Analysis and Improvement of Radial Force Unbalance of Blanking Die

As shown in Fig. 1, the sheet with a thickness of 3mm needs to be cut by a pair of punches with a corner of 50mm×40mm. The general design of the mold is shown in Fig. 2. When the punching and lowering die is unbalanced due to the radial force, the “knives” "The phenomenon of shifting the lower mold not only seriously affects the life of the mold (the cutting edge becomes dull), but also increases the burr of the broken surface of the blanking part, which is serious.

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