This is a Q11-3X1600 pneumatic shearing machine that can cut a maximum plate thickness of 3 millimeters and a maximum plate width of 1.6 meters. The pneumatic system provides power to drive the blade up and down to cut metal sheet metal. When the clutch pedal is pressed, the pneumatic system is activated, and the upper blade quickly moves down to cooperate with the lower blade to cut the sheet metal. After completion, the upper blade returns to its initial position under the action of the pneumatic system and waits for the next operation.