Turn-milling device and method for finish machining of automobile transmission shafts

The invention discloses a turn-milling device and method for finish machining of automobile transmission shafts and relates to the technical field of transmission shaft machining. The turn-milling device comprises a machine body, wherein a fixing plate is fixedly installed at the position, close to the rear end, of the upper end surface of the machine body; sliding rails are fixedly installed at two sides of the front end surface of the fixing plate separately; a moving plate is connected between the two corresponding sliding rails in a sliding manner; a rotating motor is fixedly installed atthe outer end of the moving plate; a drill rod is fixedly installed in the rotating motor; a limiting frame is fixedly installed at one side of the upper end surface of the machine body; a servo motoris fixedly installed in the limiting frame; a rotating shaft is fixedly installed at an output end of the servo motor, and a limiting plate is fixedly installed at the output end of the rotating shaft; a sliding groove is for