Abstract: The disclosure relates to a tool changer which is disposed at a workpiece exchanger for machine tools. The workpiece exchanger is intended for automatic exchange of workpieces intended for fixedly clamping between the tailstock and/or chuck and comprises a carriage drivable in the longitudinal direction of the lathe, a slide vertically movable along the carriage, and a gripping device disposed on the slide. The gripping device is rotatable about a horizontal axis and has first and second jaw pairs which are horizontally shiftable parallel to and disposed on opposite sides of the above-mentioned axis.The tool changer according to the invention includes a pair of gripping means disposed on each jaw pair, the gripping devices of the gripping means being movable with the jaws for the purposes of tool change.

Abstract: A work changing mechanism for machine tools, especially lathes, designed for automatic change of works to be clamped by centers or chucks comprising a shuttle car movable in the direction of the spindle axis of the lathe, a slide vertically movable along the shuttle car and rotatably arranged on the slide and about a horizontal shaft extending transversely to the spindle axis is a gripping mechanism including two pairs of jaws which are horizontally displaceable parallel to the shaft on opposite sides thereof. The first jaw pair is adapted to feed work into the machine tool and the second pair to remove machined work from the machine tool. Loading and removing work pieces may be rapidly achieved because the work changing mechanism is controlled by computer.