This paper studied the cutting properties of Ti-6Al-4V under cryogenic cooling to find a solution for
improvement in tool load-carrying, thermal stress, tool life and finish quality. Firstly, this paper established a 3D cutting
model of Ti-6Al-4V under cryogenic cooling with liquid nitrogen, and then set the parameters of material, friction model
and cutting conditions. Based on this model, the results of chips’ shape, cutting forces and temperature distribution were
obtained in the simulation with different cooling approaches. The results revealed that although the cryogenic cooling
with liquid nitrogen can slightly increase the main cutting force, yet it can efficiently cool the cutting area, and the cooling
will contribute to the deformation of chips thereby improving the finish quality.