FIELD: plastic working of metals.
SUBSTANCE: method comprises steps of preliminarily bending strip for forming radius portions between members of blank and finally bending strip by applying normal and tangential efforts to blank members. At preliminarily bending strip its central portion is bent and simultaneously concave cylindrical shape is imparted to members of strip central portion at maximum camber consisting 0.5 - 0.6 of initial thickness of strip. Final bending is realized after applying normal efforts to peripheral portions of blank for further straightening concave portions of blank.
EFFECT: enhanced quality of W-shaped parts due to elimination of thinning them in radius portions.
8 dwg, 1 ex
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