Cutter replacing device for gantry drilling and tapping center

The utility model relates to the technical field of gantry drilling and tapping centers, and discloses a cutter replacing device for a gantry drilling and tapping center, which comprises a base, an operating table is fixedly mounted on the base, a cutter box is mounted on the right side of the operating table, a rotating shaft is mounted in the cutter box, and the rotating shaft is controlled to start by an internal motor. The number of the rotating shafts is two, the rotating shafts are located on the front side and the rear side of the tool box correspondingly, gear belts are meshed with the surfaces of the rotating shafts, and a plurality of sets of tool containing frames are fixedly installed on the outer sides of the gear belts through connecting pieces. And by arranging the tool placing frame, the tool can be kept in a stable clamping state in the tool replacement process, the effect that the tool shakes, and the installation precision is low is avoided, and the tool installation precision is improved.