Bearing diagnostic device for machine tool
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United States of America Patent
Stats
-
Apr 3, 2018
Issued Date -
N/A
app pub date -
Jul 14, 2016
filing date -
Sep 7, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bearing diagnostic device senses a failure in a bearing of a machine tool including a rotation shaft device. The bearing diagnostic device includes a rotation counting unit, a temperature measuring unit, a frictional torque calculating unit, a rolling speed calculating unit, a bearing characteristic calculating unit, a storage unit, and a determination unit. The frictional torque calculating unit is configured to calculate a frictional torque of the rotation shaft device. The rolling speed calculating unit is configured to calculate a rolling speed of the bearing from the count of rotations. The bearing characteristic calculating unit is configured to calculate a bearing characteristic from the frictional torque and the rolling speed. The determination unit is configured to compare the bearing characteristic calculated by the bearing characteristic calculating unit with a reference bearing characteristic stored in the storage unit to determine a presence of a failure.
First Claim
Other Claims data not available
Family
International Classification(s)
- G01K:MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT;....
- B23P:OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVE....
- F16N:LUBRICATING
- B21K:MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOE....
- G01M:TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR S....
- F01M:LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUB....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- F16C:SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT ME....
- B21D:WORKING OR PROCESSING OF SHEET METAL OR METAL TUBE....
- 2016 Application Filing Year
- G01K Class
- 805 Applications Filed
- 597 Patents Issued To-Date
- 74.17 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01K Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 3, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 3, 2029 |
