In the process of workpiece processing, once it is found that there is air mixed in the CNC punching oil, or the air in the hydraulic cylinder is not exhausted before starting, it is easy to cause great noise pollution noise in the process of high-pressure operation. For operators, what we need to do is to take effective measures to solve such noise. < br style = "list style type: none;" / > however, only when the root cause of the problem is found can the remedy be applied to the case. What kind of circumstances can lead to the noise when the punching machine is running? < br style = "list style type: none;" / > 1. < br style = "list style type: none;" / > 2. Excessive bending of the hydraulic pipeline will cause the clip on the component to fall off, which will continuously vibrate during operation and cause harsh noise. Therefore, the bending should be reduced when the pipeline is deployed, and the clip must be tightened. < br style = "list style type: none;" / > 3. Noise of plunger pump and motor. < br style = "list style type: none;" / > 4. After sucking the air, the hydraulic pump will generate noise, which is also one of the key reasons. The external components of the hydraulic pump are excessively worn. The valve plate is worn due to its appearance. < br style = "list style type: none;" / > in addition, if the oil seal of the cylinder head is too tight, it will also be affected when the machine is running, thus causing noise phenomenon. What the operator must do at this time is to replace the oil seal of the CNC hydraulic punching machine.