Patent ID: 7604584

Claim:
An automatic tool-changing arm of an automatic tool changer applicable to a machine tool, primarily comprising: an immovable platform; a movable platform located below the immovable platform; a platform driving device driving the movable platform to vertically move with respect to the immovable platform; a gear assembly settled on the moveable platform; an arm body fixedly attached to the movable platform and to be rotated relative to the movable platform about an axis by the gear assembly; and at least one rod fixedly attached to the movable platform and a corresponding through hole in the immovable platform arranged such that the at least one rod slides, during the vertical movement, in the corresponding through hole along an axis that is not coaxial with the axis of rotation of the arm body; wherein the arm body has two ends each equipped with a clamp driving device and a power clamp driven by the clamp driving device.