Reasons and Solutions for Punch Breaking During Stamping of Stainless Steel Plates

In the stamping process of stainless steel plate, in addition to the stainless steel material itself prone to some problems, the punch as a processing tool is also prone to breakage. In addition to the punch material and the industrial design of the punch itself, there are other reasons for this. reason. Let's talk about the reasons why stainless steel stamping punches are easy to break and the corresponding solutions.

One is that the hardness of the punch is too high, and the wrong punch material is selected. The solution is to replace the punch material and adjust the heat treatment hardness accordingly. Secondly, the material positioning is not suitable, which causes the punching punch to cut unilaterally, which makes the force unevenly broken. The solution is to adjust the positioning or feeding device. The third is that the material of the punch does not meet the requirements, resulting in poor angle and size deviation, changing the material and readjusting the gap.
In addition, it is also possible that the fixed part of the punch is offset from the guide part, and the block is repaired or re-cut to make the punch go up and down smoothly. The fifth is the poor fixation of the punch, that is, the punch moves up and down. The solution is to re-fix the punch so that it cannot move up and down. The sixth is because the punch edge is not sharp enough, the solution is to regrind the edge.
The seventh is that the closing height is too low, and the punch cutting into the knife edge is too long. The solution is to adjust the closing height to make the punch edge length appropriate. The eighth is that the mold is not adjusted in place, resulting in angle error and size deviation. The solution is to adjust to the appropriate closing height or angle difference. The ninth is because the scrap of the lower die blocks the knife edge, causing the punch to break. The solution is to re-drill the large blanking hole to keep the blanking smooth. The tenth is to form the male without R angle. The solution is to maintain the formed male to repair the R angle in the angle and other normal conditions.
There are also some because the height of the folding knife is not enough, and the folding punch is too short to fit into the folding knife. The solution is to increase the height of the folding knife so that the bending punch can fit into the folding knife as much as possible. Or the bending speed is too fast, resulting in deformation of the bending root. The solution is to adjust the speed ratio control and select the appropriate speed. Finally, the structure is unreasonable. When the folding knife is not inserted into the fixed template for stamping, it is easy to cause the gap to become larger. The solution is to re-mill the groove and insert the folding knife into the template.