Metal fusion bonding – Including means to provide heat by friction between...
Patent
1996-05-31
1998-08-18
Heinrich, Samuel M.
Metal fusion bonding
Including means to provide heat by friction between...
228 13, 407 34, 407 53, 29566, B23K 2012
Patent
active
057948356
ABSTRACT:
An improvement to a friction stir welding tool having a rotating member, the improvement including an attachable cutting tool (30) having one or more radial cutting edges (32). A first embodiment of a cutting tool including one or more cutting inserts (42), each cutting insert having a lower end cutting edge; a like number of insert-engaging grooves (44); a collar (46) sized to closely engage around the rotating member with engaged inserts; a collar attachment arrangement for securing the collar (46) to the rotating member (38); and a number of set screws (48) for anchoring the cutting inserts (42) to the member (38). A second embodiment of a cutting tool including a cutting insert holder (60) having a lower end cutting edge; an insert holder hole (62) extending through the rotating member, the insert holder hole oriented angularly away from the rotating member axis of rotation (64); a threaded radial hole (66) formed in the rotating member (38); and a single screw fastener (68) for turning into the radial hole to press against the cutting insert holder. A third embodiment of a cutting tool including one or more tabs (80) extending radially from the rotating member (38). A cornered cutting insert (70) is removably attached to the lower end of each tab. The cornered cutting insert (70) includes one or more corners (72) to act as cutting edges. Additionally provided is an improved method of friction stir welding including attaching a cutting tool having a cutting edge to a conventional friction stir welding tool and providing liquid to the cutting edge as the weld is being formed in order to quickly cool the cutting edge surfaces so that the material will not adhere to the cutting edges, allowing the cutting tool to machine excess weld material away.
REFERENCES:
patent: 2219907 (1940-10-01), Ross
patent: 3228267 (1966-01-01), Hebert
patent: 3550229 (1970-12-01), Zenses
patent: 4103138 (1978-07-01), Moriki
patent: 5460317 (1995-10-01), Thomas et al.
Abstracts and Exemplary Claims of U.S. Patents, pp. 6-14, for: Patent No. 5,469,617; Patent No. 5,460,317, Patent No. 5,262,123, Patent No. 4,811,887, Patent No. 4,605,151, Patent No. 3,460,235, Patent No. 5,170,031, Patent No. 4,959,241.
Avila Steven J.
Colligan Kevin J.
Heinrich Samuel M.
The Boeing Company
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