Method and device for displaying and monitoring the profile of a weld bead inside a groove provided between two metal workpieces
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jun 4, 2009
app pub date -
Nov 4, 2008
filing date -
Nov 6, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method of displaying and monitoring the profile of a weld bead (4), in which, placed inside the groove, there is an assembly (10) comprising, facing one another, an image acquisition means (11), a light source (12), the beam of which is directed towards said image acquisition means, and, between the image acquisition means and the light source, a mask (13); the optical axis of the image acquisition means (11) is oriented so as to be approximately parallel to the sidewalls (5, 6) of the groove (3); a light beam produced by the light source (12) is directed towards the mask (13) and the image acquisition means (11); a central shadow zone and a peripheral halo are formed by means of the light beam and the mask (13), said halo illuminating, approximately perpendicularly, the weld bead (4) and the sidewalls (5, 6); the profile of the weld bead (4) and the sidewalls (5, 6) are displayed on a display/monitoring means; and said assembly (10) is moved inside the groove (3) longitudinally and parallel to the sidewalls (5, 6).
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