Reaming and positioning device for butt-joint bolt holes in central wing of airplane

The invention provides a reaming positioning device for butt-joint bolt holes in a central wing of an airplane, which belongs to the technical field of aviation equipment, is matched with a positioning pin for use and comprises a four-bar mechanism consisting of a short handle, a connecting rod, a long handle and a rocker arm, a circular ring is arranged below the rocker arm, a positioning sleeve is connected below the long handle, and the circular ring and the positioning sleeve are matched and clamped at a position to be reamed. The distance between the circular ring and the positioning sleeve is adjusted by adjusting the position of the long handle on the positioning sleeve, during use, the positioning pin is inserted into the positioning sleeve, the head of the positioning pin is inserted into a butt-joint bolt hole to be reamed for positioning, the positioning pin is withdrawn after the short handle is pushed to complete clamping, and a reamer is used for reaming operation. The device can be effectively