The working principle of servo electro-hydraulic bending machine and the function of each component

Compared with the pure electric drive, it has the strong power and durability of hydraulic pressure. 

The compact design eliminates the external pipeline. 

At the same time, the system is directly installed on the oil cylinder, which is cleaner and leak-free.

The system converts the electrical signal in the CNC controller into mechanical linear motion. 

In order to complete this movement, the signal is transmitted between the machine tool CNC controller and the motor drive controller. 

The synchronous oil cylinder controls the tracking and fast operation according to the preset working curve. 

A variable speed servo pump unit is used to drive and control the position of the bending tool and the bending force during the bending process.

1、 Principle of servo electrohydraulic synchronous bending machine

The working process in which the pressure generated by the hydraulic system is transmitted through the upper and lower molds to finally obtain the required material shape.

2、 Correct use of servo CNC bending machine

1. First, turn on the power supply, turn on the key switch on the control panel, and then press the oil pump to start.

2. Stroke adjustment: pay attention to the adjustment of stroke when using the CNC bending machine, and make sure to test run before bending. 

    When the upper die of the CNC bending machine descends to the bottom, there must be a gap of plate thickness, otherwise the die and machine will be damaged.

3. For the selection of bending notch, generally select a notch 8 times the width of the plate thickness.

4. Generally, there are electric fast adjustment and manual fine adjustment for the adjustment of rear stopper, the method is the same as that of plate shears.

5. Press the foot switch to start bending. The bending machine is different from the shearing machine, and can be released at any time. 

    Release the foot CNC bending machine, and then stop, and then press again to continue down.

3、 The function of hydraulic system components of double servo CNC bending machine

1. Function of hydraulic pump:

The hydraulic pump is the energy device in the hydraulic system, and is the power component that provides a certain flow and pressure of oil to the hydraulic system. 

It is driven by an electric motor and constantly absorbs or presses oil from the oil tank to convert rotating mechanical energy into fluid pressure energy. 

Hydraulic pump is an indispensable core component of every hydraulic system.

2. Function of filter:

Filter the impurities mixed in the hydraulic oil to reduce the pollution of the oil entering the hydraulic system and ensure the normal operation of the system.

3. Function of electromagnetic directional valve:

The electromagnetic directional valve is the intermediate conversion element between the hydraulic control system and the electrical control system in the hydraulic equipment. 

The button switch, travel switch and various relays such as time, 

current and pressure send electrical signals according to the provisions of the paper to make the solenoid valve energized or de-energized.

Under the cooperative action of the electromagnet suction and the spring in the valve, the slide valve is pushed to move, thus making the current oil circuit on, off, switched or unloaded. 

This will control the action and function of the hydraulic system and the whole hydraulic equipment.

4. Function of overflow valve:

The main function of overflow valve is to maintain constant pressure in the hydraulic system. 

It is often used in throttling speed control system and in combination with flow control valve to regulate the flow into the system and keep the system pressure basically constant.

5. Function of one-way throttle valve:

It is basically the same as the overflow valve. It controls and regulates the flow into the hydraulic system to keep the pressure of the hydraulic system basically constant.

6. Function of speed control valve:

Control and regulate the flow rate of oil in the hydraulic system, keep the pressure of the hydraulic system constant, and maintain the normal operation of the hydraulic system.

7. Function of hydraulic cylinder:

According to its structure, hydraulic cylinders are divided into piston cylinders, piston cylinders and swing cylinders. 

The piston cylinder and plunger cylinder can realize reciprocating motion, output thrust and speed, while the swing cylinder can realize reciprocating motion less than 360 °, output torque and angular speed. 

In addition to single use, hydraulic cylinders can also be combined or combined with other mechanisms to complete special functions.