Patent ID: 7651453

Claim:
An automatic chuck jaw change system in a combined machining lathe, comprising: a combined machining lathe including a main spindle rotatable about an axis, having a chuck for gripping a work, and a tool spindle, to which a machining tool and a jaw tool for operating a jaw of the chuck are selectively mounted, which tool spindle moves along a Z-axis parallel to the axis of the main spindle, an X-axis orthogonal to the axis of the main spindle and a Y-axis perpendicular to a plane formed by the Z-axis and the X-axis and rotates around a B-axis as a rotational axis perpendicular to the plane formed by the Z-axis and the X-axis; and a robot disposed in front of the combined machining lathe, wherein the robot has a nut runner hand for aiding in an exchange of the jaw and a jaw hand selectively mounted on the front end of an arm thereof, and the jaw tool and the robot cooperate to engage and automatically change the jaw of the chuck.