A servo press is a type of hydraulic machine that uses liquid as the working medium, with a servo motor driving the main transmission oil pump to move the slider through the hydraulic system. A servo press uses a servo motor for driving, which can reduce control valve circuits. By controlling the speed of the AC servo motor, a servo press can control the pump's speed and therefore control its flow rate and speed.

AC servo motors have the advantages of good control performance, high reliability, and high efficiency, which can simplify the hydraulic system structure of the hydraulic press and improve its performance. For example, the forming quality of magnesium alloy is very sensitive to deformation speed at high temperatures, making it a challenging issue in the field of metal plastic forming. Using a regular hydraulic press may have difficulty forming these materials, whereas a servo press, due to its excellent performance, is very suitable for processing these materials.

Compared to ordinary hydraulic machines, servo hydraulic machines have the following advantages:

1. High flexibility, with slider movement controlled by CNC servo.

During the operation of ordinary hydraulic machines, the stroke and speed are manually adjusted, resulting in low control precision. Hydraulic machines controlled by servo valves and servo pumps can achieve control through CNC methods, but they also have disadvantages such as low control precision, narrow controllable range, and low energy utilization. Servo hydraulic machines use servo motors as the main drive source, controlling the movement speed and position of the slider by adjusting the speed and direction of the servo motor, making it easy to achieve CNC servo control of the slider movement. Servo motors have the advantages of fast response speed, high adjustment accuracy, and wide speed range, allowing for servo control of forging energy and setting the working curve of the slider within the required range.

2. Compact structure, easy maintenance.

Ordinary hydraulic machines require complex hydraulic control circuits, have a complex structure, take up a large space, and are difficult to maintain. Servo hydraulic machines use servo motors for servo control, eliminating some complex circuit systems and simplifying the hydraulic circuit of the hydraulic machine.

3. Energy saving, noise reduction, improved energy utilization, and work environment improvement.

Ordinary hydraulic machines produce loud noise during operation, seriously polluting the industrial production environment and affecting the health of operators. Servo hydraulic machines can reduce noise by an average of 3-20 dB compared to ordinary hydraulic machines, effectively improving the industrial production environment. Ordinary hydraulic machines consume more energy during operation with low energy utilization. Servo hydraulic machines can save 20%-60% of electricity compared to ordinary hydraulic machines, significantly improving energy efficiency and utilization.

4. High productivity.

Servo hydraulic machines can digitally adjust the slider speed and stroke frequency, enabling different motion speeds during processing stages. Therefore, by increasing the speed during idle stages, the time spent in idle stages is reduced, significantly increasing productivity.

The development focus of domestic servo hydraulic machines is mainly on energy saving because servo motors have higher efficiency and power factor compared to asynchronous motors, making speed adjustment convenient and almost eliminating light-load losses. In addition, servo hydraulic systems use servo motors instead of traditional control valves (pressure valves, flow valves, and speed valves), partially saving energy consumption from these valves.

Overall, China's servo hydraulic technology still lags behind regions like Germany, Japan, and Taiwan. The development of servo hydraulic machines depends mainly on the development of servo motors and servo control systems, which is an important factor affecting the development of servo hydraulic machines in China. However, XIRO's servo hydraulic machines introduce foreign technology and use components from brands like Rexroth and Delta, and can also be customized with specified brands by customers, offering the most advanced and stable technology worldwide at the price of Chinese machinery.

With the development of forging technology, servo presses will be more widely used in various industrial fields, and servo presses are the main direction of development in the future forging equipment industry. In the long run, the future development trends of servo presses are as follows:
1. Speed and efficiency.

In order to meet the needs of industrial production, servo presses must have the ability to operate at high speed and high efficiency, significantly improving the working efficiency of servo presses.
2. Integration of electromechanical and hydraulic systems.
With the development of science and technology, hydraulic technology is closely integrated with electronic technology and manufacturing technology. The integration of servo hydraulic systems helps to improve the stability and controllability of hydraulic systems.
3. Automation and intelligence.
Servo presses should be able to automatically detect and adjust the working status, have automatic fault diagnosis and elimination functions, and use adaptive control technology to improve the automation and intelligence of servo presses, enabling intelligent processing.
4. Integration and standardization of hydraulic components.
Integrated components reduce the complexity of hydraulic machinery, making it easier for the production, maintenance, and upkeep of servo presses.
5. Networking.
Connect servo presses to the network, allowing personnel to centrally manage and control the entire production line through the network, and achieve remote maintenance and fault diagnosis of the servo press production line through the network.
6. Multi-station and multi-purpose.
Currently developed servo presses are mostly used for single purposes in production, but many forging processes require multi-station and multi-purpose servo presses. Multi-station servo presses can save costs by performing multiple processing steps on one machine, reducing production costs.
7. Heavy-duty.
Existing servo presses are mostly medium and small-scale machines that cannot meet the demands of large forgings. With the appearance of high-power and high-torque servo motor technology, servo presses will develop towards heavy-duty applications.

Furthermore, as servo presses are increasingly used in various industries, they will also develop towards efficiency, intelligence, networking, and multi-functionality.

Core Advantages of Servo Press Machines · XIRO (xiromachinery.com)

Advantages of Electric Servo Presses · XIRO (xiromachinery.com)

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