ERIMENTAL STUDY ON HIGH SPEED FACE-MILLING OF MB2 MAGNESIUM ALLOY

摘要

With cutting speed (range from 471～2356 m/min), feed per tooth (range from 0.05～0.25 mm/z)and depth of cut (range from 0.2～3.4 mm), the characteristics of primary cutting forces in high speed dry machining of magnesium alloy are studied, and the high speed cutting deformation mechanism is also discussed in this paper. Through three-factor factorial design and partial regression, the influences of cutting regimes on milling force are observed. The empirical formula of cutting force is established by statistic analysis tools such as residual analysis and least square algorithm. It is concluded that depth of cut and feed per tooth are the main influence factors on primary cutting forces; the main cutting force will begin to decrease with the increase of cutting speed; in specified cutting regimes, the calculation results from the empirical formula are in good agreement with the experimental results.