Patent ID: 8549964

Claim:
A machine tool for performing at least turning operations, comprising: a machine body; a tool rest movably mounted on said machine body, to hold a tool; a first headstock mounted on said machine body, to rotatably hold a workpiece to rotate about a Z axis; and a second headstock movably mounted on said machine body in confronting relation to said first headstock, said second headstock to rotatably hold the workpiece to rotate about the Z axis; wherein said second headstock includes a front chuck, disposed on a front side of a central axis thereof, for detachably gripping the workpiece, and a rear chuck disposed on a rear side of said central axis thereof, for detachably gripping the workpiece, and said second headstock performs a front chuck-to-rear chuck changing function by swiveling about said central axis, the central axis extending parallel to a Y-axis direction, where said Y axis extends in a horizontal direction and is orthogonal to both the Z axis and to an X axis that extends in a vertical direction.