Method and system for determining the wear of a drill bit in real time
US4228514A · kind A · utility
21Cited by
14References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Apr 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/4065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a system are disclosed for determining the wear of a drill bit in real time. At a predetermined point prior to engagement of the drill bit with the workpiece, a first rotational speed of the drill bit is ascertained. Upon exit of the drill bit from the workpiece a second rotational speed is determined. Measurement of these two rotational speeds enables a determination to be made of the loss of energy resulting from the drilling operation. This loss in energy is used to produce a measure of drill bit wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.