| 摘要 |
There is provided a friction stir spot joining device in which a pin (1) can be simply and surely caused to come in or come out from a tip end of the joining tool (2) by driving a pin extraction motor (5) when the pin extraction motor (5) is used so as to cause the pin (1) to come in or come out from the tip end of the joining tool (2). The friction stir spot joining device for softening and stirring works to be joined due to frictional heat generated by rotation of the pin (1) so as to perform spot joining, and provided with a stirring motor (3) for rotating the joining tool (2) having the pin (1), and a pressure application motor (4) for linearly driving the joining tool (2), said friction stir spot joining device further comprises the pin extraction motor (5) which is disposed at the rear of a stirring motor (3) on the same axis line as the stirring motor (3) while integrated with the stirring motor (3). |
