一种用于处理具有一个圆形扁平工件机，特别是圆形，通过切削外轮廓可释放地保持在坐标台上的工件提供有夹紧设备。 这些夹紧装置被设计以特殊的方式，并且被布置：在所述坐标表的（3）延伸通过所述中心穿过对称（S）对齐中央夹紧装置（4）的工件（5）轴一个夹紧导轨的x方向上的（7）延伸 沿着固定的夹紧元件（37，38）的对称轴移动。 在此中央夹持装置的两侧（7）是在横向的夹紧装置（10）上的夹紧导轨可滑动地设置每种情况下。 每个横向夹紧装置（10），围绕至少一个垂直于工件平面的相关联的横向夹持装置上（平行于z轴）枢转轴线（21）延伸（10）的工件（A 5的夹紧元件（12，33，57） ）和所述切割装置（L）释放在夹紧位置，并且反之亦然枢转检测到受支持的工件释放位置（31）的移动范围。

A machine for processing flat workpieces with a round, in particular circular, external contour by cutting has a workpiece in the x- and y-direction traversing controlled coordinate table and essentially acting in the z-direction cutter, in particular a laser cutter, and is provided with clamping devices for releasably holding the workpiece on the coordinate table. These clamping devices are gestaitet and arranged in a special way: At the extending in the x-direction of the clamping rail (3) of the coordinate table is referred to by the Mittelupnkt (4) of the workpiece (5) axis of symmetry (S) aligned middle clamping device (7) along with the axis of symmetry displaceable clamping elements (37, 38) fastened. On both sides of this central clamping device (7) has a lateral clamp (10) on the clamping rail is slidably disposed in each case. The clamping elements (12, 33, 57) of each lateral clamping device (10) and around at least one perpendicular to the workpiece plane (parallel to the z-axis) extending pivot axis (21) on the associated lateral clamping device (10) from a workpiece (5) the range of movement of the cutting device (L) releasing release position (31) mounted in a workpiece detected clamping position and vice versa pivotally.