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Plate Punching Machine-How To Adjust Up Down Moulds Decentration?

Jinan Supertime Technology Co.,Ltd | Updated: Jul 31, 2017

Many CNC plate punching machine operators encounter this problem: Up and down moulds decentration. 


Follow these tips:

1. Check if the punching head deforms, because it suffers most weight. Put it on standard V-block, rotate punching head, beat with a dial indicator measuring the diameter of radial punch.

2. Assume other parts are OK, then loosen the lock nut, turn punch to a certain angle and lock it. If up and down moulds follow punch in an eccentric direction, then means punch deforms or bents.


3. Match of punch lock nut and punch head is important, if their conical surface don’t match, then punch is out of vertical.

4. After period of time machine running, decentration may happen, adjust bottom mould base.

5. Check if punch rod deforms.

6. Check if punch lock nut is loose.


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