| 摘要 |
A friction-stir welding tool provided with: an axially extending front-side shoulder (6); a reverse-side shoulder (5) in contact with plate materials so as to sandwich the abutment portion of the the plate material pair; and a probe (7) disposed so as to penetrate the plate materials between the front-side shoulder (6) and the reverse-side shoulder (5), the probe (7) linking the front-side shoulder (6) and the reverse-side shoulder (5) to each other; wherein the probe (7) has a first screw part (8) provided on at least one axial end section, and the front-side shoulder (6) and/or the reverse-side shoulder (5) has a second screw pan (11) in threaded engagement with the first screw part (8), the threaded engagement changing so that the reverse-side shoulder (5) and the front-side shoulder (6) approach each other along the axial direction as the front-side shoulder (6) and the reverse-side shoulder (5) rotate relat-ive to each other, the threaded engagement with the first screw part linking the reverse-side shoulder (5) and/or the front-side shoulder (6) with the probe. |
