Experimental Analysis of the Cutting Forces Obtained in Dry Turning Processes of UNS A97075 Aluminium Alloys

The knowledge of the cutting forces during the machining can be considered as an index to evaluate the machinability of a material due to the fact that the magnitude of cutting forces are strongly related to the amount of heat in the cutting area, tool wear, quality of machined surface and accuracy of the workpiece. In the present work, an experimental analysis was made from the data obtained during dry turning processes of aluminium alloy (UNS A97075); a design of experiments (DOE) 24 was used to analyse the influence of the cutting parameters (feed rate, spindle speed and depth of cut) and type of tool (nose radius on the cutting forces. As a conclusion, it can be affirmed the cutting component of the forces (Fmz) is more sensible to the variations of the cutting conditions than the rest of components analysed in this study. Furthermore, tools with nose radius of 0.4 and of0.8 mm have similar behaviour from the point of view of the forces generated during the machining at low feed rates.