System for estimating the state of wear of a cutting tool during machining
AssigneeAirbus Operations GmbH
InventorsFlorian Versolato, Emeric Noirot-Nerin
Life of this patent
Estimating the term…
Abstract
A method and a system for estimating the state of wear of a cutting tool mounted on a machine tool. The system includes an acquisition module configured to acquire, for a determined duration of machining, values of an operating signal specific to the cutting tool mounted on the machine tool, and a microprocessor configured for calculating current values of a set of wear indicators from the values of the operating signal, and determining the state of wear of the cutting tool as a function of the current values of the set of indicators using a predetermined wear model modeling the state of wear of the cutting tool in function of learning values of the set of wear indicators.
Claims12
A system for estimating a state of wear of a cutting tool mounted on a machine tool, the system comprising:
- an acquisition module configured to acquire, over a determined duration of machining, values of an operating signal specific to the cutting tool mounted on the machine tool;
- and
- a microprocessor configured to:
- calculate current values of a set of wear indicators on a basis of the values of the operating signal;
- and
- determine the state of wear of the cutting tool according to the current values of the set of wear indicators using a predetermined wear model modeling the state of wear of the cutting tool according to training values for the set of wear indicators;
- wherein the acquisition module is configured to acquire, over a training machining operation, a set of values of the training operating signal specific to the cutting tool and a set of training wear measurements corresponding to the cutting tool;
- and
- wherein the microprocessor is configured to:
- calculate a series of training values for the set of wear indicators on a basis of a first portion of the set of values of the training operating signal;
- construct the wear model by applying a regression technique configured to calibrate the series of training values for the set of wear indicators to a first portion of the set of training wear measurements corresponding to the first portion of the set of values of the training operating signal;
- and
- validate the wear model by using a second portion of the set of values of the training operating signal.
A method for estimating state of wear of a cutting tool mounted on a machine tool, the method comprising:
- acquiring, over a determined duration of machining, values of an operating signal specific to the cutting tool mounted on the machine tool;
- calculating current values of a set of wear indicators on a basis of the values of the operating signal;
- and
- determining the state of wear of the cutting tool according to current values of the set of indicators using a predetermined wear model modeling the state of wear of the cutting tool according to training values for the set of wear indicators;
- and
- over a training machining operation, the method comprising:
- acquiring a set of values of the training operating signal specific to the cutting tool and a set of training wear measurements corresponding to the cutting tool, and
- calculating a series of training values for the set of wear indicators on a basis of a first portion of the set of values of the training operating signal;
- constructing the wear model by applying a regression technique configured to calibrate the series of training values for the set of wear indicators to a first portion of the set of training wear measurements corresponding to the first portion of the set of values of the training operating signal;
- and
- validating the wear model by using a second portion of the set of values of the training operating signal.
Dependencies are inferred from the claim text.