Abstract: Considering the burr and collapse edge of machined low stiffness and thin-walled nickel-based alloy honeycomb material using in aerospace, the fixation and processing method should be improved. The material is treated by ice fixation method. CNC milling machine is used for the cryogenic processing. The honeycomb milling properties and the causes of machining defects are analyzed. Low-temperature milling mechanism of ice fixation is established. Results show that, compared to the traditional processing way, the quality of surfaces milled at ice fixation is significantly improved, and the processing defects are effectively suppressed. The cutting depth has greater influence on surface quality than spindle speed. The proposed method can be used to improve the strength of honeycomb. The effects of cutting parameters on milling force are analyzed: the cutting depth has the most significant effect on milling force, followed by spindle speed and feed speed.

Key words: manufacturing technology and equipment, nickel based alloy, honeycomb material, defect, ice fixation, milling force, equivalent strength