US5070655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machining process monitor
Assignee: Individual
•
Filing: 1990-11-30
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Granted: 1991-12-10
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Expires: 2010-11-30
Abstract
Abstract A machine tool monitor having a machine power sensor and a machine vibration sensor transmitting respective vibration and power signals to a controller which process the signals and monitors the machines operation to detect a change in the machine's processing parameters solely as a function of the power and vibration signals. The monitor indicates whether the condition of the tool and its associated machining operation warrants scrutiny or should be stopped for service. Besides visual and audible alarm signals the machining condition monitor can be integrated with an automatic control such as an NC controller or PC. In one embodiment a grinding machine monitor is provided with a power sensor and vibration sensor wherein the controller is adjusted to signal conditions associated with wheel sharpness, loss of coolant, and excessive vibrations.
Inventors
- 👤 Trilok R. Aggarwal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:54
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16; B24B49/10; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/406; G05B19/4063
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A machining process monitor for monitoring a machine's operation, said monitor comprising: a vibration sensor for measuring mechanical vibrations of the machine during the machine's operation, a machine power sensor for measuring power consumption of the machining process by the machine during the machine's operation, a computing means for providing output signals indicative of the machines operating condition as a function of vibration directly related to power from vibration and power signals generated by said vibration and power sensors.
Claim 2
Dependent Claim
79 words
A machining process monitor for monitoring a machine's operation, said monitor comprising: a vibration sensor for measuring mechanical vibrations of the machine during the machine's operation, a machine power sensor for measuring power consumption of the machining process by the machine during the machine's operation, a computing means for providing output signals indicative of the machines operating condition as a function of vibration directly related to power from vibration and power signals generated by said vibration and power sensors.
Claim 3
Dependent Claim
32 words
A machining process monitor as claimed in claim 1 wherein said output signals defines at least three operating zones, wherein said zones are an acceptable, a cautionary, and an unacceptable operating zones.
Claim 4
Dependent Claim
21 words
A machining process monitor as claimed in claim 2 wherein said computing means includes a calibration means for defining said zones.
Claim 5
Dependent Claim
16 words
A machining process monitor as claimed in claim 3 wherein said function is linear in nature.
Claim 6
Dependent Claim
87 words
A grinding process monitor for monitoring the operation of a grinding wheel machine having a grinding wheel, said grinding monitor comprising: a vibration sensor for measuring mechanical vibrations of the machine during the machine's operation, a machine power sensor for measuring power consumption of the grinding wheel during the grinding wheel machine's operation, a computing means for providing output signals indicative of the machines operating condition as a function of vibration directly related to power from vibration and power signals generated by said vibration and power sensors.
Claim 7
Dependent Claim
87 words
A grinding process monitor for monitoring the operation of a grinding wheel machine having a grinding wheel, said grinding monitor comprising: a vibration sensor for measuring mechanical vibrations of the machine during the machine's operation, a machine power sensor for measuring power consumption of the grinding wheel during the grinding wheel machine's operation, a computing means for providing output signals indicative of the machines operating condition as a function of vibration directly related to power from vibration and power signals generated by said vibration and power sensors.
Claim 8
Dependent Claim
31 words
A grinding monitor as claimed in claim 5 wherein said output signals defines at least three operating zones, wherein said zones are an acceptable, a cautionary, and an unacceptable operating zones.
Claim 9
Dependent Claim
20 words
A grinding monitor as claimed in claim 6 wherein said computing means includes a calibration means for defining said zones.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |