An apparatus for machining {TAIL ~ a workpiece} to {HEAD ~ a predetermined contour} in accordance with a reference pattern comprises a cam mechanism which defines the reference pattern 
An apparatus for machining { TAIL ~ a workpiece } to { HEAD ~ a predetermined contour } in accordance with a reference pattern comprises a cam mechanism which defines the reference pattern
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH