Cylindrical laser welder

Details Cylindrical laser welder Cylindrical laser welder

1986-05-15

1987-04-14

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LP, 219121LQ, B23K 2600

Patent

active

046581090

ABSTRACT:
A laser welder is provided that generates output energy focused in a circr or cylindrical shape for simultaneously welding around a 360.degree. circumference without unnecessarily heating large amounts of material. The welder may be used to fasten cylindrical shaped objects, gears and shafts together, which is difficult to do by conventional means. The welder may also be used to fasten one cylinder to another.
To accomplish the welding, a laser has an unstable optical cavity arranged with its feedback mirror centered to generate a circular output beam having an obscuration in the center. A circularly-symmetric, off-axis concave mirror focuses the output beam onto the objects being fastened and away from the center line or axis of the circular beam.

REFERENCES:
patent: 3622907 (1971-11-01), Tomlinson et al.
patent: 3681709 (1972-08-01), Brown
patent: 3943324 (1976-03-01), Haggerty
patent: 4215263 (1980-07-01), Grey et al.
patent: 4547650 (1985-10-01), Arditty et al.
patent: 4580270 (1986-04-01), Johnson et al.

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