Patent ID: 11865637
Assignee: MURATANI MACHINE INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A laser machining method comprising:
preparing a plurality of optical fibers; a plurality of collimator lenses, each being arranged relative to each of the plurality of optical fibers to pass a laser beam therethrough; a condenser lens condensing the laser beams of the optical fibers; and a supply nozzle for supplying a material by injection, wherein the supply nozzle is arranged so as to penetrate the condenser lens at a center thereof, and the optical fibers are arranged on a periphery of the supply nozzle such that distances between the optical fibers and the collimator lenses or the condenser lens through the collimator lenses are different,
selecting a location of each of the plurality of optical fibers associated with each of the collimator lenses with respect to a radial direction of the condenser lens so that the laser beams are directed to plural different locations on an axis between a nozzle tip port and a welding spot on an axis of the condenser lens or a periphery of the axis, and
irradiating the material supplied from the supply nozzle with the laser beams from the optical fibers at the plural different locations on the axis between the nozzle tip port and the welding spot while melting the material by the laser beams,
wherein distances to the collimator lenses in the plurality of optical fibers are selected differently or the distances of the optical fibers to the supply nozzle located at the center of the optical fibers are different to melt the material at the plural different locations on the axis.