Classification and principle of hydraulic press

Update:29 Dec 2021

The hydraulic press is composed of the main engine and […]

The hydraulic press is composed of the main engine and the control mechanism. The main part of the hydraulic press includes the body, the main cylinder, the ejector cylinder and the liquid filling device. The power mechanism is composed of an oil tank, a high-pressure pump, a low-pressure control system, an electric motor, and various pressure valves and directional valves. Under the control of the electric device, the power mechanism realizes the conversion, adjustment and delivery of energy through pumps, cylinders and various hydraulic valves to complete the cycle of various technological actions.

Classification of hydraulic presses: There are many types of machinery that utilizes hydraulic pressure transmission made by Pascal's law. Of course, the uses are also diverse according to needs. For example, according to the type of liquid that transmits pressure, there are two major categories: hydraulic press and hydraulic press. The total pressure generated by the hydraulic press is relatively large, and it is often used for forging and stamping. Forging hydraulic press is divided into die forging hydraulic press and free forging hydraulic press. The die forging hydraulic press uses molds, while the free forging hydraulic press does not use molds.

The first 10,000-ton hydraulic press manufactured in my country is a free forging hydraulic press. Hydraulic presses (hydraulic presses) are mainly divided into four-column type, single-column type (C type), horizontal type, vertical frame, etc. according to the structure. According to the purpose, it is mainly divided into metal forming hydraulic press, bending hydraulic press, drawing hydraulic press, punching hydraulic press, powder (metal, non-metal) forming hydraulic press, pressing hydraulic press, extrusion hydraulic press, etc. The working principle of the hydraulic press: the hydraulic press relies on the liquid medium, that is, the hydraulic oil uses the static pressure of water and oil. How to quickly understand the schematic diagram of a hydraulic machine, to understand the principle of each component in the diagram, such as the connection between the oil pump, one-way valve, throttle valve, relief valve, X-position and X-way solenoid valve, and draw the oil (gas) For the direction of the medium, refer to the relevant instructions again for easy understanding.