Laser welding using mobile robots: an approach for the efficient processing of large components

This article investigates the use of mobile robot systems for laser welding, focusing on the efficient processing of large components. In contrast to stationary welding systems, mobile robots offer greater scalability as they can move seamlessly over the workpiece, regardless of its size. This enables resource-saving and therefore sustainable production of large components. The study focuses on the prototype of a mobile robot equipped with a welding gap sensor and swiveling laser welding optics to overcome the challenges of seam tracking, precision and adaptability. Experimental results on stainless steel components show that high-quality weld seams can be achieved, while irregularities due to positioning errors cannot be ruled out. The main results underline the potential of mobile robots to improve scalability and resource efficiency in laser welding applications. Future work will center on improving sensor technology, positioning accuracy and compensating for inaccuracies caused by laser welding optics.