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