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Working Principle and Application of Servo Hydraulic Press

Published on:

2023-05-12 15:37

1. Energy saving:

Compared with ordinary hydraulic presses, the overall control of the system does not contain proportional servo valves or proportional pump links, and the service drive hydraulic press has the advantages of energy saving, low noise, small temperature rise, good flexibility, high efficiency, convenient maintenance, etc., which can replace most of the existing ordinary hydraulic presses and has a wide range of market prospects. According to the different processing technology and production beat, the servo driven hydraulic press can save 30%~70% compared with the traditional hydraulic press.

2. Low noise:

Servo-driven hydraulic oil pump generally adopts internal gear pump or high-performance vane pump, traditional hydraulic press generally adopts axial piston pump, under the same flow and pressure, the noise of internal gear pump or vane pump is 5dB~10dB lower than that of axial piston pump. The servo-driven hydraulic press runs at the rated speed when the motor is pressed and returned, and its emission noise is 5dB~10dB lower than that of the traditional hydraulic press. When the slide is falling and the slide is stationary, the servo motor speed is 0, so the servo drive hydraulic press basically has no noise emissions. In the holding stage due to the low motor speed, the noise of servo-driven hydraulic press is generally less than 70dB, while the noise of traditional hydraulic press is 83dB~90dB. After testing and calculation, under normal working conditions, the noise generated by 10 servo hydraulic presses is lower than that generated by an ordinary hydraulic press of the same specification.

3. Less heat generation, reduce costs:

Since the servo-driven hydraulic press hydraulic system has no overflow heating, and there is no flow flow when the slide is stationary, there is no hydraulic resistance heating, and the heat of the hydraulic system is generally 10%~30% of the traditional hydraulic press. Due to the low calorific value of the system, most servo-driven hydraulic presses can be set without a hydraulic oil cooling system, and some of the larger calorific values can be set up with a low-power cooling system. Due to the characteristics of zero speed and small heating of the pump most of the time, the oil tank of the servo control hydraulic press can be smaller than the traditional hydraulic engine oil tank, and the oil change time can also be extended, so the hydraulic oil consumed by the servo driven hydraulic press is generally only about 50% of the traditional hydraulic press.

4. High degree of automation, good flexibility and high precision:

The pressure, speed and position of the servo-driven hydraulic press are fully closed-loop digital control, with high degree of automation and good precision. In addition, its pressure and speed programmable control can meet various process needs, and can also realize remote automatic control.

5. High efficiency:

Through appropriate acceleration and deceleration control and energy optimization, the speed of servo-controlled hydraulic press can be greatly improved, and the working cycle is several times higher than that of traditional hydraulic press, which can reach 10/min~15/min.

6. Easy maintenance:

Due to the elimination of proportional servo hydraulic valves, speed regulating circuits and pressure regulating circuits in the hydraulic system, the hydraulic system is greatly simplified. The cleanliness requirements for hydraulic oil are much smaller than those of hydraulic proportional servo systems, which reduces the impact of hydraulic oil contamination on the system.

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