Manhart Working principle of oil electric servo pump controlled bending machine

**Working principle of oil electric servo pump controlled bending machine**
1、 Introduction
The oil electric servo pump controlled bending machine is an important processing equipment in the modern sheet metal processing industry, which controls the hydraulic cylinder through the oil electric servo system for high-precision bending operations. This article will elaborate on the working principle of the oil electric servo pump controlled bending machine from the aspects of motor startup and pump control, hydraulic cylinder and bending, servo control synchronization, and precise adjustment.
2、 Motor start and pump control
1. Motor start: When the oil electric servo pump controls the bending machine, it first drives the motor to rotate through the electrical control system. Motors usually use high-performance servo motors, which have the characteristics of fast response speed and high positioning accuracy.
2. Pump control: The hydraulic pump connected to the motor starts to produce high-pressure hydraulic oil. The hydraulic pump adopts variable displacement pump or constant pressure pump, which can adjust the output flow rate and pressure of hydraulic oil according to the bending demand.
3、 Hydraulic cylinder and bending
1. Hydraulic cylinder structure: The hydraulic cylinder is the core executive component of the oil electric servo pump controlled bending machine, usually composed of a cylinder body, piston, sealing components, etc. The piston moves back and forth in the cylinder body, pushing the upper mold for bending operations.
2. Bending process: When the high-pressure hydraulic oil generated by the hydraulic pump enters the hydraulic cylinder, it pushes the piston forward, forming a certain angle between the upper and lower molds, thereby achieving the bending of the sheet metal parts. The size of the bending angle can be achieved by controlling the flow and pressure of hydraulic oil.
4、 Servo control synchronization
1. Servo control principle: The oil electric servo pump controlled bending machine adopts a servo control system to achieve precise control of the hydraulic cylinder movement. The servo control system includes servo motors, drivers, encoders, controllers, and other parts, which can detect the position and speed of hydraulic cylinders in real time and make precise adjustments based on preset bending parameters.
2. Synchronous control: During the bending process, in order to ensure synchronous motion between the upper and lower molds, the servo control system will synchronize and control two or more hydraulic cylinders. By adjusting the hydraulic oil flow and pressure of each hydraulic cylinder to move at the same speed and position, the accuracy and stability of the bending operation are ensured.
5、 Accurate adjustment
1. Position control: The oil electric servo pump controlled bending machine achieves precise adjustment of the hydraulic cylinder’s movement position through the position control function of the servo control system. The encoder detects the position information of the hydraulic cylinder in real-time and feeds it back to the controller. The controller calculates the hydraulic oil flow rate and pressure that needs to be adjusted based on the preset bending parameters and feedback position information, so that the hydraulic cylinder can accurately move to the target position.
2. Pressure control: In addition to position control, the servo control system can also accurately adjust the working pressure of the hydraulic cylinder. By adjusting the output flow rate and pressure of the hydraulic pump, as well as controlling the oil inlet and return speed of the hydraulic cylinder, the hydraulic cylinder maintains a constant working pressure during the bending process, thereby ensuring the stability and reliability of the bending operation.
6、 Conclusion
The oil electric servo pump controlled bending machine achieves high-precision bending of sheet metal parts through key technologies such as motor start and pump control, hydraulic cylinder and bending, servo control synchronization, and precise adjustment. With the continuous development and improvement of servo control technology, the oil electric servo pump controlled bending machine will play a more important role in the sheet metal processing industry.