Effects of tool edge radius on ductile machining process of CaF2

摘要

The submicron-level orthogonal cutting process of CaF2 has been investigated by the finite element approach, and the effects of tool edge radius on cutting force, cutting stress and chip formation were investigated. The results indicate that increasing the tool edge radius causes a significant increase in thrust force and a decrease in chip thickness. A hydrostatic pressure (--2 GPa) is generated in the cutting region. The volume of the material under high pressure increases with the edge radius. The simulation results from the present study are helpful for optimizing tool geometry design in CaF2 machining.