Once {HEAD ~ a workpiece} is grabbed by {TAIL ~ the roller} sets 43 it is powered into position on the table 12 of the turret punch 10 or the like 
is grabbed by
Once { HEAD ~ a workpiece } is grabbed by { TAIL ~ the roller } sets 43 it is powered into position on the table 12 of the turret punch 10 or the like
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH