JP2001021453A5 - - Google Patents
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- JP2001021453A5 JP2001021453A5 JP1999196010A JP19601099A JP2001021453A5 JP 2001021453 A5 JP2001021453 A5 JP 2001021453A5 JP 1999196010 A JP1999196010 A JP 1999196010A JP 19601099 A JP19601099 A JP 19601099A JP 2001021453 A5 JP2001021453 A5 JP 2001021453A5
- Authority
- JP
- Japan
- Prior art keywords
- value
- bearing
- abnormality
- peak value
- specific frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006748 scratching Methods 0.000 description 6
- 230000002393 scratching Effects 0.000 description 6
- 238000003745 diagnosis Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 2
Description
【特許請求の範囲】
【請求項1】
軸受から発生する振動もしくは音響を電気信号に変換して検出する工程と、
検出された信号波形にエンベロープ処理および周波数分析を行ないかつエンベロープスペクトルのピーク値をオーバーオール値で除算して得られた算出値を予め設定された基準値と比較する工程と、
前記値が前記基準値を越えたときにこの軸受に異常が有るとの判断を下す工程と、
を具備したことを特徴とする軸受の異常診断方法。
【請求項2】
前記ピーク値は、単位時間当たりの波形情報から最大振幅の値を振幅の二乗平均平方根の値で除算して得られる波高率のピーク値であることを特徴とする請求項1に記載の軸受の異常診断方法。
【請求項3】
前記軸受は外輪と内輪と転動体を有し、前記ピーク値は、前記エンベロープスペクトルにおける内輪傷成分の特定周波数(Zfi)と、外輪傷成分の特定周波数(Zfc)と、転動体傷成分の特定周波数(2fb)とのいずれかに対応する位置に生じるピーク値であることを特徴とする請求項1または2に記載の軸受の異常診断方法。
【請求項4】
前記ピーク値を予め定めた基準値と比較して異常診断を行なう工程をさらに備え、該工程が併用されることを特徴とする請求項1から3のいずれか1項に記載の軸受の異常診断方法。
【請求項5】
軸受から発生する振動もしくは音響を電気信号に変換して検出するセンサと、
検出された信号波形にエンベロープ処理および周波数分析を行ないかつエンベロープスペクトルのピーク値をオーバーオール値で除算して得られた値(L/OA)を予め設定された基準値と比較し、かつ、前記値(L/OA)が前記基準値を越えたときにこの軸受に異常が有るとの判断を下す情報処理手段と、
前記判断結果を出力する報知手段と、
を具備したことを特徴とする軸受の異常診断装置。
【請求項6】
前記軸受は外輪と内輪と転動体を有し、情報処理手段は、前記エンベロープスペクトルにおける内輪傷成分の特定周波数と、外輪傷成分の特定周波数と、転動体輪傷成分の特定周波数とのいずれかに対応する位置に生じるピーク値を検出することを特徴とする請求項5に記載の軸受の異常診断装置。
【請求項7】
前記ピーク値を予め定めた基準値と比較して異常診断を行なう装置をさらに備え、該装置が併用されることを特徴とする請求項6に記載の軸受の異常診断装置。
[Claims]
[Claim 1]
The process of converting vibration or sound generated from bearings into electrical signals and detecting them,
A process of performing envelope processing and frequency analysis on the detected signal waveform and comparing the calculated value obtained by dividing the peak value of the envelope spectrum by the overall value with a preset reference value.
The process of determining that there is an abnormality in this bearing when the value exceeds the reference value, and
A method for diagnosing abnormalities in bearings, which comprises the above.
2.
The bearing according to claim 1, wherein the peak value is a peak value of the crest factor obtained by dividing the value of the maximum amplitude from the waveform information per unit time by the value of the root mean square of the amplitude. Abnormality diagnosis method.
3.
The bearing has an outer ring, an inner ring, and a rolling element, and the peak value is a specific frequency (Zfi) of the inner ring scratching component, a specific frequency (Zfc) of the outer ring scratching component, and a rolling body scratching component in the envelope spectrum. The method for diagnosing an abnormality in a bearing according to claim 1 or 2, wherein the peak value occurs at a position corresponding to any of the frequencies (2fb).
4.
The bearing abnormality diagnosis according to any one of claims 1 to 3, further comprising a step of performing an abnormality diagnosis by comparing the peak value with a predetermined reference value, and the step being used in combination. Method.
5.
A sensor that converts vibration or sound generated from a bearing into an electric signal and detects it,
Envelope processing and frequency analysis are performed on the detected signal waveform, and the value (L / OA) obtained by dividing the peak value of the envelope spectrum by the overall value is compared with the preset reference value, and the above-mentioned value. An information processing means for determining that there is an abnormality in this bearing when (L / OA) exceeds the reference value, and
A notification means for outputting the determination result and
An abnormality diagnostic device for bearings, which is characterized by being equipped with.
6.
The bearing has an outer ring, an inner ring, and a rolling element, and the information processing means has any one of a specific frequency of the inner ring scratching component, a specific frequency of the outer ring scratching component, and a specific frequency of the rolling element ring scratching component in the envelope spectrum. The bearing abnormality diagnostic apparatus according to claim 5, wherein a peak value generated at a position corresponding to the above is detected.
7.
The bearing abnormality diagnosing apparatus according to claim 6, further comprising an apparatus for performing an abnormality diagnosis by comparing the peak value with a predetermined reference value, and the apparatus being used in combination.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19601099A JP4120099B2 (en) | 1999-07-09 | 1999-07-09 | Bearing abnormality diagnosis method and abnormality diagnosis device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19601099A JP4120099B2 (en) | 1999-07-09 | 1999-07-09 | Bearing abnormality diagnosis method and abnormality diagnosis device |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001021453A JP2001021453A (en) | 2001-01-26 |
JP2001021453A5 true JP2001021453A5 (en) | 2006-07-13 |
JP4120099B2 JP4120099B2 (en) | 2008-07-16 |
Family
ID=16350735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19601099A Expired - Fee Related JP4120099B2 (en) | 1999-07-09 | 1999-07-09 | Bearing abnormality diagnosis method and abnormality diagnosis device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4120099B2 (en) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2376299B (en) * | 2001-04-02 | 2004-11-03 | Holroyd Instr Ltd | Monitoring the condition or mechanical health of machinery |
JP4149691B2 (en) * | 2001-08-31 | 2008-09-10 | 株式会社東芝 | Method for predicting life of rotating machine for semiconductor manufacturing apparatus and semiconductor manufacturing apparatus |
JP3876976B2 (en) * | 2001-12-18 | 2007-02-07 | 日本精工株式会社 | Evaluation apparatus and evaluation method |
JP2003294035A (en) * | 2002-03-29 | 2003-10-15 | Railway Technical Res Inst | Bearing inner ring creep-detecting device |
EP1548419B1 (en) * | 2002-08-30 | 2013-07-24 | NSK Ltd. | Method and device for monitoring status of mechanical equipment and abnormality diagnosing device |
JP3918939B2 (en) * | 2002-11-21 | 2007-05-23 | 日本精工株式会社 | Machine equipment monitoring system |
JP3871050B2 (en) * | 2002-12-20 | 2007-01-24 | 日本精工株式会社 | Abnormality diagnosis device |
JP2004257836A (en) * | 2003-02-25 | 2004-09-16 | Nsk Ltd | Abnormality diagnostic device of mechanical device |
JP3871054B2 (en) * | 2003-06-26 | 2007-01-24 | 日本精工株式会社 | Machine equipment condition monitoring method and apparatus |
JP3874110B2 (en) * | 2002-08-30 | 2007-01-31 | 日本精工株式会社 | Abnormality diagnosis system |
US7182519B2 (en) * | 2004-06-24 | 2007-02-27 | General Electric Company | Methods and apparatus for assembling a bearing assembly |
JP4529602B2 (en) * | 2004-09-13 | 2010-08-25 | 日本精工株式会社 | Abnormality diagnosis apparatus and abnormality diagnosis method |
DE102004050897A1 (en) * | 2004-10-19 | 2006-05-11 | Siemens Ag | Method and device for detecting a defective bearing of a rotating rotating shaft |
DE102006010847A1 (en) * | 2006-03-09 | 2007-09-13 | Schaeffler Kg | Method for investigating bearing damage |
DE102006025626A1 (en) * | 2006-06-01 | 2007-12-06 | Schaeffler Kg | Procedure for rolling bearing diagnosis |
DE102008019776A1 (en) * | 2008-04-18 | 2009-10-22 | CFS Bühl GmbH | Method, device and knife for slicing food |
ES2456047T3 (en) * | 2008-07-24 | 2014-04-21 | Siemens Aktiengesellschaft | Procedure and configuration to determine the condition of a bearing |
CZ306889B6 (en) * | 2011-08-26 | 2017-08-30 | Viditech Spol. S R. O. | A method of securing machines against vibrations and a device for implementing this method |
JP2017111018A (en) * | 2015-12-17 | 2017-06-22 | ジヤトコ株式会社 | Abnormality detector and abnormality detecting method |
JP6639014B2 (en) * | 2016-06-10 | 2020-02-05 | 株式会社神戸製鋼所 | Resin pelletizer device |
CN106248379B (en) * | 2016-08-19 | 2018-08-21 | 北京航空航天大学 | A kind of bearing with solid lubricant accelerated life test loading spectrum design method |
JP6496061B1 (en) * | 2018-03-30 | 2019-04-03 | オークマ株式会社 | Method and apparatus for diagnosing abnormality of rolling bearing |
JP7146683B2 (en) * | 2019-03-27 | 2022-10-04 | オークマ株式会社 | Rolling Bearing Abnormality Diagnosis Method, Abnormality Diagnosis Device, Abnormality Diagnosis Program |
JP7371512B2 (en) * | 2019-09-10 | 2023-10-31 | オムロン株式会社 | Diagnostic equipment, methods, and programs |
JP6942836B1 (en) * | 2020-04-08 | 2021-09-29 | 株式会社川本製作所 | Anomaly detection device |
CN111947950B (en) * | 2020-07-01 | 2022-03-08 | 北京工业大学 | Multi-dimensional comprehensive stress life test load spectrum design method based on load information matrix |
CN113202862B (en) * | 2021-05-08 | 2022-08-02 | 清华大学 | Joint bearing |
CN115144181B (en) * | 2022-08-30 | 2022-11-11 | 山东梁轴科创有限公司 | Bearing multi-dimensional defect detection method and system |
-
1999
- 1999-07-09 JP JP19601099A patent/JP4120099B2/en not_active Expired - Fee Related
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