Comprehensive investigation on the residual stress of large screws by whirlwind milling
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This study investigated the influence of cutting parameters on the residual stress obtained in whirlwind milling of AISI 52100 steel. Single-factor and Box-Behnken experiments were separately carried out. A prediction model of residual stress was developed on the basis of response surface methodology using experimental data. Results indicated that the cutting depth was the dominant factor, and the interaction between cutting speed and tool number was significant. The developed model could be effectively used to predict surface residual stress within high confidence. The optimum value and cutting condition were validated by confirmation experiments.
KeywordsResidual stress Response surface methodology Optimisation
This work was supported by the National Natural Science Foundation of China-Youth Found Project [grant number 51805243]; the Jiangsu Natural Science Foundation-Youth Found Project [grant number BK20160780]; and the PhD Research Startup Foundation of Nanjing Institute of Technology [grant number YKJ201518].