Cutting machine head capable of adjusting chamfering angle

A cutting machine head capable of adjusting the chamfering angle comprises a shell, a rotatable cutting blade, a cutting motor connected with the cutting blade and used for driving the cutting blade to rotate, a motor fixing plate arranged in the shell in a turnover mode and used for installing the cutting motor, and a turnover assembly arranged on the shell, connected with the motor fixing plate and used for driving the motor fixing plate to turn over. The rotating shaft is rotatably arranged in the shell, the swing arm is connected with one end of the rotating shaft, the overturning oil cylinder is connected with the swing arm and drives the swing arm to rotate, the oil cylinder base is arranged on the shell and used for installing the overturning oil cylinder, the motor fixing plate is connected with the rotating shaft, and the overturning oil cylinder is hinged to the oil cylinder base. The overturning oil cylinder drives the swing arm to rotate to drive the rotating shaft to rotate so as to drive the mot