关键词: 机械制造工艺与设备 , 镁合金 , 高速切削 , 均匀设计 , 切削力 , 高斯一牛顿法 , 非线性建模

Abstract: In nign-speed cutting condition, cutting velocity from 471 m/min to 2356 m/min, factorials design and uniform design were applied to the high-speed milling experiments of magnesium alloy. The characteristics of this material in high-speed cutting process were analyzed and a nonlinear mathematical model of the relation?ship between cutting force and depth of cut, feed per tooth, cutting velocity was proposed. Experiments indicate that, under the high-speed cutting condition, the interaction of cutting velocity and feed per tooth is one of statistic significant effects on cutting force; the relationship between cutting force and cutting parameter is non?linear and the effect of one cutting parameter on cutting force is sensitive to the choice of other cutting parame?ters.

Key words: technology and equipment of machine building , magnesium alloy , high-speed machining , uniform design , cutting force , Gauss-JNewton method , nonlinear modeling