Cutting device for optical glass bar blank

The utility model relates to a cutting device for optical glass bar blanks, which comprises a processing table top, one side of the top of the processing table top is fixedly connected with an electric sliding rail, the inner side of the electric sliding rail is slidably connected with a mounting sliding block, the top of the mounting sliding block is fixedly connected with a rotating motor, one side of the rotating motor is fixedly connected with a rotating shaft, and the other side of the rotating shaft is fixedly connected with a cutter. A rotating shaft is fixedly connected to one side of the top of the machining table top, a mounting cutter head is connected to one end of the rotating shaft in a sleeved mode, a limiting block is fixedly connected to the surface of the outer side of the mounting cutter head, a cutting knife is connected to the inner side of the limiting block through a shaft rod, a supporting spring is fixedly connected to one side of the cutting knife, and a mounting groove is fixedly fo