before processing the plate workpiece in the region of {TAIL ~ the formed shape}, securing {HEAD ~ the selected tool punch} to the tool punch holder, and securing the selected tool die to the tool die holder 
before processing the plate workpiece in the region of { TAIL ~ the formed shape } , securing { HEAD ~ the selected tool punch } to the tool punch holder , and securing the selected tool die to the tool die holder
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH