What is a servo press? Introduction to the advantages of servo press

With the increasing requirements for product lightweight and reliability, traditional presses are increasingly unable to meet the needs of product manufacturing. In this context, the demand for servo presses will explode, and it can be foreseen that servo presses will become a new frontier of competition for metal forming machine tool companies.

1. Definition of servo press

The servo press is a press machine that uses an AC servo motor as a power source and converts the motor's rotary motion into the linear motion required by the slider through a screw, crank connecting rod, multi-link or other mechanism. It can realize flexible and controllable processing trajectory and significantly improve the forming quality and production efficiency of complex-shaped parts, deep-drawn parts and high-strength steel plate stamping.

2. Current status of servo press industry

During the 13th Five-Year Plan period, the market capacity of metal forming machine tools in my country was between 63.12 billion and 75.86 billion yuan, and 63.12 billion yuan in 2020, of which stamping machine tools accounted for about 80%, or about 50 billion yuan. Based on the proportion of 15% for servo presses, the market size of servo presses in 2020 was approximately 8 billion yuan.

3. Advantages of servo press

As an emerging product in the metal forming machine tool industry, servo presses have many advantages over traditional presses.

Compared with hydraulic presses, servo presses can improve efficiency by 30% to 50%, and can recycle electricity at low speeds, saving 25% to 50% of electricity. Since the servo press has precise control over the stamping process, it can effectively reduce wrinkling and cracking of parts and improve the quality of parts.

Compared with mechanical presses, servo presses make up for their shortcomings such as fixed stamping mode and poor adaptability to stamping processes. For example, servo presses have the advantage of digital programmable adjustment for different materials and different forming processes, and have flexible process adaptability; servo presses eliminate the clutch and brake, reduce or eliminate gear transmission, and cooperate with high-precision displacement sensors and load sensors to achieve automatic correction of the bottom dead point.

4. Development prospects

At present, servo presses in Germany, Japan and other countries account for more than 80% of metal forming machine tools, and are a must for metal forming companies to carry out digital transformation in the future. At present, servo presses in my country account for only 20%. With the gradual complexity of product shapes and the increase in energy-saving requirements under the "double reduction" and "double carbon" policies, traditional stamping equipment can no longer meet the industrial needs of future processing. On the other hand, the Sino-US trade war has gradually intensified in recent years, and the manufacturing industry has received more and more attention from the country. my country has vigorously promoted the basic strengthening project and the industrial base reconstruction project, among which metal forming machine tools are a major focus. Servo motors, servo drives and control software are key technologies. With the advancement and breakthroughs of my country's technology, the process of servo presses replacing traditional presses will gradually accelerate, and the industry will have great development space during the "14th Five-Year Plan" period.

In the future, servo presses will develop in the following four directions

(1) Full servo technology. In order to improve forming efficiency, precision and energy saving, servo technology will be fully promoted in future presses.

(2) High efficiency and high precision. Improve forming efficiency and enhance competitiveness in industries such as electronic precision manufacturing.

(3) Energy saving. Further realize energy saving of large and medium-sized presses and develop capacitor storage systems.

(4) Internet of Things (IOT). Combining IOT technology and AI visual diagnosis technology, the operating status of the press can be recorded at any time, real-time monitoring and remote maintenance can be performed, the time of failure can be predicted, and downtime can be reduced.