Patent ID: 7134950

Claim:
In combination with a machining tool having an annular machining edge, a center clamp comprising: a C-shaped body having an inner body end inside the machining edge and an outer body end outside the machining edge and spaced along an axis extending across the machining edge; a push rod extending along the axis through the outer body end and having an end face outside the machining edge; a rotary joint centered on the axis and having inside the machining edge an inner part on the inner body end and an outer part on the inner part between the inner part and the push rod and rotatable on the inner part about the axis; axial actuating means for relatively axially shifting the body and the push rod and thereby clamping a workpiece between the end face of the rod and the outer part of the joint; and angular actuating means for pivoting the push rod about the axis and thereby, when the workpiece is clamped between the rod and the joint, pivoting the workpiece about the axis.