch contents is a derivative sales, and guarantee the workpiece and the shape of the holes in the relative position accurately, improve processing accuracy.
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