Design of U-Shaped Bending Stamping Die for Chain Plate

Firstly, the stamping process of U-shaped bending of chain plate was analyzed, and the bending force needed for U-shaped bending was calculated, and the punch of appropriate tonnage was determined. Then, according to the chain plate u-shaped bending stamping molding process and its dimension accuracy requirement, the U-bending stamping die was designed, which is mainly composed of concave-convex die, positioning column, discharge device, fixed plate of concave-convex die, floating block and its reset device and so on. In order to reduce the rebound of sheet metal, the unilateral clearance of concave-convex die, the radius of round corner of concave die and the rebound angle of punch were designed properly. Finally, the mold prototype u-bend stamping test was carried out, and the results show that the designed U-shaped stamping die could meet the requirements of the chain plate U-shaped bending stamping process, and the workpiece size could meet the requirements of precision.