Performance 1、Hydrauic dive, swing beam, retum of knife is smooth and prompt by accumulator nitmgen cylinder. 2、possessing a speed blades gap adjusting device, permit to adjust steplessly the blades gap. 3、the stroke and frequency of shearing can be controlied. The machine has function of single shearing and automatic continuous shearing. 4、after inputting precomputed date, the back gauge can be automatically moved,positioned and stopped. 5、the vertical gripper of intellect position is controlled by pneumaticsystem.