Modeling and estimation of cutting forces in ball helical milling process

Milling forces play an important role in the milling process and are generally calculated by mechanistic or numerical methods; reliable model of cutting is very for simulation process, which has big scientific significance to further improve machining quality. Ball helical technology used make holes based on principle using ball end cutter, due influence spherical surface characteristic, modeling force difficult. Therefore, main purpose this paper establish analytical process. Considering characteristics axial feed, kinematics first presented, then chip thickness distribution different directions along edges predicted. Furthermore, geometry shape cutter classical mechanical model, through study ball-end mechanics, a new relatively accurate theoretical established. At same time, coefficients identified instantaneous method according Ti-alloy experimental research result. Finally, higher precision received.