Method and system for estimating wear of a drill bit
AssigneeEpiroc Rock Drills Aktiebolag
InventorsGoran Stenberg, Erik Rosendal
Life of this patent
Estimating the term…
Abstract
A method for estimating wear of a drill bit in percussive rock drilling. A percussion device is configured for generating shock waves in a drill bit for breaking rock. The method includes, during drilling determining a percussion frequency of the percussion device; and estimating wear of the drill bit based on the determined percussion frequency of the percussion device and a model representation of the wear of the drill bit as a function of percussion frequency, wherein the model representation is configured to output the estimated wear of the drill bit utilizing the determined percussion frequency as input signal.
Claims18
A method for estimating wear of a drill bit in percussive rock drilling, wherein a percussion device is configured for generating shock waves in a drill bit for breaking rock,
- the method comprising, during drilling:
- determining a percussion frequency of the percussion device;
- estimating wear of the drill bit based on the determined percussion frequency of the percussion device and a model representation of the wear of the drill bit as a function of percussion frequency, wherein the model representation is configured to output the estimated wear of the drill bit utilising the determined percussion frequency as input signal;
- and
- generating a signal representing a current state of wear of the drill bit.
A system for estimating wear of a drill bit in percussive rock drilling, wherein, during drilling, a percussion device is configured for generating shock waves in a drill bit for breaking rock;
- the system comprising:
- at least one control unit configured to:
- determine, during drilling, a percussion frequency of the percussion device;
- estimate wear of the drill bit based on the determined percussion frequency of the percussion device and a model representation of the wear of the drill bit as a function of percussion frequency, wherein the model representation is configured to output the estimated wear of the drill bit utilising the determined percussion frequency as input signal;
- and
- generating, during drilling, a signal representing a current state of wear of the drill bit.
Dependencies are inferred from the claim text.