Tool for taking out fractured bolt in variable pitch bearing hole

The utility model relates to a tool for taking out a fractured bolt in a variable pitch bearing hole, which comprises a drilling machine, a bearing ring and a limiting piece, and the output end of the drilling machine is connected with a drill bit; transverse plates are connected to the left end and the right end of the lower portion of the drilling machine, vertical rods are arranged on the two transverse plates, the upper end of each vertical rod penetrates through the corresponding transverse plate to be connected with a baffle, the lower ends of the two vertical rods are jointly connected with a bearing ring, a drill bit and the center of the bearing ring are vertically opposite, limiting pieces are arrayed on the bearing ring, and each limiting piece comprises a sliding groove, a sliding block and a vertical rod. The sliding blocks are arranged in the sliding grooves in a sliding mode, the bottom faces of the sliding blocks are connected with vertical rods, screw rods in threaded connection with the slid