Modeling and analysis of the chip formation and transient cutting force during elliptical vibration cutting process

摘要

In traditional diamond cutting, the cutting force is usually large and it will affecttool life and machining quality. Elliptical vibration cutting (EVC) as one of theultra-precision machining technologies has a lot of advantages, such as reduces cuttingforce, extend tool life and so on. It’s difficult to predict the transient cuttingforce of EVC due to its unique elliptical motion trajectory. Study on chip formationwill helpfully to predict cutting force. The geometric feature of chip has importanteffects on cutting force, however, few scholars have studied the chip formation. Inorder to investigate the time-varying cutting force of EVC, the geometric featuremodel of chip is established based on analysis of chip formation, and the effectsof cutting parameters on the geometric feature of chip are analyzed. To predicttransient force quickly and effectively, the geometric feature of chip is introducedinto the cutting force model. The calculated results show that the error betweenthe predicted cutting force in this paper and that in the literature is less than 2%,which proves its feasibility. ? 2017 Author(s). All article content, except where otherwisenoted, is licensed under a Creative Commons Attribution (CC BY) license.