Method and apparatus for automatic weld line tracing

Details Method and apparatus for automatic weld line tracing Method and apparatus for automatic weld line tracing

1977-08-09

1980-03-11

Reynolds, Bruce A.

Electric heating

Metal heating

By arc

21912434, 228 9, 318576, B23K 912

Patent

active

041929861

ABSTRACT:
A method and apparatus for automatic weld line tracing using a non-contact sensor for detection of a weld line, which sensor is continuously reciprocated across the groove. Signals produced from the sensor during the reciprocation are compared at the ends of the groove, and the lower voltage value of the two signals is determined. A value lower than the lower voltage of the two signals by .delta. is predetermined and the position associated with the value is detected by a displacement-measuring instrument, the output of which is utilized for control of the positions of a welding torch.

REFERENCES:
patent: 3268805 (1966-08-01), Normando
patent: 3346807 (1967-10-01), Wood et al.
patent: 3430134 (1969-02-01), Flaherty et al.
patent: 3484667 (1969-12-01), Wofsey
patent: 4015101 (1977-03-01), Hannappel et al.

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