Self-rotating machining type polishing machine

The utility model discloses a self-rotating machining type polishing machine, relates to the field of polishing machines, and aims to solve the problem that an existing polishing machine does not have the function of driving a steel pipe to rotate when polishing the steel pipe, the following scheme is provided: the polishing machine comprises a base, and two supporting legs which are symmetrically distributed are fixedly mounted at the bottom end of the base; the polishing device comprises a base, two symmetrically-distributed mounting grooves are formed in the base, screw rods are rotationally mounted in the mounting grooves correspondingly, moving blocks are arranged on the side walls of the screw rods in a threaded and sleeving mode correspondingly, polishing structures are arranged at the top ends of the moving blocks correspondingly, and driving devices are connected to the same ends of the two screw rods correspondingly; a first supporting block and a second supporting block which are symmetrically dist