How to reduce the concave convex problem of stamping parts

Stamping parts are thin, uniform, light and strong. Stamping can improve the rigidity of workpieces with stiffeners, ribs, undulations or flanging which are difficult to manufacture by other methods. So how to reduce the concave convex problem of stamping parts? The methods to reduce the concave convex problem of stamping parts are as follows:
1. Regular inspection and correction of drawing die: the drawing die needs regular inspection and maintenance to reduce the formation of convex and concave and maintain stable state. The usual practice is to check the bonding scratch of blank holder ring and the condition of processing surface with samples.
2. Regular inspection and correction of the shearing die: the basic reason for the convex and concave after the shearing process is that the iron powder is formed in the shearing process, so the iron powder must be inspected before stamping to avoid the occurrence of convex and concave.
3. Appropriate manipulator speed: for semi-automatic drawing die production and processing, when the drawing punch is in the lower die position and the manipulator speed is very fast, the burr will fall on the upper part of the punch, resulting in convex concave. In order to avoid this kind of problem, we can do the discharging test of the workpiece before the production and processing, and set the speed and discharge angle of the manipulator reasonably, so that it will not touch the part and the die.
4. Check the cross section: when cutting the coil, the damage and damage of the cutting die will form a lot of tiny iron powder attached to the cutting edge, so the double cross section must be checked in the material area or the stamping line before stamping production and processing, and the sheet metal should be cleaned timely to remove the burr.
5. Inspection of sheet metal cleaning device: before stamping production and processing, it is necessary to regularly check, repair, clean and settle in order to clean the sheet metal more effectively. This is also necessary, and pay attention to the roller clearance and the quality of cleaning oil.