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The electro-hydraulic servo CNC bending machine is a device that uses an electro-hydraulic servo system to control the synchronization of dual cylinders and cooperates with a high-precision grating ruler to form a fully closed-loop control. This bending machine not only has high precision and high repeatability positioning accuracy, but also has a fully functional back gauge mechanism and CNC cylinder deflection automatic compensation system, which can overcome the influence of slider deformation on workpiece quality during work, and ensure good straightness and bending angle of the processed workpiece.
Hydraulic System: The pressurized oil is directed to hydraulic cylinders, which extend to move the press brake’s ram (upper beam) downward.
Bending Action: The ram presses the metal sheet against a V-shaped die, applying controlled force to achieve precise bends.
Control System: An electric CNC/PLC system regulates pressure, ram position, and bending speed for accuracy and repeatability.
Return Stroke: After bending, the hydraulic valve reverses oil flow, retracting the cylinders to lift the ram.
Key Components: Electric motor, hydraulic pump, cylinders, ram, dies, CNC/PLC controller.
It uses an electric motor to power a hydraulic pump, which generates pressurized oil to drive hydraulic cylinders. These cylinders move the ram (upper beam) to apply force for bending metal sheets against a die.
Energy efficiency: The electric motor only runs when needed, reducing power waste.
Precision: Integrated CNC/PLC controls improve accuracy and repeatability.
Lower noise: Quieter than fully hydraulic systems due to optimized pump operation.
No. Hydraulic oil is essential for power transmission in the cylinders. However, modern systems use sealed circuits to minimize leaks and fluid replacement.
Precision depends on:
CNC/PLC controls: Compensates for material springback and adjusts ram position.
Tooling quality: Sharp, well-aligned dies improve accuracy.
Operator skill: Proper programming and setup are critical.
Contact us to solve a series of problems in sheet metal processing for you.
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Room D202,No.8,Qingshui Industrial Park,Qingshui Street,Wuhu Disrtict, China(Anhui)Pilot Free Trade Zone
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