Tool condition and failure monitoring apparatus and method
US4658245A · kind A · utility
37Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1983 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 29, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37493
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus and method for tool condition and failure monitoring system for predicting imminent tool failure by sensing acoustic emissions from a cutting operation converting the emissions into an electrical signal filtering the electrical signal and using a "count rate" technique on the filtered signal to generate a signal indicative of imminent failure. To improve the prediction, the filtering includes removal of low frequency and d.c. signals and the imminent failure is indicated only after several successive periods of a triggering level of count rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.