PERFORMANCE: hydraulic dive,swing beam,return of knife is smooth and prompt by accumulator nitngen cylinder. possessing a speed blades gap adjusting device, permit to adjust steplessly the blades gap. the stroke and frequency of shearing can be controlled. The machine has the function of single shearing and automatic continuous shearing. after inputting precomputed data, the back gayge can be automatically moved, positioned and stopped. the vertical gripper of intellet position is controlled by pneumatic system.