Tapping machine for ruler seat machining

The tapping machine comprises a tapping piece, a tapping frame and a machining piece, a sliding rail is arranged in the tapping frame, a movable block is arranged on the sliding rail, a first driving piece for driving the movable block to move is arranged in the tapping frame, the movable block is provided with a near end, a middle end and a far end, and the near end, the middle end and the far end are arranged on the machining piece. The tapping piece is arranged at the far end and arranged in the machining piece, and the middle end is provided with a second driving piece for driving the tapping piece to rotate. The first driving piece is arranged to control the tapping head to move up and down, the second driving piece is arranged to change the initial driving force from the vertical direction to the transverse direction so that the tapping head can be separated from the narrow space, the clamping air cylinder is arranged to clamp and fix the tapping piece, and the problem that tapping in the narrow space c