Brake disc drilling device

The utility model discloses a brake disc drilling device which comprises a base, a top plate is arranged above the base, a supporting column is arranged between the top plate and the base, the two ends of the supporting column are fixedly connected with the top plate and the base respectively, a positioning ring is fixedly connected to the top of the base, and a clamping assembly and a fixing assembly are arranged at the top of the base. The top of the top plate is fixedly connected with a supporting rod, and the top of the supporting rod is fixedly connected with a fixing plate. By arranging the dust suction port and the fan, waste materials in the drilling process can be sucked in from the dust suction head, waste material accumulation is prevented from influencing the drilling smoothness, meanwhile, the surrounding environment is prevented from being polluted, by arranging the second motor and the electric push rod, after drilling is completed at one position, the electric push rod moves upwards, the secon