Hole turning device for brake disc machining

The utility model discloses a hole turning device for brake disc machining, and relates to the technical field of industrial production. The device comprises a supporting mechanism and a fixing mechanism, the supporting mechanism comprises a supporting plate, hydraulic cylinders are detachably and fixedly connected to the four corners of the top of the supporting plate, a square plate is arranged above the supporting plate, the fixing mechanism comprises a circular plate, a connecting shaft is rotatably connected to the center of the circular plate, and the connecting shaft is fixedly connected to the supporting plate. Four arc-shaped plates are annularly arranged on the outer side of the connecting shaft at equal angles. According to the hole turning device, the circular plate is arranged, the brake disc is fixed above the circular plate in the hole turning process, and the notches are formed in the circular plate, so that double-face hole turning of different positions can be completed without turning over