Electric heating – Metal heating – By arc
Patent
1986-10-30
1987-10-06
Paschall, M. H.
Electric heating
Metal heating
By arc
219121LC, 219121LU, 901 42, B23K 2600
Patent
active
046984798
ABSTRACT:
A beam delivery system for delivering a laser beam from a stationary laser to a point in space under robot control has a universal or spherical shoulder joint which is free to rotate in any direction, a wrist joint which receives the beam from the shoulder joint and which allows the beam to be pointed in the required direction and a section of sliding tubes which couple the wrist joint directly to the shoulder joint in a straight line. The beam delivery system is constructed to be readily and effectively associated with a robot. The beam delivery system is mounted with the spherical or universal shoulder joint close to the vertical axis of the robot shoulder and with the spherical shoulder joint below the articulated arm mechanism of the robot so that the beam delivery system accesses a maximum volume beneath the articulated mechanism of the robot. The beam delivery system utilizes a minimum of internal mirrors to minimize power loss in the beam. The mirrors are close coupled and precision mounted in both the shoulder joint and the wrist joint to enable the beam to be transmitted in a long throw from the shoulder joint to the wrist joint through the telescoping tubes by a mechanism which minimizes the effect of inertial forces on the beam delivery system. The mirrors in the joints are front mounted and those in the shoulder joint may be adjustable so the mirrors can be easily positioned during initial set up and can also be readjusted or replaced, if necessary, during operation without the necessity to recalibrate the beam delivery system.
REFERENCES:
patent: 4174154 (1979-11-01), Kawasaki
patent: 4287459 (1981-09-01), Dahlstrom
patent: 4350379 (1982-09-01), Peroutky
patent: 4542278 (1985-09-01), Taylor
patent: 4623229 (1986-11-01), Galan
LF Staff Report, "Applications in Automaking", Laser Focus, Feb. 1975, pp. 11-12.
Yessik et al., "Laser Processing at Ford", Metal Progress, May 1975, pp. 210-215.
Vasilash, "At Coherent; Advanced Lasers and New Ideas in Robotics", Manufacturing Engineer, Mar. 1981, pp. 84-85.
Jones Henry W.
Rando Joseph F.
Davis Paul
Feix Donald C.
Freiburger T. M.
Paschall M. H.
Spectra-Physics Inc.
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