Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1977-11-30
1979-06-12
Reynolds, Bruce A.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
21912434, 228 9, 228 45, 318652, 318673, G05D 100, B23K 912
Patent
active
041581610
ABSTRACT:
Sensing apparatus is disclosed which is particularly useful for guiding a welding torch along a seam or joint to be welded. The sensing apparatus comprises a sensor assembly for sensing variations in the welding path, a first drive mechanism for moving the sensor assembly and the welding torch in the opposite transverse direction (i.e., toward the right and left) of the path, and a second drive mechanism for moving the sensor assembly and the welding torch toward and away from the path. For controlling the operation of the drive mechanism in accordance with electrical signals produced by the sensor assembly, three control circuits are provided which can be selectively employed for operating the apparatus in either the two-way sensing, right hand sensing, or left hand sensing mode. The two-way sensing mode is suitable for a butt weld, and the right or the left hand sensing mode for a lap weld and fillet weld.
REFERENCES:
patent: 3171012 (1965-02-01), Morehead
patent: 3408475 (1968-10-01), Fier
patent: 3452180 (1969-06-01), Bollinger et al.
patent: 3530273 (1970-09-01), Bollinger et al.
patent: 3594540 (1971-07-01), Weinfurt
patent: 3596048 (1971-07-01), Maeda et al.
patent: 3997757 (1976-12-01), Cecil et al.
patent: 4010346 (1977-03-01), Cecil et al.
Cecil Equipment Co., publication, 6/1976.
Oujevolk George B.
Reynolds Bruce A.
Shaw Clifford C.
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