Welding torch with vision attachment

Details Welding torch with vision attachment Welding torch with vision attachment

1982-07-26

1984-05-22

Shaw, C. C.

Electric heating

Metal heating

By arc

21913001, 21913021, B23K 910

Patent

active

044503393

ABSTRACT:
A gas tungsten arc welding torch suitable for robotic welding has an improved built-in optical vision sensor which images the weld puddle and weld region on the face of a fiber optic cable; the image is relayed to a video camera and computer to control the torch motion and weld process. The electric arc is much brighter than the area around the arc it is desired to image. A shaped blocking device on the tungsten electrode, such as a molybdenum sleeve or collet set back so that the arc is undisturbed, prevents the arc from being imaged and eliminates image distortions caused by the presence of the bright arc.

REFERENCES:
patent: 3020806 (1962-02-01), Castrucci
patent: 3128419 (1964-04-01), Waldkotter et al.
patent: 4306148 (1981-12-01), Ringwall et al.
G. R. Miczaika et al., Tools of the Astronomer, 1961, pp. 248-249.
"Fiber-Optics Couple Arthroscope to TV", NASA Tech. Briefs, vol. 5, No. 4, Fall-1980, pp. 462-463.
S. H. Rao, CWR Technical Report 529613-81-3, Ohio State University, Sep. 1981, pp. xi, xii, 1-5, 24-41.

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