Why Do Metal Stamping Parts Flip And Twist

Why do metal stamping parts flip and twist?
In the progressive die, the shape of the stamping parts is formed by punching the excess material around the stamping parts. The main reason for the flipping and twisting of the stamping parts is the influence of the punching force. During punching, due to the existence of the punching gap, the material is stretched on one side of the die (the material warps upward) and compressed on the punch side. When using a stripper, the stripper is used to press the material to prevent the material on the die side from warping upward. At this time, the force condition of the material changes accordingly. As the stripper increases its pressing force, the material on the punch side is stretched (the compression force tends to decrease), while the material on the die surface is compressed (the tensile force tends to decrease).
The flipping of the stamping part is caused by the stretching of the material on the die surface. Therefore, during punching, pressing and clamping the material is the key to prevent the stamping parts from flipping and twisting. The causes and countermeasures of flipping and twisting of stamping parts during bending.
It is caused by the burrs of the stamping parts generated during punching. The punching edge needs to be repaired, and attention should be paid to checking whether the punching clearance is reasonable.
During punching, the punching parts have been turned over and twisted, resulting in poor forming after bending, which needs to be solved from the punching and unloading station.
This is caused by the instability of the stamping parts during bending. It is mainly for U-shaped and V-shaped bending. The key to solving this problem is to guide the stamping parts before bending, guide them during bending, and press the materials during bending to prevent the stamping parts from slipping during bending.