Cutting device for ship transmission shaft machining

The utility model relates to the technical field of ship machining, in particular to a cutting device for machining a ship transmission shaft. The utility model provides a cutting device for ship transmission shaft machining, which can prevent a worker from holding a transmission shaft with hands during cutting and can protect splashing scrap iron. A cutting device for ship transmission shaft machining comprises a base, a guide screw rod, a servo motor and the like, the upper side of the front portion of the base is rotationally connected with the guide screw rod, the right side of the front portion of the base is connected with the servo motor, and an output shaft of the servo motor is connected with the right side of the guide screw rod. Through cooperation of the rotating frame and the torsional spring, the protective cover can drive the clamping piece to rotate, open and close, then the clamping piece presses the transmission shaft in the cutting process, meanwhile, the protective cover is matched to bloc