The present study examines the machinability characteristics of end milling process on the Jobber XL CNC machining center to produce minimum surface roughness, minimum cutting force, and maximum material removal rate for Al7075 metal matrix composites. Milling experiments were carried out using Taguchi design of experiment via L27 orthogonal array. Experiments were carried out by varying the milling parameters such as spindle speed, feed rate, and depth of cut along with different weight percentages of zirconium oxide (ZrO₂ 2.5%) and graphite (C 2.5%, 7.5%, 12.5%). The effects of milling parameters and reinforcement inclusion percentages on cutting forces, surface roughness, and material removal rate were determined and analyzed by using ANOVA. Also, an optimal combination of machining parameters was identified using grey relational analysis. The identified optimal parameters such as spindle speed of 1500 rpm, feed rate of 0.1 rev/mm, and a depth of cut of 0.1 mm were verified using confirmation tests to validate the experimental results. From the results, it is observed that spindle speed and feed rate are the most influencing parameters on the surface roughness and cutting forces.

本研究研究了在Jobber XL CNC加工中心上进行立铣刀加工的可加工性特征，以产生最小的表面粗糙度，最小的切削力和最大的Al7075金属基复合材料去除率。使用Taguchi设计的实验通过L27正交阵列进行研磨实验。通过改变铣削参数（例如主轴转速，进给速度和切削深度）以及不同重量百分比的氧化锆（ZrO _{2）来进行实验}2.5％）和石墨（C 2.5％，7.5％，12.5％）。使用方差分析确定并分析了铣削参数和钢筋夹杂物百分比对切削力，表面粗糙度和材料去除率的影响。此外，使用灰色关联分析确定了加工参数的最佳组合。使用确认测试验证了确定的最佳参数，例如主轴转速1500 rpm，进给速度0.1 rev / mm和切深0.1 mm，以验证实验结果。从结果可以看出，主轴转速和进给速度是对表面粗糙度和切削力影响最大的参数。