Patent · US Active

Method for producing low-springback half shells

US8296922B2 · kind B2 · utility

2Cited by

10References

9Claims

0Family size

Assignee

ThyssenKrupp Steel Europe AG · DE

Inventors

Thomas Flehmig · Ratingen, DE
Lothar Hömig · Voerde, DE
Konstantinos Savvas · Mülheim an der Ruhr, DE

Key dates

Filing date	Apr 23, 2007
Grant date	Oct 30, 2012
Priority date	—
Expiry date	Apr 30, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1241
WIPO fieldMachine tools
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.