Patent · US Active

Process for checking a laser weld seam

US7620233B2 · kind B2 · utility

4Cited by

17References

17Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Markus Beck · Scotts Valley, US
Thomas Herzinger · Ulm, DE

Key dates

Filing date	Jan 7, 2005
Grant date	Nov 17, 2009
Priority date	—
Expiry date	Aug 18, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30152
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

When laser beam welding one or more work pieces faults may occur, which lead to unacceptable losses in quality. A check process is provided, which reliably recognizes seam faults in a seam which is introduced into one or more workpieces by means of laser beam welding. Characteristic signals are detected from the region of the seam using a sensor and compared with an index value or set value, and only signals are taken into consideration which are detected in a characteristic time interval following the laser beam welding, which begins, at the earliest, following the solidification of the seam.

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