Patent · US Active

Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device

US9327332B2 · kind B2 · utility

1Cited by

3References

5Claims

0Family size

Assignee

ThyssenKrupp Steel Europe AG · DE

Inventors

Thomas Flehmig · Ratingen, DE
Klaus Göhler · Grimma, DE
Konstantinos Savvas · Mülheim an der Ruhr, DE

Key dates

Filing date	Mar 31, 2009
Grant date	May 3, 2016
Priority date	—
Expiry date	Dec 2, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21D24/04
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The aim of the invention is to provide a method for controlling the flow of material when deep-drawing a workpiece, which better utilizes the drawing capacity of a workpiece and produces a better shape accuracy, particularly of the bottom of the drawn part. The aim is achieved by a method in which the deep-drawing process is performed incrementally and in which at least one bead is incorporated into the flange region of the workpiece prior to each increment of the deep-drawing process. Due to this, the shape accuracy of the bottom can be improved and material accumulations in the flange zone can be prevented.

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