Cutting device

The utility model relates to the technical field of machining, in particular to a cutting device which comprises a base, a clamping machine head, a T-shaped clamping plate, a rotating disc, a motor, a clamping device and a machining device, the clamping device comprises a fixing ring, a pushing bolt, an arc-shaped clamping plate and a limiting groove, and the machining device comprises a sliding rail, a supporting table and a fixing table. When the rotor clamping device is used, a rotor is placed in the fixing ring, the pushing bolt is screwed down, the arc-shaped clamping plates are tightly attached to the surface of the rotor, and meanwhile the T-shaped clamping plates are fixed and clamped through the limiting grooves in the surface of the fixing ring; when the output end of the motor drives the rotating disc to rotate, the fixing ring clamped by the T-shaped clamping plate can be driven to rotate, the cutting tool is fixed to the fixing table through the limiting bolt, the supporting table drives the cutt