LASER BEAM MACHINING METHOD AND LASER BEAM MACHINING APPARATUS

PROBLEM TO BE SOLVED: To ensure excellent quality of a cut surface even when machining is performed by obliquely irradiating a machining surface such as groove surface with laser beams. SOLUTION: In the laser beam machining apparatus, a steel plate 1 is obliquely irradiated with laser beams L from a...

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Bibliographische Detailangaben
Hauptverfasser:	FUJITSUKA NAOHIRO, KAWADE TAKASHI, UENO HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To ensure excellent quality of a cut surface even when machining is performed by obliquely irradiating a machining surface such as groove surface with laser beams. SOLUTION: In the laser beam machining apparatus, a steel plate 1 is obliquely irradiated with laser beams L from a first nozzle 24 (an assist gas injection nozzle), and assist gas G1 is injected along the optical axis thereof. The apparatus has a second nozzle 29 (a nozzle for forming gas flow) to blow support gas G2 against a portion from a backward side of the blowing position of the assist gas G1 (at the position with the laser beams L deviated to the inclined side) on the steel plate 1 in an oblique direction from a more backward side of the portion. Gas inferior in combustibility to the assist gas G1 is injected for the support gas G2. COPYRIGHT: (C)2005,JPO&NCIPI