FIELD: plastic working of metals, namely cold flash free heading of fastening parts.
SUBSTANCE: method comprises steps of preliminary and finish shaping of cylindrical portions, cylindrical flange and polyhedron in three shaping positions. In first position at first truncated guiding cone is preliminarily shaped on one end. In second position rod is headed for forming cylindrical flange between cylindrical portions of blanks and truncated guiding cone is finally shaped. In third position hexahedron is reduced at side of truncated guiding cone while remaining before flange cylindrical portion with diameter formed in previous position. At other side rod for knurling thread is reduced.
EFFECT: enhanced strength of shaping tool, improved quality of ready products.
1 dwg
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