Method for producing low-springback half shells
AssigneeThyssenKrupp Steel Europe AG
InventorsThomas Flehmig, Lothar Hömig, Konstantinos Savvas
Life of this patent
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Abstract
A method for producing low-springback half shells made of a metal, in particular steel or a steel alloy, includes drawing in at least one drawing die a blank, such that the blanks have flange regions on the deep drawn body after the deep drawing. The flange regions are shaped by upsetting a corner substantially perpendicularly to a wall of the deep drawn region of the blank and the flange regions are subsequently trimmed in a shearing die, such that half shells without margins are produced.
Claims9
Method for producing low-springback half shells made of a metal, in which blanks are drawn in at least one drawing die, such that the blanks have flange regions on a deep drawn body after the deep drawing, wherein the flange regions are shaped by upsetting a corner substantially perpendicularly to a wall of the body of the deep drawn blank, and the flange regions are subsequently trimmed in a shearing die, such that half shells without margins are produced;
- wherein a reverse curve is introduced into the flange regions prior to the trimming.
Method for producing closed hollow profiles comprising positioning at least two half shells in such a way that the edges each form a butt joint and welding the half shells to one another along the edges, wherein the at least two half shells are made of a metal, in which blanks are drawn in at least one drawing die, such that the blanks have flange regions on a deep drawn body after the deep drawing, wherein the flange regions are shaped by upsetting a corner substantially perpendicularly to a wall of the body of the deep drawn blank, and the flange regions are subsequently trimmed in a shearing die, such that the at least two half shells without margins are produced.
Dependencies are inferred from the claim text.