Major diameter circular arc wheel Truing machine

The utility model relates to a major diameter circular arc wheel Truing machine, fix including frame, emery wheel rotary driving mechanism and cutter and feed and rotational positioning institution, the frame includes that elevation structure, front and back relative position adjust the structure, emery wheel rotary driving mechanism includes transmission shaft, driving motor, the fixed feed mechanism of cutter includes knife rest and carriage saddle, micrometer, and the micrometric screw head of micrometer inserts in the carriage saddle rear through -hole to the top is equipped with the handle of a knife at the knife rest anterior segment and inlays the dress blind hole on the knife rest rear end face, rotational positioning institution includes dwang, locating piece, arc, round pin axle, screw board and rotor plate, and dwang one end is fixed at the carriage saddle tail end, and the other end lies in between the locating piece of both sides, on the arc groove that the locating piece was fixed on the arc to