WELDING TOOL FOR USE IN DOUBLE-ACTING FRICTION STIR WELDING OR DOUBLE-ACTING FRICTION STIR SPOT WELDING AND WELDING APPARATUS USING THE SAME
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United States of America Patent
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N/A
Issued Date -
Jul 2, 2015
app pub date -
Aug 6, 2013
filing date -
Aug 6, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A double-acting friction stir welding tool according to the present invention at least includes: a columnar pin member; and a shoulder member positioned outside the pin member and having a cylindrical shape, the shoulder member being configured to rotate around an axis, which is the same as an axis of rotation of the pin member. A contact surface and an outer peripheral surface of the pin member, the contact surface coming into contact with a workpiece, have non-affinity for the workpiece. The shoulder member is configured such that an inner peripheral surface and an outer peripheral surface, the inner peripheral surface facing the pin member, have non-affinity for the workpiece, and only a contact surface coming into contact with the workpiece has an affinity for the workpiece. A clearance between the pin member and the shoulder member may be suitably set.
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