Patent · US Expired

Method and device for producing curved extruded profiles

US6634200B2 · kind B2 · utility

4Cited by

7References

20Claims

0Family size

Assignee

WKW Erbsloeh Automotive GmbH · DE

Inventors

Matthias Kleiner · Mannheim, DE
Dieter Arendes · Hildesheim, DE
Alexander Klaus · Wuppertal, DE

Key dates

Filing date	Nov 6, 2001
Grant date	Oct 21, 2003
Priority date	—
Expiry date	Nov 6, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C25/02
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In a method for producing curved work pieces, an extruded profile leaves the die of an extruder in the strand discharge direction and is then bent into a curved shape by external forces. The extruded profile that leaves the die, before being bent, is deflected so that the strand discharge direction extends forwards at an angle counter to the eventual curvature of the work piece. To this end, the die comprises a tool holder in whose receiving opening an extrusion tool package consisting of a die with or without a mandrel and a cover part is disposed. The guide surfaces of the die and/or of the mandrel that produce the discharged strand are designed or disposed to be at an angle with respect to the strand discharge direction which extends at an incline with respect to the center axis of the die counter to the eventual curvature of the work piece.

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