Improving coaxial measurements in laser welding by correcting distortions of a laser focus lens with a wide field of view

摘要: A compact, lightweight, and multifunctional head for robotic laser welding applications has been equipped with a camera to provide real time image stream of the work piece seam teaching, tracking, inspection purposes [D. Iakovou, R. G. K. M. Aarts, J. Meijer, “Integrated sensors welding,” in Proceedings Third International WLT Conference on Lasers Manufacturing, Munich, Germany (AT-Fachverlag GmBH, Stuttgart, 2005), pp. 121–126; D. Meijer “Sensor integration processes,” (paper No. 2301), Congress Applications Electro-Optics (ICALEO), Miami, 2005 (unpublished)]. The uses part focusing optics. Research done identify correct positioning errors introduced by optical system. robust lens calibration method developed. Calibration detection experiments have performed results were used tracking