Friction stir welding method and friction stir welding device
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsYuzo Kano, Mitsuo Fujimoto
Life of this patent
Estimating the term…
Abstract
A welding tool is inserted into an object in a rotation-stopped state, and the welding tool is rotated after insertion, thereby the object is stirred by frictional heat. The welding tool is inserted into the object free of whirling. The welding tool can be prevented from inserting in a position shifted from the target welding position. Namely, the welding tool is precisely inserted in the target welding position and members of the object can be welded in the target welding position free of shifting.
Claims10
A friction stir welding method of welding an object composed of a plurality of members to be welded by stirring the object in a solid phase using a welding tool, comprising:
- an insertion step of moving the welding tool in a reference direction coinciding with an axis of the welding tool in a rotation-stopped state so as to insert the welding tool into the object;
- and
- a stirring step of rotating the welding tool about the axis of the welding tool after the insertion step so as to stir the object in a solid phase by frictional heat between the welding tool and the object, thereby welding the members.
A friction stir welding device for welding an object composed of a plurality of members to be welded by stirring the object in a solid phase using a welding tool, comprising:
- a tool holding part configured to hold the welding tool, the tool holding part being installed rotatably about a predetermined reference axis;
- rotation driving means for rotating the tool holding part about the reference axis;
- movement driving means for moving the tool holding part in the reference axis;
- insertion decision means for deciding that the welding tool is inserted into the object to be welded;
- and
- control means for controlling the rotation driving means and the movement driving means so as to move the welding tool in a rotation-stopped state in the reference axis coinciding with an axis of the welding tool, and when the welding tool is judged to be inserted into the object to be welded based on a decision of the insertion decision means, rotate the welding tool about the axis.
Dependencies are inferred from the claim text.