| 摘要 |
PROBLEM TO BE SOLVED: To obtain a joining portion exhibiting an excellent outer appearance with less burr, and a high joining speed and achieving excellent joining strength. SOLUTION: A joining device linearly moves a rotating joining tool 20 while bringing a tool surface 22 of the joining tool 20 in a state that it is pressed into a press-fitting region including an abutting portion 54 on the surface of metallic members 12, 14 by a predetermined pressing amount. In this way, frictional heat is generated between the tool surface 22 and the press-fitting region and the vicinity of the abutting portion 54 is heated and a plastic flow of the metallic material which is in a high temperature is generated in the vicinity of the abutting portion 54 by the frictional force from the rotating and vibrating tool surface 22. At this time, since the plastic flow of the metallic material can be generated along the amplitude direction crossing the abutting portion 54, sufficient circulation (kneading) in metallic materials is generated between the metallic members 12, 14. COPYRIGHT: (C)2010,JPO&INPIT
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