A hand for exchanging claws of a chuck is configured to be fitted to a transfer device so as to attach and detach a claw to and from a fitting groove provided in the chuck of a machine tool. The hand for exchanging claws includes: a hand part capable of grasping the claw; and a compliance device that fits the hand part to the transfer device, and allows relative displacement between the transfer device and the hand part.

The present application discloses a vertical lathe chuck mounting rack, which is composed of a decelerator A, a motor A, a rack, a motor B, a decelerator B, a linear guide rail C, a ball screw, a cylinder, a guide rail sliding seat C, a flange and the like, wherein the motor A is capable of driving a horizontal rack to move horizontally on a cross beam along a linear guide rail B. The motor B is capable of driving a lifting rack to move vertically along the linear guide rail C. The cylinder is capable of driving a telescopic rack to move horizontally along a linear guide rail A.

A machine tool for cutting swarf entangled with a tool. A chuck is attached to a spindle of the machine tool, and grips a workpiece. The chuck is constituted by a first sub chuck and a second sub chuck detachably attached to the first sub chuck. The second sub chuck provided with a cutting tool is attached to the first sub chuck, and the cutting tool is caused to perform an opening/closing operation using a drive force of an opening/closing drive mechanism for gripping/releasing the workpiece, thereby cutting swarf entangled with a turning tool into fragments.

The present application discloses a vertical lathe chuck mounting rack, which is composed of a decelerator A, a motor A, a rack, a motor B, a decelerator B, a linear guide rail C, a ball screw, a cylinder, a guide rail sliding seat C, a flange and the like, wherein the motor A is capable of driving a horizontal rack to move horizontally on a cross beam along a linear guide rail B. The motor B is capable of driving a lifting rack to move vertically along the linear guide rail C. The cylinder is capable of driving a telescopic rack to move horizontally along a linear guide rail A.

A two-dimensional array of discrete dielectric template structures is formed over a substrate. A first dielectric spacer matrix may be formed in lower portions of the trenches between the discrete dielectric template structures. A second dielectric spacer matrix layer may be formed in upper portions of the trenches. A pair of a source cavity and a drain cavity may be formed within a volume of each of the discrete dielectric template structures. A source electrode and a drain electrode may be formed in each source cavity and each drain cavity, respectively. The gate electrodes may be formed prior to, or after, formation of the two-dimensional array of discrete dielectric template structures to provide a two-dimensional array of field effect transistors that may be connected to, or may contain, memory elements.

A jaw exchanger includes a stocker configured to store jaws which are configured to be attached to a chuck body of a machine tool, a stocker movement mechanism configured to move the stocker between a first position and a second position, and a jaw transferor configured to transfer the jaws to the stocker positioned at the first position from a jaw receiver to receive the jaws, and configured to transfer the jaws to the chuck body from the stocker positioned at the second position. The chuck body is rotatable about a rotation axis.