The difference between electro-hydraulic servo CNC press brake and torsion bar press brake

1. Different structural principles

The design principles of the two models are different, resulting in different structures to ensure synchronization on both sides of the bending slider. Torsional bar NC Press Brake adopts torsion shaft to connect the left and right swing rod, forcing the synchronization mechanism to move up and down on both sides of the cylinder, so the torsional bar NC press brake is a mechanical forced synchronization mode, and the parallelism of the slider can not be automatically checked and adjusted.

Electro-hydraulic servo Cnc Press Brake is installed with grating ruler, numerical control system can analyze the synchronization of both sides of the slider through grating ruler feedback information at any time, if there is error, numerical control system will be adjusted by proportional electro-hydraulic servo valve, so that both sides of the slider stroke synchronization. Numerical control system, hydraulic control valve group and grating ruler constitute the feedback closed loop control of CNC Press Brake.

2. Precision

Slider parallelism determines the bending accuracy of the workpiece, torsion bar press brake is mechanical to keep slider synchronization, there is no real-time error feedback, the machine itself can not make automatic mediation.

The electro-hydraulic servo CNC press brake can adjust the error through the feedback of the grating ruler, using the proportional valve in time, to keep the synchronization of the two sides of the slider.

3. Speed

The fast down speed and return speed of electro-hydraulic servo CNC press brake is much higher than that of torsional bar press brake. If the workpiece needs multi-step bending, torsion bar press brake each process must be set up separately, the processing process is very tedious. However, the electro-hydraulic servo CNC press brake can set each step of the process through the computer and save, can be continuous operation, greatly improve the speed of the bending step, improve the work efficiency.