Laser processing machine and laser cutting method
AssigneeAmada Holdings Co., Ltd.
InventorsHiroshi Sako, Hiroaki Ishiguro, Akihiko Sugiyama, Yuya Mizoguchi
Life of this patent
Estimating the term…
Abstract
A laser processing machine includes a laser oscillator. The laser oscillator excites a laser beam having a wavelength in a 1 μm band or a shorter wavelength band. One process fiber transmits the laser beam emitted from the laser oscillator. A focusing optical element focuses, when a workpiece is irradiated with the laser beam emitted from the process fiber, the laser beam on a plurality of spots in a unit area within a unit time, the unit area having a radius of 0.5 mm of an optical axis of the laser beam, and the unit time being a time from when the workpiece starts to melt to when the melting of the workpiece ends.
Claims5
A laser cutting method comprising:
- emitting a laser beam from a laser oscillator that excites a laser beam having a wavelength of 1060 nm to 1080 nm or 910 nm to 950 nm;
- allowing one process fiber to transmit the laser beam emitted from the laser oscillator;
- melting a workpiece with the laser beam and supplying assist gas to the workpiece at an assist gas pressure of 2.0 MPa to 3.0 MPa;
- and
- cutting the workpiece by allowing a focusing optical element to focus, when the workpiece is irradiated with the laser beam emitted from the process fiber, the laser beam on a plurality of spots in a unit area within a unit time, the unit area having a radius of 0.5 mm of an optical axis of the laser beam irradiated on the workpiece, and the unit time being a time from when the workpiece starts to melt to when the melting of the workpiece ends.
A laser cutting method comprising:
- emitting a laser beam from a laser oscillator that excites a laser beam having a wavelength of 1060 nm to 1080 nm or 910 nm to 950 nm;
- allowing one process fiber to transmit the laser beam emitted from the laser oscillator;
- and
- irradiating a workpiece with the laser beam having a beam parameter product of 23 mm mrad to 28 mm mrad so as to melt the workpiece;
- and
- cutting the workpiece by allowing a focusing optical element to focus, when the workpiece is irradiated with the laser beam emitted from the process fiber, the laser beam on a plurality of spots in a unit area within a unit time, the unit area having a radius of 0.5 mm of an optical axis of the laser beam irradiated on the workpiece, and the unit time being a time from when the workpiece starts to melt to when the melting of the workpiece ends.
Dependencies are inferred from the claim text.