Patent · US Active

Method and device for the coreless forming of hollow profiles

US8959973B2 · kind B2 · utility

2Cited by

4References

10Claims

0Family size

Assignee

Thyssenkrupp Steel AG · DE

Inventors

Torsten Bröβke · Duisburg, DE
Michael Brüggenbrock · Rosendahl, DE
Thomas Flehmig · Ratingen, DE
Mohamed Tohfa · Duisburg, DE

Key dates

Filing date	Nov 16, 2006
Grant date	Feb 24, 2015
Priority date	—
Expiry date	Oct 5, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49805
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for the production of a hollow section from a blank, wherein the blank is introduced between two coreless halves of a die which have a desired section shape and can be displaced relative to one another and the blank is formed into a slotted hollow section by a closing movement of the halves of the die, includes preventing edges of the blank from sliding ahead during the closing movement of the die. A device for the production of hollow sections, which device has two coreless halves of a die which are positioned displaceably relative to one another and optionally a base plate, the halves of the die having the desired section shape of the hollow section which is to be formed includes means which, when the coreless halves are closing, prevent edges of a blank from sliding ahead to produce a slotted hollow section.

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