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Title:
ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION SYSTEM, ABNORMALITY DETECTION METHOD, AND ABNORMALITY DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/119729
Kind Code:
A1
Abstract:
An abnormality detection system (1) acquires a frequency component of a sound generated due to cutting by a cutting machine (10). A value (Sa) is calculated, the value being obtained by averaging values pertaining to intensities corresponding to frequencies, of a frequency component, that are in a predetermined range which includes the frequencies when a tool (13) of the cutting machine (10) is worn due to the cutting. Further, when the averaged value (Sa) is outside a range between a damage threshold value (Sb_th) and a wear threshold value (Sw_th), the tool (13) is determined to be abnormal.

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Inventors:
MORINAGA TAKESHI (JP)
KAWAGUCHI JUNKI (JP)
KOYAMA YUJI (JP)
KAWAI TETSUTO (JP)
Application Number:
PCT/JP2022/031894
Publication Date:
June 29, 2023
Filing Date:
August 24, 2022
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
G01M99/00; B23Q17/09; B23Q17/24; G05B19/18
Domestic Patent References:
WO2000073018A12000-12-07
Foreign References:
JPH0463662A1992-02-28
JPS62166948A1987-07-23
JPH04372340A1992-12-25
JPH106170A1998-01-13
JPH0215954A1990-01-19
JPH09174383A1997-07-08
JPH0985587A1997-03-31
JP2006130604A2006-05-25
JPH0885047A1996-04-02
JP2016135511A2016-07-28
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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