of this frame are clamping jaws 28 which firmly clamp the workpiece 6 between them on the other side the frame 27 is connected to a drive shaft 29 which connects the frame 27 and consequently the clamping device 3 to the driving device 4 the receiving device 5 on which the workpiece 6 rests during working is guided by means of slide elements 30 31 on guide rails 32 33 the slide elements 30 31 and the guide rails 32 33 together form the guiding device 34 the slide elements 30 31 can be fixed re releasably in a desired position with respect to the guide rails 32 33 arranged on the slide elements 30 31 are two transverse struts 35 36 in which an element 37 is telescopically mounted respectively at the end arranged around the element 37 are springs 38 which bring about additional resilience arranged on each element 37 is a plate 39 on which in turn an element 40 for receiving and mounting rollers 41 42 is fastened the elements 37 with the springs 38 allow a movement of the rollers 41 42 in the x direction represented furthermore the rollers 41 42 can be made to move along the guide rails 32 33 in a z direction by means of the slide elements 30 31 likewise assigned to the receiving device 5 is a catching device 55 which serves for receiving a sawn through workpiece the catching device 55 is fastened in the interior of the workpiece 6 by means of fixing elements 56.