Patent ID: 6722555
Filing Date: 2004-04-20
Classification: B23K

Abstract:
A friction stir welding method, characterized in thatinstalling a friction stir welding use rotary tool to a main shaft in which an axial center thereof directs in a horizontal direction or in a vertical direction, fixing a first member and a second member on a table which opposes to a tip end of said rotary tool; and in a direction in which said first member and said second member are subjected to welding, to position a side of a small diameter portion of an axis center of said rotary tool in a front portion from a side of a large diameter portion of said rotary tool, under a state an axis center of said table is inclined, by rotating said table, moving a portion to be subjected to welding against said rotary tool, and carrying out a friction stir welding to said portion to be subjected to welding.