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Title:
LASER MACHINING DEVICE, CONTROLLING APPARATUS AND DETERMINING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/215793
Kind Code:
A1
Abstract:
This laser machining device (100) comprises: a laser oscillator (1) which emits laser light (4); a machining head (5) which laser machines a workpiece (9) by means of irradiating the laser light (4); a controlling apparatus (10) which controls the laser oscillator (1) and the machining head (5); a light sensor (8) which measures scattered light from the workpiece (9) generated when the laser light (4) is irradiated onto the workpiece (9), and outputs a signal in accordance with the scattered light; a threshold value setting unit (14) which, on the basis of the signal, which is outputted during a certain period after piercing starts, sets a threshold value as a reference for determining whether a hole was opened through the workpiece (9) by means of the piercing; and, a through-opening determining unit (13) which, on the basis of the signal and the threshold value, determines whether a hole was opened through the workpiece (9).

Inventors:
NISHIWAKI, Motoaki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KOSHIMAE, Toshiki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
OMURA, Hiroyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KOZUKI, Takahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/017660
Publication Date:
November 14, 2019
Filing Date:
May 07, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
B23K26/382; B23K26/03
Attorney, Agent or Firm:
TAKAMURA, Jun (Sakai International Patent Office, Toranomon Mitsui Building 8-1, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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