Double-layered sheet metal; process for its production and use of such double-layered sheet metal

US6063507A · kind A · utility

Assignee

• Thyssen Stahl AG · DE

Inventors

• Klaus Blümel · Dinslaken, DE
• Friedrich Behr
• Klaus Göhler · Grimma, DE
• Christian Hager · Ahaus, DE
• Uwe Kneiphoff · Dinslaken, DE

Key dates

• Filing date: Aug 14, 1998
• Grant date: May 16, 2000
• Expiry date: Aug 14, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12347
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a double-layered sheet metal with a first layer (5) of sheet metal comprising indented knobs (4.sub.I -4.sub.IV ; 4.sub.V -4.sub.VII ; 4.sub.VIII -4.sub.XIII), with several of these knobs forming the corner points of a geometrical segment (8.sub.I, 8.sub.II, 8.sub.III) of the first layer (5) of sheet metal, with a second layer (6) of sheet metal which is connected to the first layer (5) of sheet metal in the area of the tips (4a) of the knobs (4.sub.I -4.sub.IV ; 4.sub.V -4.sub.VII ; 4.sub.VIII -4.sub.XIII), and with a filling (7) made of filling material arranged in the void remaining between the layers (5, 6) of sheet metal. With such a double-layered sheet metal the danger of "total failure" in the case of a load exceeding elastically endured deformation is reduced in that the geometrical segment (8.sub.I, 8.sub.II, 8.sub.III) comprises at least one indentation (10) by means of which any deformation of the double-layered sheet metal caused by a bending load is directed towards the filling (7) in the void. Furthermore, the invention relates to a method for producing such a double-layered sheet metal.