The servo hydraulic press is an energy-saving and high-efficiency hydraulic press that uses a servo motor to drive the main transmission oil pump, reduces the control valve circuit, and controls the slider of the hydraulic press. It is suitable for stamping, die forging, pressing, straightening, and other processes. The servo hydraulic press is mainly composed of a bow frame, Xintaiming, stamping slider, operating table, four guide columns, upper main cylinder, proportional hydraulic system, servo electrical system, pressure sensor, pipeline, and other parts.
The movement curve of the slider of the servo-hydraulic press can be set according to the stamping process, and the stroke is adjustable. This kind of press is mainly for high-precision forming of difficult-to-form materials and complex-shaped parts. It greatly improves the machining accuracy and stamping efficiency of the press. Moreover, it also cancels the flywheel, clutch, and other components, which reduces the production cost of the enterprise and saves energy.
Advantages of Servo Hydraulic Press
1. Energy saving
Compared with ordinary hydraulic presses, servo hydraulic presses have the advantages of energy saving, low noise, small temperature rise, good flexibility, high efficiency, and convenient maintenance. It can replace most of the existing common hydraulic presses and has broad market prospects. According to different processing technology and production tempo, the servo-driven hydraulic press can save 30% to 70% of electricity compared with the traditional hydraulic press.
2. Low noise
Servo-driven hydraulic oil pumps generally use internal gear pumps or high-performance vane pumps, while traditional hydraulic machines generally use axial piston pumps. 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. When the servo-driven hydraulic press is pressing and returning, the motor runs at the rated speed, and its emission noise is 5dB-10dB lower than that of the traditional hydraulic press.
When the slider is down and the slider is still, the servo motor speed is 0, so the servo-driven hydraulic press basically has no noise emission. In the pressure holding stage, due to the low motor speed, the noise of the servo-driven hydraulic press is generally less than 70dB, while the noise of the traditional hydraulic press is 83dB-90dB. After testing and calculation, under normal working conditions, the noise produced by 10 servo hydraulic presses is lower than that produced by an ordinary hydraulic press of the same specification.
3. Less heat
Since the hydraulic system of the servo-driven hydraulic press has no overflow and heat, there is no flow when the slider is stationary, so there is no hydraulic resistance and heat. The calorific value of its hydraulic system is generally 10% to 30% of that of traditional hydraulic machines. Due to the low heat generation of the system, most servo-driven hydraulic presses do not need a hydraulic oil cooling system. A low-power cooling system can be set for some large heat generation.
Because the pump is at zero speed most of the time and generates less heat, the oil tank of the servo-controlled hydraulic machine can be smaller than that of the traditional hydraulic machine, and the oil change time can also be extended. Therefore, the hydraulic oil consumed by the servo-driven hydraulic machine is generally only about 50% of that of the traditional hydraulic machine.
4. High degree of automation
The pressure, speed, and position of the servo-driven hydraulic press are fully closed-loop digital control, with high automation and good precision. In addition, its pressure and speed can be programmed and controlled to meet the needs of various processes, and it can also realize remote automatic control.
5. Efficient
Through proper acceleration and deceleration control and energy optimization, the speed of the servo hydraulic press can be greatly increased. The working cycle is several times higher than that of the traditional hydraulic press and can reach 10/min～15/min.
6. Easy maintenance
The hydraulic system is greatly simplified due to the cancellation of the proportional servo hydraulic valve, speed regulating circuit, and pressure regulating circuit in the hydraulic system. The cleanliness requirement of hydraulic oil is far less than that of a hydraulic proportional servo system, which reduces the influence of hydraulic oil pollution on the system.
The Development Trend of Servo Hydraulic Press
The development of servo hydraulic presses will show the following trends.
1. High speed and high efficiency. In order to meet the needs of industrial production, the servo hydraulic press must have the ability to run at high speed and efficiently, and greatly improve the working efficiency of the same service hydraulic press.
2. Electromechanical and hydraulic integration. With the development of science and technology, hydraulic technology is closely integrated with electronic technology and manufacturing technology. The integration of servo hydraulic system is conducive to improving the stability and controllability of the hydraulic system.
3. Automation and intelligence. The servo hydraulic press should be able to automatically detect and adjust the working state, and have the function of automatic troubleshooting. Adaptive control technology is adopted to improve the automation and intelligence of the servo hydraulic machine so that the servo hydraulic machine can realize intelligent processing.
4. Hydraulic components are integrated and standardized. The integrated components reduce the structural complexity of the hydraulic press and facilitate the production, maintenance, and maintenance of the servo hydraulic press.
5. Networking. Connect the servo hydraulic press to the network. The staff uniformly manages and controls the entire production line through the network, and realizes remote maintenance and fault diagnosis of the servo hydraulic press production line through the network.
6. Multi-station and multi-purpose. At present, the servo hydraulic press that has been successfully developed has a single production purpose, and many forging processes require multi-station and multi-purpose servo hydraulic presses. The multi-station servo hydraulic press can save the cost of purchasing multiple forging equipments. Realize the processing of multiple processes on one device, reducing production costs.
7. Heavy duty. At present, most of the existing servo hydraulic presses are small and medium-sized hydraulic presses, which cannot meet the needs of large forgings. With the emergence of high-power and high-torque servo motor technology, servo hydraulic presses will develop towards heavy duty.
Zhengxi’s servo hydraulic press adopts a self-developed servo system, which has the characteristics of energy saving, high efficiency, precision, and environmental protection. Zhengxi is a professional manufacturer of hydraulic presses, providing high-quality servo-hydraulic presses.
Post time: Jul-21-2023
