Double-layer shrapnel clamp

The invention discloses a double-layer shrapnel clamp. The double-layer shrapnel clamp includes a clamping mechanism which is connected and fixed to a rotating shaft by a screw. The clamping mechanismincludes a double-layer spring piece. When a five-axis swing head moves to an appropriate position, a motor of the rotating shaft stops rotating and brakes the rotating shaft, and then hydraulic oilpushes a hydraulic top ring to move and applies the force on the double-layer spring piece, meanwhile, the clamp further applies the reaction force on the double-layer spring piece, large friction force is generated and applied to the rotating shaft, and the rotating shaft does not rotate due to the large cutting force during processing; when the cutting at the position is finished, the oil supplyis stopped, the force of the restoration and deformation of a reset spring and the double-layer spring pieces resets the hydraulic top ring and loosens the double-layer spring piece, and the motor conveniently drives the rotat