Web seam for sheet-metal parts and method for producing the same

US4470717A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Ulrich Bruhnke · Ehningen, DE
• Bernd Harloff · Böblingen, DE
• Roman Sch/o/ ppel · Sindelfingen, DE
• Engelbert Kinds · Ehningen, DE

Key dates

• Filing date: Jul 25, 1983
• Grant date: Sep 11, 1984
• Expiry date: Jul 25, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K33/008
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A web seam for sheet metal parts and a process for producing the same wherein the web seam is provided with a triple layer web projecting from a surface of the sheet metal parts, the layers are formed from a first flange of one sheet metal part and a second flange of the other sheet metal part. The first flange and a portion of the second flange immediately adjoining the other sheet metal part are separately connected by spot welds or by cementing in an intermediate step. The projecting edge of the second flange is then folded over in a U-shape and extends over the first flange. Additional weld spots or cement are applied to the web seam, which weld spots or cement simultaneously cover all three layers. A bight portion joining the first leg and a second leg of the U-shaped flange has a bending diameter which is larger than a single thickness of the sheet metal and, preferably, is twice the sheet metal thickness.