Tool behaviour in stone cutting is a complex problem which, up to now, has been treated in literature mainly by empirical models. The study of a wear model is very important in order to set up methods of selection of both tools and machining conditions. In this work a semi-empirical approach is proposed to study the wear of metal-bonded diamond tools. A theoretical model, that was already presented in a previous work, is further refined on the basis of experimental results concerning the wear of diamond end mills. The model is based on the assumption that the tool wear rate depend on two basic factors: the former being only a matrix characteristic and the latter only a grain characteristic, both to be determined experimentally. In this work it is shown how the parameters of the model can be deduced from experimental tests where the trend of micro-geometric features have been measured. The analytical results obtained form the model can give an useful aid in the interpretation of the wear phenomenon; however they can be also used to establish criteria for planning experimental tests in order to obtain a semi-empirical model able to predict the tool behaviour and life.

Tool Wear in Stone Cutting: Theoretical Model and Experimental Validation

DI ILIO, Antoniomaria;PAOLETTI, ALFONSO;
2004-01-01

Abstract

Tool behaviour in stone cutting is a complex problem which, up to now, has been treated in literature mainly by empirical models. The study of a wear model is very important in order to set up methods of selection of both tools and machining conditions. In this work a semi-empirical approach is proposed to study the wear of metal-bonded diamond tools. A theoretical model, that was already presented in a previous work, is further refined on the basis of experimental results concerning the wear of diamond end mills. The model is based on the assumption that the tool wear rate depend on two basic factors: the former being only a matrix characteristic and the latter only a grain characteristic, both to be determined experimentally. In this work it is shown how the parameters of the model can be deduced from experimental tests where the trend of micro-geometric features have been measured. The analytical results obtained form the model can give an useful aid in the interpretation of the wear phenomenon; however they can be also used to establish criteria for planning experimental tests in order to obtain a semi-empirical model able to predict the tool behaviour and life.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/19159
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