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Pressure Adjustment and Vibration Reduction Methods of Four-Column Hydraulic Press

The four-column hydraulic press drives the operating mechanism by the motor through the transmission mechanism, applies pressure to the workpieces, and completes its processing process. The transmission mechanism is a reduction mechanism driven by a belt or gear. The transmission mechanism is a belt-drive or gear-drive decelerating mechanism; the operating mechanism is divided into a screw mechanism, a crank connecting rod mechanism, and a hydraulic cylinder. The transmission mechanism of a hydraulic press can not only complete various forms of complex motion and compound motion but also complete a large-scale continuous step-less speed regulation. Now let’s have a look at the issues that should be paid attention to when adjusting the pressure and reducing the vibration of the press.  

Pressure Adjustment Of four-Column Hydraulic Press

The pressure of debris cannot be higher than the pressure of the pump unless the hydraulic machine has a supercharging device. The actual pressure of the pump depends on the load size and is generated automatically rather than adjusted. The set pressure of a four-column hydraulic machine is the maximum pressure for normal operation. Lower the pressure of the overflow valve, adjust the overflow valve, and the pump outlet pressure will rise to the required value.

Vibration Reduction Methods Of Four-Column Hydraulic Press

After the four-column hydraulic press is used for a period of time, every time it starts or stops, there will be a vibration of the machine with noise. This is not good for the hydraulic press in the long run; it also affects the production efficiency and causes concern for the operator. Therefore, we

have to think of some methods to reduce the vibration.   

The vibration caused by the alternating internal and external cycles of the hydraulic press process system, also known as forced vibration, is mainly caused by external interference. The vibration source must be eliminated first. Prevent the exciting force frequency of the four-column hydraulic press from approaching the natural frequency of the system to avoid resonance. the motor speed is changed or the spindle speed is changed to avoid resonance. Adopt the forward contact surface accuracy, reduce the roughness of the joint surface, and eliminate the gap and the forward contact stiffness, which can eliminate vibration.

The Vibration Isolation Method Can Be Adopted To Reduce The Vibration Of The Four-Column Hydraulic Press

The motor and the bed can use flexible connections to isolate the vibration of the motor itself. the hydraulic buffer device can be used to reduce the shock when the components are reversed. thick rubber and wood can be used to isolate the machine from the foundation; consider using anti-vibration ditch separation equipment connected to the ground to prevent the surrounding vibration source from being transmitted to the hydraulic press through the ground.

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