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Method and arrangement for optical inspection of a weld seam

  • US 5,978,090 A
  • Filed: 09/30/1997
  • Issued: 11/02/1999
  • Est. Priority Date: 10/10/1996
  • Status: Expired due to Term
First Claim
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1. A method of inspecting a stepped weld seam formed by the welding together of sheet-metal blanks of uneven thickness along a common edge, comprising the steps of:

  • projecting at least one line of light to extend transversely across said weld seam;

    taking a first view of said weld seam and said projected light by means of a camera viewing said seam approximately perpendicularly to the plane of said blanks;

    taking a second view of said weld seam and said projected light by means of a camera viewing said seam from the side and facing towards the thicker of said blanks; and

    evaluating said first and second views of said seam.

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