METHOD OF AND SYSTEM FOR WELDING USING AN ENERGY BEAM SCANNED REPEATIVELY IN TWO DIMENSIONS

摘要

A method of establishing a weld joint comprises the step of projecting an energy beam (2) such as a laser beam onto an interface area (103) between two parts (101, 102) to be joined. The beam (2) is projected onto the interface area (103) so as to produce a primary spot on the interface area (103), and the beam (2) is repetitively scanned in two dimensions in accordance with a scanning pattern so as to establish an effective spot (21) on the object (101, 102). The effective spot (21) having a two-dimensional energy distribution. The effective spot (21) is displaced along a track (104) over the interface area (103) so as to progressively melt mating portions of the first part (101) and the second part (102) so as to form the weld joint (105). The effective spot (21) features a two-dimensional energy distribution.