One: there is a little less nitrogen in the nitrogen reflux cylinder. We need to add some nitrogen to see if the presser foot can press the plate firmly. If we want to go up and pull the board, there will be less nitrogen (which is very likely).
Two: the blade is blunt, so it needs polishing, but if it can be cut before, it will not be too big, because the blunt blade will increase the cutting force, and the machine tool will keep pressing until the cutting is finished, so it is easy to judge whether the blade is blunt or not. Just touch the blade gently with your hand.
Three: the possibility of oil circuit problems is less. This kind of oil circuit is a circulating closed oil circuit. Without oil leakage, the shear force cannot be reduced. If the oil pump is damaged, check the oil return port for oil leakage by hand. The oil pump may be broken. In addition, the oil pump is broken and the shear is very small. There is still a lot of noise when something happens, so it is easy to judge.
Four: Whether the oil cylinder leaks oil depends on the outside of the two cylinders. I haven't heard of the saying that there is oil leakage in the cylinder! ! !
If you have any questions, you can call me. The mobile phone number is the last digit except the account number.