Title:
LASER BEAM PROCESSING MACHINE AND METHOD FOR DETECTING STATE OF OPTICAL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2019/216040
Kind Code:
A1
Abstract:
According to the present invention, a beam irradiation unit (a collimator unit 30, a processing head 35, and a nozzle 36) has a plurality of optical components for converting a laser beam, which is emission light, into collimator light and then focusing the collimator light to irradiate sheet metal (W). A light detection element (a photodiode 404) detects the intensity of light reflected from an optical component being inspected among the plurality of optical components. A control device (an NC device 50) controls a laser beam serving as inspection light so that the laser beam is emitted onto a pierced region after a piercing process performed in order to manufacture a product by cutting the sheet metal W, and compares the intensity of the reflected light detected by the light detection element when the inspection light is emitted and a threshold to detect for the presence of degradation of the optical component being inspected, or to detect the degree of the degradation.
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Inventors:
KOSHIMIZU HIROSHI (JP)
Application Number:
PCT/JP2019/012301
Publication Date:
November 14, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
AMADA HOLDINGS CO LTD (JP)
International Classes:
B23K26/00; B23K26/38
Foreign References:
| JP2001246489A | 2001-09-11 | |||
| JPH0199792A | 1989-04-18 | |||
| JP2012155159A | 2012-08-16 | |||
| JPH1197776A | 1999-04-09 | |||
| JP2005334924A | 2005-12-08 | |||
| JP2018091101A | 2018-06-14 |
Other References:
See also references of EP 3791992A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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