Automatic tool changing device for numerical control cutting machine of wood-working machine

The utility model discloses an automatic tool changing device for a numerical control cutting machine of wood-working machinery. Comprising a tool magazine fixing base, a driving device installed below the tool magazine fixing base, a tool holder fixing base connected with the driving device, a guiding device installed below the tool magazine fixing base and connected with the tool holder fixing base, and a plurality of tool holders installed on the tool holder fixing base at intervals. The cutter holder fixing seat comprises a cutter holder vertical plate and a cutter holder transverse plate, a first mounting groove is formed in one side of the cutter holder vertical plate, one end of the driving device is mounted in the first mounting groove, a second mounting groove is formed in the side, away from the driving device, of the cutter holder vertical plate, and one end of the cutter holder transverse plate is mounted in the second mounting groove. The driving device and the tool holder vertical plate as well