The technology of robot friction stir welding with high welding flexibility, featured as green manufacturing and intellectualization, has been widely noticed and used in industrial production. In this paper, to broaden the scope of robotic friction stir welding, with the concern on reducing the axial force of friction stir welding process, some technical methods with low axial force and being applicable to the robotic friction stir welding are summarized. Moreover, the friction stir welding processes, which can further reduced the axial force, are analyzed, and the development prospects of robotic friction stir welding are proposed.
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