Tapping tool for bolt hole of guide rail

The utility model discloses a guide rail bolt hole tapping tool which comprises a first transverse plate, a second transverse plate is arranged above the first transverse plate, a plurality of telescopic rods are connected to the inner wall of the second transverse plate in an inserted mode, a plurality of clamping mechanisms are arranged on the inner wall of the first transverse plate, and a foot stool mechanism is arranged below a fixing plate. A shell is arranged above the second transverse plate, and a transmission mechanism is installed in the shell. A handle is arranged on one side of the outer wall of the shell, and one end of the handle penetrates through the side wall of the shell and is fixedly connected to the outer wall of the first bevel gear. The guide rail bolt hole tapping tool relates to the technical field of machining equipment, through the cooperation of the bearing, the rotating disc and the first threaded rod, the guide rail bolt hole tapping tool can clamp a plurality of guide rails at