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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 (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
SUGIYAMA Akihiko (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
ISHIGURO Hiroaki (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
MIYOSHI Hironobu (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
ITO Ryohei (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
MIZOGUCHI Yuya (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
Application Number:
JP2018/021582
Publication Date:
January 31, 2019
Filing Date:
June 05, 2018
Export Citation:
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Assignee:
AMADA HOLDINGS CO.,LTD. (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
International Classes:
B23K26/38; B23K26/14
Foreign References:
JPH06190582A1994-07-12
JP2001314986A2001-11-13
JP2001300753A2001-10-30
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (Toranomon Kotohira Tower, 2-8 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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