Patent ID: 7584971

Claim:
A workpiece clamping system with a machine spindle and with clamping means for clamping a workpiece, said clamping means being attachable and fixable to said machine spindle, and a bayonet lock for fixing said clamping means through an attachment movement and a rotary movement of said bayonet lock, said bayonet lock being lockable by locking means for release-protected fixing, wherein said bayonet lock has clamping means projections on said clamping means and machine spindle projections on said machine spindle and wherein said projections are provided with contact faces which are inclined to an attachment direction of said clamping means on said machine spindle, wherein said clamping means projections and said machine spindle projections in a fixed state of said workpiece clamping system are in engagement with said contact faces, and wherein, in said fixed state, at least one of said projections is movable in a direction inclined to said contact faces.