Method and apparatus for forming blanks

US6308545A · kind A · utility

Assignee

• KUKA Werkzeugbau Schwarzenberg GmbH · DE

Inventors

• Lonka Bürgel · Fischbachau, DE
• Frank Schieck · Lauter, DE

Key dates

• Filing date: Dec 27, 1999
• Grant date: Oct 30, 2001
• Expiry date: Dec 27, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49805
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

For shaping small radii in edge and corner regions of preformed workpieces or blanks, the invention provides for a postforming of exclusively said edge and corner regions by high liquid pressure. For performing the method an apparatus has a die part (forming insert) with expansion spaces constructed in its edge and corner regions.