Automatic tool changing and warehousing system and automatic tool changing and warehousing method

The invention provides an automatic tool changing and warehousing system. The automatic tool changing and warehousing system comprises a warehousing device, a transferring device and a tool changing and taking device. The transferring device comprises a track and a mechanical arm, the track is provided with a path passing through the warehousing device and the at least one cutting device, and the mechanical arm moves along the track; the cutter replacing and taking device is arranged on the mechanical arm and driven by the mechanical arm to move between the storage device and the at least one cutting device along the track. Wherein when the cutter replacing and taking device is moved to at least one cutting device, an old cutter wheel is detached from the cutting device or a new cutter wheel is loaded on the cutting device; and when the cutter replacing device is moved to the storage device, the new cutter wheel is taken from the storage device, or the old cutter wheel is put into the storage device. The mech