MULTI-SHOULDERED FIXED BOBBIN TOOLS FOR SIMULTANEOUS FRICTION STIR WELDING OF MULTIPLE PARALLEL WALLS BETWEEN PARTS

摘要

A tool for making simultaneously a plurality of parallel friction stir welds includes at least one shank for holding in a chuck or collet of a friction stir welding machine, a plurality of friction stir welding pins, and frictio n stir welding shoulders including at least four working surfaces adjacent sai d ins, the shoulders and pins mounted in axial relationship; dimensions of sai d friction stir welding pins and shanks corresponding to dimensions and spacin gs of said friction stir welds.