JPS56135140A - Abnormality diagnostic device for roller bearing - Google Patents
Abnormality diagnostic device for roller bearingInfo
- Publication number
- JPS56135140A JPS56135140A JP3934780A JP3934780A JPS56135140A JP S56135140 A JPS56135140 A JP S56135140A JP 3934780 A JP3934780 A JP 3934780A JP 3934780 A JP3934780 A JP 3934780A JP S56135140 A JPS56135140 A JP S56135140A
- Authority
- JP
- Japan
- Prior art keywords
- value
- bearing
- circuit
- formula
- envelop
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
Abstract
PURPOSE:To enhance diagnostic precision by converting a solid sound generated by a bearing to an electric signal in the form of a speed acceleration signal, taking out only a frequency band required for diagnosis, obtaining an envelop wave-form and using as a scale for abnormality diagnosis a value obtained by a prearranged formula using the average square root value of a square of the envelop wave form and a peak value. CONSTITUTION:A speed acceleration detector 1 is closely 1 is closely attached to a bearing to be diagnosed and a solid sound generated from a bearing is converted to an electric signal in the form of a speed acceleration oscillation. Only a frequency band required for the diagnosis of a bearing of oscillation wave-forms is extracted by means of a filter 2. A signal passing through the filter 2 is introduced into an envelop detection circuit 3. An output signal from this circuit is fed to RMS value(Vrms) calculation circuit 5 and a peak value (Vpeak) calculation circuit 6, thus performing an operation of ''Q'' value as indicated by the formula I with the help of a calculation circuit 7. In this formula, (a) and (b) are constants. This Q value is decided by a decision circuit 11.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3934780A JPS56135140A (en) | 1980-03-27 | 1980-03-27 | Abnormality diagnostic device for roller bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3934780A JPS56135140A (en) | 1980-03-27 | 1980-03-27 | Abnormality diagnostic device for roller bearing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56135140A true JPS56135140A (en) | 1981-10-22 |
JPS6157491B2 JPS6157491B2 (en) | 1986-12-06 |
Family
ID=12550537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3934780A Granted JPS56135140A (en) | 1980-03-27 | 1980-03-27 | Abnormality diagnostic device for roller bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56135140A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127142A (en) * | 1982-01-26 | 1983-07-28 | Nippon Seiko Kk | Detector for bearing defect |
JPS62151621A (en) * | 1985-12-25 | 1987-07-06 | Anritsu Corp | Device for detecting abnormality in rolling bearing |
JPS62270820A (en) * | 1986-05-16 | 1987-11-25 | Nippon Kokan Kk <Nkk> | Method and device for bearing failure diagnosis by vibratory sound |
JPS6449708A (en) * | 1987-08-19 | 1989-02-27 | Hitachi Ltd | Abnormality diagnosing device for rolling bearing |
JP2009229089A (en) * | 2008-03-19 | 2009-10-08 | Fuji Electric Systems Co Ltd | Diagnostic method for rolling bearing of rotary machine |
-
1980
- 1980-03-27 JP JP3934780A patent/JPS56135140A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127142A (en) * | 1982-01-26 | 1983-07-28 | Nippon Seiko Kk | Detector for bearing defect |
JPS62151621A (en) * | 1985-12-25 | 1987-07-06 | Anritsu Corp | Device for detecting abnormality in rolling bearing |
JPS62270820A (en) * | 1986-05-16 | 1987-11-25 | Nippon Kokan Kk <Nkk> | Method and device for bearing failure diagnosis by vibratory sound |
JPS6449708A (en) * | 1987-08-19 | 1989-02-27 | Hitachi Ltd | Abnormality diagnosing device for rolling bearing |
JP2009229089A (en) * | 2008-03-19 | 2009-10-08 | Fuji Electric Systems Co Ltd | Diagnostic method for rolling bearing of rotary machine |
Also Published As
Publication number | Publication date |
---|---|
JPS6157491B2 (en) | 1986-12-06 |
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