| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control technology which can actualize excellent joining quality with a suitable accuracy according to a joining condition, particularly in a double acting type friction stir spot welding method. <P>SOLUTION: A tool drive unit 53 is configured to move a pin member 11 and a shoulder member 12 each forward and backward, and is controlled by a tool drive control unit 21. A press-fit reference point setting unit 22 sets a position of the pin member 11 or the shoulder member 12 when contacting a joined object 60 as a press fitting reference point, the tool drive control unit 21 controls the press-fit depth when a rotating tool 51 press-fits the joined object 60 from the surface thereof, by controlling the relative position of the pin member 11 to the shoulder member 12, based on the press-fit reference point. <P>COPYRIGHT: (C)2013,JPO&INPIT |
