Workpiece holder device for fixing a board-shaped workpiece, in particular a metal sheet to a workpiece movement unit of a machine tool

摘要

The device (8) has two workpiece clamping elements (13, 17), and a tensioning drive (31) by which the workpiece clamping elements are moved toward each other from an output relative position to clamp a workpiece arranged between the workpiece clamping elements. An adjusting part (51) i.e. actuator (52), is provided to adjust the output relative position of the workpiece clamping elements. The output relative position of the workpiece clamping elements is adjusted such that the workpiece clamping elements rest in the output relative position at the workpiece with a prestressing force.