Abstract
The updated-Lagrangian finite element modeling of high throughput drilling of Ti-6Al-4V using a spiral point drill was conducted. In the model, the chisel and cutting edges of a spiral point drill were treated as a series of straight-cutting-edge elementary cutting tools with various rake and inclination angles. The oblique-cutting finite element modeling software, AdvantEdge™, was applied to study the cutting forces and material deformation of each elementary cutting tool. Both dry drilling and drilling with internal cutting fluid supplied through the drill body, were investigated. All drilling tests have the same high material removal rate (384 mm 3 /s) but different cutting speeds and feeds. The thrust force and torque predicted by the finite element model matched well with experimentally measured values. The model also enables better understanding of the work-material deformation and drill temperatures and stresses.