This Master's Thesis deals with the study and development of a laser welding robotic cell, carried out at SM System S.r.l. The goal of the project was to design a robotic cell able to perform laser welding on small-to-medium quantities of different products; fexibility and reliability were the main objectives. In order to achieve the required performances, each subsystem of the cell was designed on the basis of the state of the art: laser welding technologies were investigated for finding the most suitable welding laser for the application; visual servoing algorithms were introduced to increase flexibility in following different seam trajectories; seam-teaching and seam-tracking concepts were extracted from the literature and applied to the concrete case; robot modeling was performed and simulations were carried out to test the robustness of the system.