How to maintain the mold of the CNC punching machine

1. Numerical control punch moulds should be cleaned and lubricated regularly.
 
2. Different die gaps should be selected for different plate thicknesses and different materials. If the gap is too small, it is easy to gnaw the die, and if the gap is too large, the burr will be large.
 
3. Different material molds should be used for different material plates, such as stainless steel and aluminum copper plates, and special steel should be used.
 
4. Regularly check the coaxiality of the mold base under the CNC punching machine, the mold position is not correct, it is easy to unilaterally gnaw the mold or break the mold.
 
5. The molding die should be fine-tuned from the lowest point to the appropriate position gradually upward, otherwise, it will easily cause the die to break up at one time.
 
6. When it is found that the cutting edge of the upper and lower die wears up to the arc of R0.25 mm, it needs to be sharpened again.
 
7. The amount of sharpening (cutting amount) each time should not exceed 0.013 mm. Excessive amount of grinding will cause the mold surface to overheat, which is equivalent to annealing treatment. The mold becomes soft, which greatly reduces the life of the mold. It must be increased enough when sharpening. Of coolant.
 
8. After sharpening, the edges should be treated with whetstone to remove excessively sharp ridgelines, demagnetized and oiled. When the mold entry depth is not enough, adjust the height of the striking head to the required size.
 
9. The amount of sharpening of the mold is fixed. If it reaches this value, the punch will be scrapped. If you continue to use it, it is easy to cause damage to the mold and the machine, and the gain is not worth the loss. When replacing molds and blade molds, pay attention to safety before and after starting the equipment to prevent damage to equipment, molds, and personnel.