Press includes hydraulic transmission and mechanical transmission.

Mechanical transmission is called punching machine.

Hydraulic transmission press is also called hydraulic press and oil press.

In national production, stamping technology has been more and more widely used because of its advantages of saving materials and energy, high efficiency, low technical requirements for operators and products that cannot be machined through various molds.

Stamping production is mainly aimed at sheet metal. Through the die, blanking, punching, forming, stretching, trimming, fine punching, shaping, riveting and extruding parts can be made. , widely used in various fields. For example, we use switch sockets, cups, cabinets, plates, computer cases, and even missile planes ... there are many accessories that can be produced by punching machines through molds.

Brief introduction of hydraulic press

The hydraulic press consists of a main engine and a control mechanism. The main machine part of hydraulic press includes machine body, master cylinder, ejector cylinder and liquid filling device. The power mechanism consists of oil tank, high-pressure pump, low-pressure control system, motor, various pressure valves and reversing valves. Under the control of the electric device, the power mechanism realizes energy conversion, adjustment and transmission through pumps, oil cylinders and various hydraulic valves, and completes the cycle of various technological actions.

[Edit this paragraph] Classification of hydraulic press

Hydraulic presses are classified according to their structural forms.

Now it is mainly divided into four-column hydraulic press, single-column (C-type) hydraulic press, horizontal hydraulic press and vertical frame hydraulic press.

According to the purpose of the hydraulic press.

Mainly divided into metal forming hydraulic press, bending hydraulic press, stretching hydraulic press, blanking hydraulic press, powder (metal, nonmetal) forming hydraulic press, press-fitting hydraulic press, extrusion hydraulic press and so on.

[Edit this paragraph] Working principle of hydraulic press

Hydraulic transmission is a transmission mode that uses hydraulic pressure to transmit power and control. The hydraulic device consists of hydraulic pump, hydraulic cylinder (hydraulic motor and other actuators), hydraulic control valve and hydraulic auxiliary components.

Hydraulic pump: a conversion device that converts mechanical energy into hydraulic energy.

Hydraulic cylinder (actuator such as hydraulic motor): converts hydraulic energy into mechanical energy.

Control valve: controls the flow, direction and pressure of hydraulic oil and the working sequence of hydraulic actuators to protect the hydraulic circuit. Generally speaking, it is to control and adjust the flow, pressure and flow of hydraulic medium, so as to control the movement direction, output force or torque, movement speed and action sequence of the actuator, limit and adjust the working pressure of the hydraulic system, and prevent overload (such as one-way valve, reversing valve, relief valve, sequence valve and throttle valve).

Auxiliary parts: 1, oil tank: used for oil storage and heat dissipation. Separate impurities 2 from air and oil, tubing and tubing joint 3, oil filter 4, pressure gauge 5 and sealing element.