Vibration Analysis and Experimental Research on Machining of Superalloy Honeycomb Cores
Due to its thin-walled porosity and weak rigidity in the face,the machining of superalloy honeycomb cores is prone to burrs,tears and collapsed edges,etc.The use of ice fixation processing has improved the machining quality,but there is still a problem of large vibration amplitude.To address the vibration problem of ice fixation machining of superalloy honeycomb cores,the main form of vibration in ice fixation machining of superalloy honeycomb cores is analysed as forced vibration under non-harmonic non-periodic excitation,and the law of change of forced vibration excitation time due to change of tangent angle is solved.The effect of cutting dosage on the vibration of ice fixation machining of superalloy honey-comb cores is obtained through tests.The test results show that when the spindle speed is 7000r/min,the feed rate is 4000mm/min,the axial cutting depth is 0.5～1.5mm and the radial cutting width is 0.5mm,the vibration amplitude is small,the machining condition is stable and the machining quality is good.
万方数据
维普
