Otimização de ensaios utilizados na determinação dos coeficientes da Equação de Taylor Expandida

Abstract

The absence of a criterious methodology when carrying out cutting tool life trials for the determination of the Taylor’s equation coefficients, may lead to unreliable results. This work presents an optimized procedure to generate the most appropriated group of cutting parameters to be used during the tests to obtain the adjustment of the coefficients of Taylor’s equation for machining processes. A method is proposed to determine the confidence intervals of Taylor’s expanded equation coefficients and to predict cutting tool life. In order to validate the proposed methodology, face milling trials of ABNT 1045 steel (average hardness of 192 HB) were carried out using coated carbide inserts (ISO grade P45 M35). This allowed the reliability of Taylor’s equation for milling operations to be verified. The results indicated that the suggested procedure provided a considerable reduction in the amount of tests required to obtain reliable coeficients, in comparison to traditional approaches. Additionally, a great reduction in costs and an increase in efficiency was achieved when establishing optimized cutting conditions.