Regresar

Optimization of geometric quality in a 5 axis machining of curved surfaces in a EN-AW-7075 alloy by taguchi method

Abstract:

This paper describes a methodology to optimize the machining parameters utilized in a 5-Axis milling machine (DMU 60 eVo DECKEL MAHO) in order to minimize the surface roughness of the EN-AW-7075 alloy in convex and concave machined specimens. Tilt angle (A), feed rate (B), tool path pattern (C) and depth of cut (D) were the parameters considered for this analysis. The Taguchi Method, the analysis of variance and the signal-to-noise were applied as part of the design of the experiments and analysis. An orthogonal array L27 at three levels was conducted for the experiments. According to this study, factors A and C are statistically significant towards the final surface roughness for both cases under study. The predicted models give surface roughness of 0.2049 µm for the convex-case and 0.1448 µm for concave-case. From the confirmation tests, it can be concluded that an improvement of 13.93% and 11 …