Patent · US Expired

High-pressure deformation of two plates into hollow workpiece

US6341515B2 · kind B2 · utility

3Cited by

8References

8Claims

0Family size

Assignee

Schuler Hydroforming GmbH & Co. KG · DE

Inventors

Ralf Huber · Brigachtal, DE
Bernd Engel · Stuttgart, DE
Matthias Prier · Wilnsdorf, DE

Key dates

Filing date	Mar 29, 2001
Grant date	Jan 29, 2002
Priority date	—
Expiry date	Mar 29, 2021

Classification

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

Abstract

An apparatus for forming two plates into a hollow workpiece has a pair of dies having edge regions adapted to be pressed together against outer peripheries of the plates. An outer element in the edge region of one of the dies is adapted to rotate therein about an axis generally parallel to the direction and an inner element set in the outer element is rotatable therein about an axis generally parallel to and offset from the outer-element axis. The inner element is formed offset from its axis with an axially throughgoing feed passage aligned with a feed hole in the plate engaging the one die. A fluid forced under pressure through the passage and hole into a space between the plates deforms the plates away from each other in the direction while displacing the hole perpendicular to the direction with movement of the passage perpendicular to the direction.

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