Patent ID: 7261024

Claim:
A device ( 10 ; 110 ) for clamping a workpiece ( 50 , 50 a , 50 b , 50 c 50 d ; 150 d ) on a rotatably drivable longitudinal axis having: a tensioning spindle ( 12 ; 112 ) a counter-holder ( 14 ; 114 ) and a carrier, at least the tensioning spindle ( 12 ; 112 ) being mounted such that it is rotatable about the longitudinal axis (A), and the carrier being fixed to the tensioning spindle ( 12 ; 112 ) and, when the workpiece ( 50 , 50 a , 50 b , 50 c , 50 d ; 150 d ) is clamped between the tensioning spindle ( 12 ; 112 ) and the counter-holder ( 14 ; 114 ), being capable of being brought into engagement with the workpiece ( 50 , 50 a , 50 b , 50 c , 50 d ; 150 d ) in such a way that it transmits a rotary movement of the tensioning spindle ( 12 ; 112 ) to the workpiece ( 50 , 50 a , 50 b , 50 c , 50 d ; 150 d ), the carrier having a spring element ( 30 ; 130 ), characterised by an adapter element ( 58 ; 158 ) which is constructed to be fixed to the workpiece ( 50 , 50 a , 50 b , 50 c , 50 d ; 150 d ) and which cooperates with the tensioning spindle ( 12 ; 112 ) to clamp the workpiece ( 50 , 50 a , 50 b , 50 c , 50 d ; 150 d ), the spring element ( 30 ; 130 ) acting on the adapter element ( 58 , 58 a , 58 b , 58 c , 58 d ; 158 d ) under prestress to transmit a torque or being capable of being brought into engagement with said adapter element.