Patent · US Active

Method and device for producing highly dimensionally accurate flanged half shells

US8522593B2 · kind B2 · utility

7Cited by

19References

9Claims

0Family size

Assignee

ThyssenKrupp Steel Europe AG · DE

Inventors

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

Key dates

Filing date	Nov 24, 2009
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Dec 14, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21D22/21
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for producing highly dimensionally accurate, deep-drawn half shells with a base region, a body region and a flange region, includes firstly forming a pre-formed half shell from a blank and then shaping the pre-formed half shell into a finally formed half shell, wherein the pre-formed half shell has excess blank material due to its geometric shape and wherein, owing to the excess material during the shaping of the pre-formed half shell into its final shape the half shell is compressed into the finally formed half shell by at least one further pressing process. The method requires that the pre-formed half shell has excess blank material in a transition region between the body region and flange region.

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