Electric heating – Metal heating – By arc
Patent
1976-05-03
1978-03-07
Truhe, J. V.
Electric heating
Metal heating
By arc
219121LM, B23K 900
Patent
active
040781658
ABSTRACT:
A semi-automatic feed laser apparatus includes a laser beam focused on a workpiece affixed to a pattern template which is urged by the operator against rotatable guide means rotating at a predetermined rate to feed the workpiece smoothly under the laser yet permit manual override of the feeding operation to accommodate irregularities or surface non-uniformities in the workpiece. Advantageously, the guide means include a hollow cylinder-like member and drive means operably connected thereto for rotating the guide cylinder. As preferably embodied, one end of the guide cylinder is adapted to contact the template while its other end is coupled to an exhaust system for removing debris and combustion particles immediately from the work area. Moreover, the axis of the cylinder may be generally aligned with the laser beam to allow harmless defocusing of the laser radiation. According to another aspect of the invention, cooling means surrounds the guide for cooling the wall of the guide to prevent the plating or build-up of molten debris. Alternatively, the cylinder axis may be slightly askew of the laser beam to enable cooling means to be positioned immediately under the workpiece for cooling debris generated during the cutting operation.
REFERENCES:
patent: 3453097 (1969-07-01), Hafner
patent: 3469076 (1969-09-01), Saslawsky
patent: 3866398 (1975-02-01), Vernon et al.
patent: 3909582 (1975-09-01), Bowen
Electronic Packaging & Production, Kiver, Mar., 1971, pp. 22-24, 26, 28, 30 & 32.
Bell Fred E.
Grumman Aerospace Corporation
Truhe J. V.
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