1, the problems of the mold repairing machine itself, the precision and stability of the mold repairing machine have a great influence on the quality of mold repairing, and the problems of the mold repairing machine itself, such as the low precision of the machine tool and the wear of the guide rail, will lead to the out-of-round mold.

2, tool wear, if the tool used in the die repair machine is seriously worn, it will lead to the mold is not round, so check and replace the tool regularly.

3. Improper setting of processing parameters, such as cutting speed and feed speed. , it will lead to the mold repair is not round.