Process for manufacturing large area sheet metal parts, in particular a body component for a vehicle

US6675620B1 · kind B1 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Rolf Heyll · Renningen, DE
• Robert Koehr · Neustadt, DE

Key dates

• Filing date: Nov 6, 2000
• Grant date: Jan 13, 2004
• Expiry date: Jul 17, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21D26/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A process for the manufacture of a large area sheet metal part, in particular a body component for a vehicle, from a flat blank, provides that one sided pressurization with an active medium in a forming tool gives the flat blank a prestretched preform, and that then the preform, removed from the forming tool, is formed into the final shape in a separate deep drawing tool.