Electric heating – Metal heating – By arc
Patent
1999-04-12
2000-09-26
Mills, Gregory
Electric heating
Metal heating
By arc
21912175, 21912184, B23K 2600
Patent
active
061245658
ABSTRACT:
A laser cutting machine includes a driving apparatus for moving a laser head axially. An inner sleeve having a converging lens is coupled to the laser head. An outer sleeve having a nozzle is supported to move relative to the inner sleeve. A braking mechanism is arranged between the inner and outer sleeves to selectively lock the outer sleeve to the inner sleeve. An actuator moves a catch to selectively engage the outer sleeve, which holds the outer sleeve at a predetermined position. The driving apparatus moves the laser head when the outer sleeve is held at the predetermined position and the outer sleeve is released from the inner sleeve by the braking mechanism. This moves the outer sleeve relative to the inner sleeve and automatically adjusts the distance between the converging lens and the nozzle. This permits automation of a focal point position adjustment method.
REFERENCES:
patent: 4324972 (1982-04-01), Furrer et al.
patent: 4406940 (1983-09-01), Tsutsumi
patent: 5298716 (1994-03-01), Ogawa et al.
patent: 5948292 (1999-09-01), Tanaka et al.
Kitamoto Tetsuichi
Morishita Akio
Tashiro Minoru
Mills Gregory
Yamazaki Mazak Kabushiki Kaisha
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