Study on the processing characteristics of aluminum honeycomb core by longitudinal torsional composite ultrasonic vibration-assisted cutting

Abstract

Aluminum honeycomb has been widely used in various industrial sectors due to its exceptional physical properties. Ultrasonic vibration machining shows significant potential in reducing machining defects. Therefore, this study employs ultrasonic vibration assisted cutting (UVC) to process aluminum honeycomb core and compares cutting force, surface morphology, and cutting defects with the conventional cutting (CC). This investigation assesses the impact of processing parameters such as feed rate and cutting depth on both UVC and CC. The results indicate that, in comparison to CC, UVC can notably reduce cutting force, minimize tearing burrs and cell deformation defects, and achieve superior surface morphology. Furthermore, the study reveals that cutting force increases with higher tool feed rates and cutting depths. Cell deformation also escalates with increased tool feed rates and cutting depths, and tearing burrs become more pronounced with deeper cuts. Excessively shallow cutting depths can lead to a sudden increase in node defects. Simultaneously, tearing burrs and cell deformation exhibit different characteristics under CC and UVC.