Laser processing apparatus and laser processing method
AssigneesKomatsu Industries Corporation, Furukawa Electric Co., Ltd.
InventorsSeiichi HAYASHI, Kosuke KASHIWAGI
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Abstract
A feeding fiber cable collectively extracts laser light generated by each of a plurality of fiber laser engines. A processing head converges and emits laser light to a workpiece. A process fiber cable transmits the laser light extracted by the feeding fiber cable to the processing head. The core diameter of the feeding fiber cable and that of the process fiber cable are equal and 50 μm. The plurality of fiber laser engines each have a filter that reduces a value of Raman scattered light in the laser light.
Claims9
A laser processing apparatus that processes a workpiece made of a metal material, comprising:
- a plurality of fiber laser engines;
- a feeding fiber cable that collectively extracts laser light generated by each of the plurality of fiber laser engines;
- a processing head that converges and emits laser light to the workpiece;
- and
- a process fiber cable that transmits the laser light extracted by the feeding fiber cable to the processing head,
- a core diameter of the feeding fiber cable and a core diameter of the process fiber cable being equal and 50 μm;
- the plurality of fiber laser engines each having a filter that reduces a value of Raman scattered light in laser light.
A laser processing method for processing a workpiece made of a metal material using a laser processing apparatus, the laser processing apparatus comprising:
- a plurality of fiber laser engines;
- a feeding fiber cable that collectively extracts laser light generated by each of the plurality of fiber laser engines;
- a processing head that converges and emits laser light to the workpiece;
- and
- a process fiber cable that transmits the laser light extracted by the feeding fiber cable to the processing head,
- a core diameter of the feeding fiber cable and a core diameter of the process fiber cable being equal and 50 μm;
- the plurality of fiber laser engines each having a filter that reduces a value of Raman scattered light in laser light, the laser processing method comprising:
- causing the laser light to have a wavelength of a 1 μm band;
- selecting an inert gas as an assist gas;
- and
- selecting a spot diameter at a processing point of the workpiece to be 60 μm or more and 150 μm or less.
Dependencies are inferred from the claim text.