Cutting force modeling and parameter optimization of superalloy GH4169
To reduce the cutting force during the processing of superalloy and obtain the optimal cutting parameters,superal-loy GH4169 was taken as the research object,and response surface method(RSM)was employed to design the cutting test with three factors and three levels.Then analysis of variance(ANOVA)was used to analyze the main cutting force,and a mathematical prediction model of the main cutting force was established.Based on the prediction model,the cutting parame-ters were optimized by genetic algorithm(GA).Finally,the optimal cutting parameters were verified by experiment.The re-sults showed that the feed rate and cutting depth had significant influence on the main cutting force.The average prediction error of the prediction model was7.1%,whichwas reasonable.The optimizedcutting force decreasedby14.5%compared with the minimum force observed in the initial test.
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