Browsing by Author "Ramírez Gangotena, Leonidas Esteban"

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    Estudio de la rugosidad superficial y el desgaste de herramientas de carburo en el proceso de torneado para una aleación de aluminio AA 7075-T6 (PRODAX)
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2020) Ramírez Gangotena, Leonidas Esteban; Analuiza Maiza, Oscar Iván
    The aluminum alloy AA 7075-T6 has advantages due to its mechanical properties, its good machinability and its understandable cost compared against other materials. Therefore, it has a great field in its industrial applications, especially in the automotive industry, aviation, marine, injection, among others. The aim of this investigation is to study the impact of the cutting parameters in the surface roughness and the tool wear, for the CNC turning machining of an aluminum alloy AA 7075-T6. An experimental methodology has been used and the considered factors were the cutting speed (Vc), feed rate (f), cutting depth (Ap) and the experimental essays were done with two levels for each factor. The turning machining was carried out in a CNC turning machine, EMCO brand model EMCOMAT E-200 by doing 16 essays according to the arrangement, by the corresponding experimental design of a complete factorial. Thus, it was established the factors that influence in the surface finish and the cutting tool wear. By using an ANOVA analysis of variance, it was determined that, for a surface roughness, the feed rate influences in 95.91 percent, the cutting speed 0.00803 percentage, the cutting depth 0.1813 percent and the type of cutting tool 1.22 percent. Meanwhile, for the cutting tool wear, the feed rate influences in 0.94 percent, the cutting speed 1.84 percent, the cutting depth 3.954 percent and the type of cutting tool 82.136 percent. In function of the analysis of the obtained results, it was determined the optimum cutting parameters, establishing a cutting speed of 400 [m/min], feed rate of 0.1 [mm/rev], cutting depth of 1.5 [mm] and chemical vapor deposition covering (CVD) as type of cutting tool. Under these parameters, the surface roughness (Ra) was 0.7098 [µm] and the cutting tool wear was 0.9233 [µm].