Minimization of surface roughness and tangential cutting force in whirlwind milling of a large screw

摘要

For achieving efficient processing of a large screw, a precise knowledge of surface roughness and cutting force are vital in whirlwind milling (WM). Distinguishing from the traditional turning and milling, the feeding speed in WM is depended on the other cutting parameters, such as cutting speed and cutting depth, and its geometric relationship is established for further study. In the present work, one of the main contribution is to model the relationship between cutting parameters and the output variables (surface roughness, cutting force) through the response surface methodology (RSM). Then, the effects of the single and combined cutting parameter are analyzed in detail. The other contribution is to achieve the multi-optimization of surface roughness and cutting force with high desirability. By selecting the optimized cutting parameters, the minimization of tangential cutting force and surface roughness can be acquired separately as 100 N and R-a 0.17 mu m. (C) 2019 Elsevier Ltd. All rights reserved.