中文摘要：

基于均匀设计法设计了含定性因素混合水平的高速精铣试验方案,用最优回归子集法建立了切削力、切削温度、表面完整性的多元二次回归模型,回归效果显著;重点分析了切削条件对表面完整性的影响规律;基于回归模型建立了高温合金高速精铣切削参数多目标优化模型,验证结果显示模型具有较高的预测精度。研究结果对高温长寿命工作下的试件表面质量控制和切削参数优化具有指导性意义。

英文摘要：

A high-speed finish milling experimental program contained qualitative factor hybrid levels was projected by uniform design method.The finish milling multiple quadratic regression model of superalloys was established,and cutting force,cutting temperature and surface integrity were taken as objective functions in it.This model shows a good regression effects.Meanwhile,the influence laws of cutting conditions on the surface integrity were analyzed emphatically.Based on the regression models,a multi-objective optimizing model of high-temperature alloy＇s parameters in highspeed finish milling was built,and the test results show a high predictive accuracy.The conclusions provide a directional significance for cutting parameter selections and quality controls of superalloys under a long bearing life at high temperature.