FIELD: plastic working of metals, namely shaping blanks in rollers, possibly manufacture of bent channel shapes of coated materials in continuous and piece production processes.
SUBSTANCE: method comprises steps of folding and bending members of shape for further straightening them; at first two transitions imparting to blank cup-shaped contour in its cross section with maximum curvature in zones of future bent portions and zero curvature in its center and in end portions; at next transitions bending under peripheral members for further gradually straightening them and bottom of shape; at final transition sizing shape while setting radius values of bent zones for each transition according to given formula.
EFFECT: improved quality of shapes, lowered number of transitions.
1 dwg, 2 ex
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| METHOD TO PRODUCE BENT SHAPES OF ROLLING | 1993 |
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RU2039620C1 |
