What are the common problems of sheet metal stamping? What should we do?

1. Burrs on blanking parts

When we are doing sheet metal stamping, burrs may be generated because the gap between the blanking parts is too large or too small. It is also possible that the blade of the stamping die becomes blunt and the axis cannot overlap, which will also cause burrs on the stamping parts.

So how should we prevent it? When we are doing sheet metal stamping, we must determine the processing accuracy and assembly quality of the punch and die. It is also necessary to ensure the verticality of the entire punch and withstand the side pressure and have sufficient rigidity. At the same time, when installing the punch, it is necessary to ensure the correct gap between the punch and die and make them firmly installed on the die fixing plate. And ensure that the press has sufficient blanking force.

2. Warping of blanking parts

During processing, the blanking parts may generate torque because the action force and reaction force are not on a straight line, or the contact area between the sheet metal stamping parts and the machine is too small, which may cause warping and deformation.

Then we should pay attention to the reasonable size of the gap when punching. We should increase the contact pressure between the pressing plate and the pressing plate in the mold structure to prevent the material from curling due to improper operation. Leveling should be performed before punching. If the warping deformation cannot be eliminated, we can also level it again through the leveling die. Finally, we should also regularly clear the dirt in the mold to prevent the warping of the punched parts.

3. Cracks in the bent parts

Sometimes when processing sheet metal parts, the internal stress in the bending deformation zone exceeds the strength limit of the sheet metal stamping parts, and finally cracks are generated in the bent parts.

In order to prevent this phenomenon from occurring, we can take some measures to prevent it. For example, we can reduce the bending deformation of sheet metal stamping, put the burr side on the inside of the bending part to prevent cracks. When choosing bending parts, we should also pay attention to the bending radius. It should not be too small, the surface of the parts should be smooth, and some lubricants can be applied if necessary to reduce friction during the bending process.

When performing sheet metal stamping, we must pay attention to many details and be careful to avoid damage to stamping parts due to these problems, which will lead to a decrease in our production efficiency!