Electric heating – Metal heating – By arc
Patent
1991-08-06
1992-10-13
Albritton, C. L.
Electric heating
Metal heating
By arc
21912167, 2191217, 21912168, B23K 2602
Patent
active
051553287
ABSTRACT:
A device for detecting the state of cutting of metal sheet in laser beam machining. The device has a sensor head for catching and guiding light induced on a metal sheet in laser beam machining to a detecting section which includes an input amplifier, pierce finish detecting sections, an improper cutting detecting section, and a NC output section. The light is converted into electric signals and sent to all the detecting sections, whereby the signals are compared with reference values, and finish of piercing and improper cutting states such as gousing and burning are detected and as a result a pierce finish signal and an improper cutting signal are sent to a NC device of laser beam machinery by means of the NC output section to control machining.
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patent: 4818841 (1989-04-01), Sliva et al.
patent: 4952770 (1990-08-01), Heyashi
European Search Report, EP 91 11 3229, dated Mar. 25, 1992 (Berlin).
Patent Abstracts of Japan, vol. 10, No. 151 (M-483) (2208), May 31, 1986.
Albritton C. L.
Amada Company Limited
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