Patent · US Expired

Laser beam seam welding with prior laser spot welding

US7312417B2 · kind B2 · utility

3Cited by

5References

6Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Wolfgang Becker · Eppstein, DE
Klaus Goth · Sindelfingen, DE
Mike Paelmer · Weil der Stadt, DE
Thomas Stahs · Ulm, DE
Vladan Todorovic · Nis, RS

Key dates

Filing date	Sep 17, 2004
Grant date	Dec 25, 2007
Priority date	—
Expiry date	Sep 17, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2101/18
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

During welding with high output power, the gaps between the pieces being joined may not exceed a maximal gap width. A process for laser beam welding is provided, which on the one hand ensures maintaining (not exceeding) a maximal gap width between the sheets and on the other hand makes possible a maximal utilization of the achievable welding speed. The sheets, prior to welding, are first spot welded, wherein they are clamped only during this spot welding in order to ensure the maintenance of a maximum gap width.

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