Análisis de la rugosidad superficial por influencia de la velocidad y profundidad de corte en el torneado de AA7075 - T6 mecanizado en un torno CNC.

Abstract

Aluminum alloys have been used very frequently in various sectors of the industry such as navy, aviation, aerospace, automotive and in matrices for injection molds for polymeric products, this due to the excellent physical properties of these alloys as well as their machinability and the cost relatively more accessible in relation to other metals, but the information related to the machining parameters in aluminum and its alloys is limited especially in Ecuador. The present research project seeks to determine the influence of the machining parameters on the surface finish. The factors that will be taken into account for this analysis are: Cutting speed (Vc), Advance per revolution (fn) and Depth of cut (ap), using an EMCO CNC lathe model E200 and an aluminum sample AA 7076- T6 a rolling operation was performed. The Taguchi statistical method was used to establish the experimental model applying an orthogonal model L27, establishing parameters that help us obtain optimal surface finishes and a regression equation for the machining process carried out. According to this research, the statistically most influential factor in surface quality is the Advance per revolution (fn), the models analyzed give a roughness of 0.825 μm as results. After using the optimal machining parameters, an improvement of 4.7% in the roughness is obtained.