Automatic production line for high-speed rail brake disc locking nuts

The utility model discloses a high-speed rail brake disc locking nut automatic production line which comprises a polishing bin, a motor box is arranged in the middle of the bottom of the polishing bin, a rotating shaft is installed in the motor box, and the output end of the rotating shaft is connected with a rotating shaft penetrating into the polishing bin. A moving groove is formed in the end,located in the polishing bin, of the rotating shaft, moving grooves are formed in the two sides of the interior of the fixed table correspondingly, lead screws are arranged in the two moving grooves correspondingly, and moving blocks are arranged on the outer sides, located in the moving grooves, of the two lead screws. The two sets of screw rods are rotated at the same time, the movable block drives the limiting block to move on the fixed table through the interaction of the threaded hole and the screw rods, locking nuts of different types can be fixed, the locking nuts are fixed firmly through the two sets of limiti