US 2019/0030673 A1 · METHOD FOR DETERMINING THE STATE OF WEAR OF A DRILL, AND CORRESPONDING DEVICE.

Abstract

A method is provided for assessing wear of a drill bit throughout its use for carrying out the drilling of elements to be drilled constituted by at least one layer and at least one material. The wear of the drill bit expresses its capacity to perform a drilling that meets at least one criterion of quality of a drilling. The method includes at least: measuring or detecting at least one parameter having an effect on the wear of the drill bit, the parameter being chosen from: the depth of drilling performed by the drill bit, and the entry of the drill bit into the element to be drilled; and determining at least one state of wear of the drill bit, each state of wear being determined as a function of one of the parameters and being characteristic of one of the criteria of quality of a drilling.

Claims27

Dependent claims

A method for assessing wear of a drill bit throughout its use for carrying out drilling of elements to be drilled constituted by at least one layer and at least one material, the wear of said drill bit expressing its capacity to perform a drilling that meets at least one criterion of quality of a drilling, said method comprising at least the following acts:

measuring or detecting at least one parameter having an effect on the wear of said drill bit, said parameter being chosen from the group consisting of:
a depth of drilling performed by said drill bit;
entry of said drill bit into said element to be drilled;
determining at least one state of wear of said drill bit, each state of wear being determined as a function of one of said parameters and being characteristic of one of said criteria of quality of a drilling the determining of at least one state of wear of said drill bit comprising a weighting as a function of an effect of abrasiveness of the drilled material or materials on the wear of the drill bit, in context of said weighting:
each state of wear is likened to a divergence from a desired value of said criterion of quality of the corresponding drilling;
said divergence varies as a function of totalized values of said corresponding parameter having an effect on the wear of said drill bit according to a predetermined function.

3 more elements

(canceled)

A device for assessing wear of a drill bit throughout its use in order to carry out drilling of elements to be drilled constituted by at least one layer and at least one material, the wear of said drill bit expressing its capacity to carry out a drilling meeting at least one criterion of quality of a drilling, said device comprising at least:

means for measuring or detecting at least one parameter having an effect on the wear of said drill bit, said parameter being chosen from the group consisting of:
a drilling depth drilled by said drill bit;
an entry of said drill bit into the element to be drilled;
means for determining at least one state of wear of said drill bit, each state of wear being determined as a function of one of said parameters and being characteristic of one of said criteria of quality of a drilling said means for determining at least one state of wear of said drill bit carrying out a weighting as a function of the effect of abrasiveness of the drilled material or materials on the wear of the drill bit, in a context of said weighting of which:
each state of wear is likened to a divergence relative to a desired value of said criterion of quality of the corresponding drilling;
said divergence varies as a function of totalized values of said corresponding parameter having an effect on the wear of said drill bit according to a predetermined function.

3 more elements

Dependencies are inferred from the claim text.

Method for determining the state of wear of a drill, and corresponding device.

Life of this patent

Method for determining the state of wear of a drill, and corresponding device.

Life of this patent

Abstract

Claims27