| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction point-joining method and its device for performing the friction point-joining of at least three stacked metal plate members using a rotary tool in which the friction point-joining of consistent quality is performed by inputting the friction heat to the metal plate members step by step. SOLUTION: A projecting part 11 on the tip, a first shoulder part 12 having the diameter larger than that of the projecting part 11, and a second shoulder part 13 having the diameter larger than that of the first shoulder part 12 and relatively movable in the direction of the axis of rotation are provided on a rotary tool 10. Metal plate members W1, W2, W3 are received by a receiving tool 20 arranged opposite to the rotary tool 10, and pressed by the rotating rotary tool 10 to push the projecting part 11 and the first shoulder part 12. When the projecting part 11 reaches an area of the third metal plate member W3, the second shoulder part 13 is relatively moved, the first metal plate member W1 is pressed, joining parts of the metal plate members W1, W2, W3 are softened by the frictional heat, and subjected to plastic flow to perform the joining. COPYRIGHT: (C)2006,JPO&NCIPI
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