Next, at the end of the backward stroke of the first ram, the forming punch together with {TAIL ~ the pressure pad} is lowered to form {HEAD ~ a bulge} on a head portion of the coupling element 
Next , at the end of the backward stroke of the first ram , the forming punch together with { TAIL ~ the pressure pad } is lowered to form { HEAD ~ a bulge } on a head portion of the coupling element
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH