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Patent Searching and Data


Title:
METHOD AND DEVICE FOR MONITORING CONDITION OF ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2019/044745
Kind Code:
A1
Abstract:
The present invention estimates the remaining service life of grease sealed in a rolling bearing. A rolling bearing state monitoring method according to the present invention includes a step for producing a classifier by machine learning, and a step for monitoring the condition of rolling bearings. The step for producing a classifier includes steps (S11-S13) for calculating a feature amount for first through third vibration data, and a step (S14) for producing a classifier by machine learning of the feature amounts of the first through third vibration data. The first vibration data is vibration data of a rolling bearing in which grease having a first oil separation rate is sealed. The second vibration data is vibration data of a rolling bearing in which grease having a second oil separation rate, which is lower than the first oil separation rate, is sealed. The third vibration data is vibration data of a rolling bearing in which normal grease is sealed. The monitoring step includes a step for using the classifier to calculate the remaining service life until the oil separation rate of the grease reaches the first oil separation rate.

Inventors:
TSUTSUI, Hideyuki (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
KITAI, Masashi (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
Application Number:
JP2018/031517
Publication Date:
March 07, 2019
Filing Date:
August 27, 2018
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
G01M13/04; F16N29/00
Foreign References:
JP2005291738A2005-10-20
JP2015515002A2015-05-21
JP4605132B22011-01-05
JPS5477189A1979-06-20
US20160313228A12016-10-27
JP2018025450A2018-02-15
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Festival Tower West, 2-4 Nakanoshima 3-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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