Title:
LASER CUTTING METHOD, LASER CUTTING NOZZLE, AND LASER CUTTING NOZZLE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/021641
Kind Code:
A1
Abstract:
A laser cutting nozzle (51) is provided with an inner nozzle (1) and an outer nozzle (11). The inner nozzle (1) has a tubular shape including a through-hole (2) on an axis line (CL1) and having a reduced diameter on a first end side, and includes cut-out portions (1a1 to 1a3) extending in the axis line (CL1) direction on an outer peripheral surface on a second end side. The outer nozzle (11) fits on the outer peripheral surface of the inner nozzle (1) and is formed with a ventilation path (GR) including the cut-out portions (1a1 to 1a3) and providing communication between the first end and the second end in the axis line (CL1) direction. A minimum flow path cross sectional area (Smin) of the ventilation path (GR) is matched with an opening area of the cut-out portions (1a1 to 1a3) on an end surface on the second end side.
Inventors:
KUNIHIRO MASATO (JP)
SUGIYAMA AKIHIKO (JP)
ISHIGURO HIROAKI (JP)
MIYOSHI HIRONOBU (JP)
ITO RYOHEI (JP)
MIZOGUCHI YUYA (JP)
SUGIYAMA AKIHIKO (JP)
ISHIGURO HIROAKI (JP)
MIYOSHI HIRONOBU (JP)
ITO RYOHEI (JP)
MIZOGUCHI YUYA (JP)
Application Number:
PCT/JP2018/021582
Publication Date:
January 31, 2019
Filing Date:
June 05, 2018
Export Citation:
Assignee:
AMADA HOLDINGS CO LTD (JP)
International Classes:
B23K26/38; B23K26/14
Foreign References:
| JPH06190582A | 1994-07-12 | |||
| JP2001314986A | 2001-11-13 | |||
| JP2001300753A | 2001-10-30 | |||
| JP3749356B2 | 2006-02-22 | |||
| JP2017146747A | 2017-08-24 |
Other References:
See also references of EP 3659740A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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