Patent · US Expired

Device for manufacturing a hollow body from two plates

US6516646B2 · kind B2 · utility

1Cited by

8References

8Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Wilhelm Arns · Paderborn, DE
Arndt Birkert · Bretzfeld, DE
Matthias Schroeder · Badendorf, DE

Key dates

Filing date	Jun 14, 2001
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Jun 14, 2021

Classification

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

Abstract

A device for manufacturing a hollow body from two plates. The device includes an internal high pressure forming tool having an interior surface defining a mold chamber corresponding to a shape of the hollow body. The forming tool being arranged to receive two plates resting against each other. An expansion lance is insertable between the plates via an axial drive, and the expansion lance and the axial drive forming a pushing plunger. The expansion lance has a pinching section along a circumferential contour, and the plates to be pinched are arranged between the pinching section and the forming tool. The expansion lance includes a feed bore communicable with a high pressure fluid source. The expansion lance defines an axial stop to abut axial edges of the plates. The axial stop has a radial periphery which is smaller than that of the mold chamber.

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