Method for creating amount of wear estimation model, method for estimating amount of wear, amount of wear estimation model creation apparatus, program for creating amount of wear estimation model, amount of wear estimation apparatus, and program for estimating amount of wear

A method for creating an amount of wear estimation model, the method comprising:

• a data obtaining step of obtaining, for at least one cutting tool in a machining system at a plurality of sampling times, data in which measurement information regarding an amount of wear of the cutting tool and measurement information regarding a physical quantity, which correlates with the amount of wear, of the cutting tool during cutting are associated with each other;
• a clustering step of clustering a plurality of pieces of the obtained data on a basis of the measurement information regarding the physical quantity included in each of the plurality of pieces of data;
• and
• a model creation step of creating, for each of clusters on a basis of the measurement information regarding the physical quantity and the measurement information regarding the amount of wear included in the data, a model for obtaining estimation information regarding the amount of wear from new measurement information regarding the physical quantity,
• wherein
• the data obtaining step includes:
• obtaining time-series data by accumulating measured values of vibration of the cutting tool measured during cutting, the time-series data being provided by a sensor provided for the cutting tool or by a recording medium,
• generating at least one feature value from the time-series data,
• the clustering step includes clustering the plurality of pieces of the obtained data on a basis of the generated at least one feature value, and
• the model is created for each of the clusters to reflect a correlation between the vibration and the amount of wear for estimating cutting tool wear, and
• the created model estimates whether an end of life of the cutting tool has come to control replacement of the cutting tool.