Estudio de los efectos en la rugosidad superficial en aleaciones de aluminio 7075T6 al aplicar parámetros de corte y estrategias de mecanizado en fresado 3D

Abstract

This research project investigates the influence of cutting parameters and 3D machining strategies on the surface quality obtained in the AA 7075 T6 aluminum alloy material. Where, three types of 3D finishing strategies have been chosen for the machining of inclined surfaces, and the surface quality obtained through the measurement of the roughness is analyzed. In the experiments, the cutting speed, the feed per tooth is varied and the parameters of the cutting depth and spindle speed are kept constant, in accordance with that recommended by the tool manufacturer. The cutting speed varies along the edge of the round tip milling cutter. The CAD design of the specimen to be machined contains three slopes, from 60.5º to 68.5º in 86.5º intervals. A Taguchi statistical methodology was used, where all the variables were combined, therefore, 27 trials are carried out. An ANOVA statistical analysis of the results was performed and it was found that the strategy with the best surface quality is parallel with a downward path (PD), with a cutting speed of 360 m / min and an advance of 0.1 mm / z.