MECHANICAL SYSTEM FOR AUTOMATIC GUIDING OF ONE OR MORE TORCHES OF A WELDING UNIT WITH THREE PIVOTING AXES FOR THE TORCH OR TORCHES

摘要

A mechanical system for automatic guiding of one or more torches of a welding unit in a groove delimited by chamfered end surfaces of two metal parts to be welded together, including a main carriage moving along a stationary guide relatively parallel to the groove, a secondary carriage that is connected to the main carriage by a hinged linking assembly and that includes a torch supporting unit and a guiding device including bearing members in contact with the surfaces of the metal parts bordering the groove and sensing members that enter the groove. The hinged linking assembly includes three pivoting axis.