In addition, the following measures can be adopted in the structural design of the mold: <br>① For the root foot part of the punch of the bending mold, a convex structure can be designed. This part can make the force of the punch better concentrate on the bending part after the bending is finished, and tangential deformation will occur inside the extruded part to alleviate the problem of springback. <br>②For the concave part of the bending die, a soft rubber material or polyurethane material can be used instead of the original material. Thereby, the pressing depth of the punch is adjusted to ensure springback. In the bending machine mold, we can customize special molds.
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