Common Problems With Punch and Die
Numerous factors contribute to the problems encountered when it comes to Punch and Dies. If you’re having problems with chipping, breaking or cracking punches, we’ll give you some tips or solutions that may apply to your problems. Also, you can contact our experts and we’d be happy to help.
Here are some factors that contribute to the least performance of your punch and die. To achieve the maximum performance of your punch and die, you should be able to recognize these problems.
- Misalignment If the punch is not aligned to the hole in the die and will result to non-uniformed clearance from the die. Solution is to check the punch and die if they are aligned.
- Loose coupling nut A loose coupling nut may allow the punch to shift during the process of punching that will lead to chipping or cracking
. - Stripping failure Stripping failure happens when the stripper has too much clearance and will cause the material to be punched to move. This can cause angular fracture to the punch. Solution is to adjust the stripper closer to the material to avoid unnecessary material movement.
- Chipping and Galling Face chipping and heavy galling on one area are problems we encounter when it comes to Punch and Dies. Poor alignment between the punch and die is causing the punch to drag. Possible solution is to adjusting the alignment between the punch and die; equal clearance all around.
- Comprehensive failure The punch and die also exceeds its capability to punch through materials and eventually shatters and get destroyed. The cause of this problem is the punch attempts to punch extremely hard materials and really thick materials. Also, misalignment also a factors when it comes to comprehensive failure. Solution is to find quality punch and die.
- Head Breaking The reason behind head breaking is usually the coupling nut is loose. Worn punch system or the coupling nut will cause the head to fracture. Solution is to re-tighten the coupling nut after several hits and periodical throughout the day. You should also check the face of the system that it is smooth and flat.
- “Ringing”Occurs usually with each stroke of the press deforming the material. “Ringing” the punch occurs when the material is thicker than the working length of the punch or the punch is entering the die too far. Again, the best solution for this type of problems is adjust the stroke to enter into the die a maximum of 1/16.
The best course of action when for us to not encounter these problems is proper maintenance. To learn the proper way to maintain Punch and Dies, please click here (Link to next article).
