ADAPTIVE CONTROL OF ARC WELDING PARAMETERS
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United States of America Patent
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app pub date -
Dec 31, 2009
filing date -
Dec 31, 2009
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Abandoned
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Abstract
A laser sensor to scan the weld joint either before welding begins as a pre-weld scanning operation or in real time during welding to provide adaptive control of the arc welding parameters. A “line” type laser sensor device projects a laser line within a fixed operating window. The line laser produces a reflective position of anything that the laser line “sees” within the operating window. By triangulation, the exact distance an object is from the laser can be measured at any point along the “line” of the laser. Certain parts of the weld bevel are targeted for measurement. The measurements are stored in an electronic storage medium and a data processor. The stored measurements and data processor are used in conjunction with automated welding equipment to adjust the welding parameters as required. Because the exact joint/weld geometry is then known for every portion of the weld, the welding equipment can then respond or “adapt” to variations in the weld joint between the work pieces.
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