Abstract
AbstractAA7075 aluminum alloy has the same hardness as steel but its weight is only about one-third that of steel. Thanks to this outstanding advantage, this material is widely applied in many different fields, especially in the field of automobile and aviation. Therefore, it is very necessary to study the multi-objective optimization when machining this material. In this article, a study on multi-objective optimization when drilling this material is presented. The experiments were conducted in accordance with a matrix designed by the Taguchi method. Spindle speed and feed rate were two parameters of which optimal values should be determined. Reference Ideal Method (RIM) was used to solve the multi-objective problem. The purpose of this study is to determine the values of the above two cutting parameters to simultaneously ensure the maximum value of Material Removal Rate (MRR), the minimum value of Diameter Error (DE) and the very minimum value of Roundness Error (RE). In addition, the effect of cutting parameters on DE and RE was also discovered. Finally, the directions for further study were also mentioned in this paper.KeywordsDrillAA7075 aluminum alloyMaterial removal rateDiameter errorRoundness errorOptimizationTaguchiRIM
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