Mitigating distortion of coated parts during laser drilling
US-9844834-B2 · Dec 19, 2017 · US
Laser processing apparatus
US2016207144A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016207144-A1 |
| Application number | US-201414914211-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 26, 2014 |
| Priority date | Aug 28, 2013 |
| Publication date | Jul 21, 2016 |
| Grant date | — |
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Abstract
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In order to simplify a configuration even if laser beams of different wavelength bands are used, a laser output device, which oscillates laser beams of plural wavelength bands, and an irradiation head, which performs irradiation by condensing the laser beams of the respective wavelength bands with focal distances thereof being shifted from each other on the same optical axis S, are included.
First claim
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1 . (canceled) 2 . A laser processing apparatus comprising: a laser output device that oscillates laser beams having plural wavelength bands; and an irradiation head that is configured to irradiate the laser beams of the respective wavelength bands to condense at focal distances being shifted from each other on the same optical axis, wherein the irradiation head positions, with respect to a workpiece made of an aluminum alloy, a focal position of a laser beam having a long wavelength of 940 nm at a position to be processed, and condenses a laser beam having a short wavelength of 808 nm with a focal point of the laser beam having the long wavelength being placed in the center. 3 . A laser processing apparatus comprising a laser output device that oscillates laser beams having plural wavelength bands; and an irradiation head that is configured to irradiate the laser beams of the respective wavelength bands to condense at focal distances being shifted from each other on the same optical axis, wherein the irradiation head positions, with respect to a workpiece made of an iron or a mild steel, a focal position of a laser beam having a short wavelength of 808 nm at a position to be processed, and condenses a laser beam having a long wavelength of 10.6 μm with a focal point of the laser beam having the short wavelength being placed in the center. 4 . The laser processing apparatus according to claim 2 , further comprising a focal distance adjusting device including a concave glass and a convex glass that are each configured to be movable in an optical axis direction. 5 . The laser processing apparatus according to claim 2 , further comprising: a moving mechanism that relatively moves a supporting table, which supports a the workpiece, and the irradiation head; and a control device that adjusts the relative movement between the supporting table and the irradiation head by the moving mechanism, and various conditions of the laser beams output from the laser output device.
Assignees
Inventors
Classifications
- B23K26/0617Primary
and with spots spaced along the common axis · CPC title
Operations & Transport · mapped topic
- B23K26/0648Primary
comprising lenses · CPC title
by boring or cutting · CPC title
by shock processing · CPC title
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- What does patent US2016207144A1 cover?
- In order to simplify a configuration even if laser beams of different wavelength bands are used, a laser output device, which oscillates laser beams of plural wavelength bands, and an irradiation head, which performs irradiation by condensing the laser beams of the respective wavelength bands with focal distances thereof being shifted from each other on the same optical axis S, are included.
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23K26/0617. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jul 21 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).