What Is The Difference Between Ordinary Welding Cylinders, Servo Cylinders And Digital Cylinders
2023-12-11
What is the difference between ordinary welding cylinders, servo cylinders and digital cylinders
In the machinery industry, hydraulic cylinders are an indispensable and important role. Whether it is a folding arm crane of tens of meters or a jack less than knee height, hydraulic cylinders play a huge role. With the development of industry and the improvement of processing requirements, hydraulic cylinders also have new branches-digital cylinders and servo cylinders. Today I will talk to you about the difference between digital cylinder, servo cylinder and ordinary welding cylinder.
The biggest difference between servo cylinders and ordinary welded hydraulic cylinders lies in their design ideas and uses.
The core of the ordinary oil cylinder is to convert hydraulic energy into mechanical energy through reciprocating or swinging motion. The oil cylinder itself is a large executive element, and some oil cylinders also have the function of positioning; the servo oil cylinder is mainly designed for control purposes, and designers pay more attention to its dynamic performance. The entire hydraulic system has three parts: control components, power components and executive components. The control element is a valve, also called a servo valve, the power element is a pump, and the cylinder and motor are executive elements.
The core of servo hydraulics is that control is not hydraulic.
Because hydraulic pressure is the largest transmission power-to-volume ratio, it is more in line with vigorously carrying small loads (relatively), hydraulic transmission was chosen to improve the principle of response, and its focus is still on control. The core problem of the hydraulic system is to improve transmission efficiency and energy saving, so load-sensitive and closed systems appear; and the servo system is a typical low-efficiency system, which uses efficiency for dynamic response, which is the opposite of the hydraulic system, but the current servo system The efficiency is getting higher and higher.
Servo cylinders have requirements for low friction, no crawling, higher frequency response, and low internal and external leakage. Therefore, friction should be considered when designing servo cylinders, because it has an impact on the dynamic response, control accuracy, and stability of the system. Therefore, the servo cylinder usually polishes or precisely grinds the inner surface of the cylinder barrel after hard chrome plating. Ordinary oil cylinders do not need to do this processing, as long as the cylinder body meets the strength requirements. In addition, in the seal of the oil cylinder, ordinary oil cylinders only need to prevent the internal leakage and external leakage of hydraulic oil. Servo hydraulic cylinders must not only prevent internal and external leakage, but also require the sealing ring to have similar dynamic and static friction coefficients, and the friction coefficient must As small as possible. If a high repetition speed is required, a certain amount of internal leakage is sometimes required.
Servo cylinder
The digital cylinder is an upgraded version of the servo cylinder, and can also be called a digital servo cylinder.
The biggest difference between it and the servo cylinder is the structure of the cylinder. The digital cylinder adopts a direct connection method to directly integrate the servo motor, servo valve, and detection feedback screw on the hydraulic cylinder, and is controlled by a standardized numerical control system. In addition to maintaining the advantages of the servo cylinder, it also has many advantages such as maintenance-free, easy operation, and
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