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Titanium alloys are considered as poor machinability material due to high chemical reactivity with the cutting tool and low thermal conductivity properties. Thus, high cutting temperature and pressure at cutting-edge result high tool wear and tool damage. The drilling parameters are the one alternative to reduce high temperature which increases tool life. In this investigation, to avoid the cost of the material and time in the machining of Ti-6Al-4V, a 3D FEM has been proposed to study the drilling operation. The simulation model has been carried out with DEFORM software by varying cutting speed and feed rates to study thrust, torque, effective stress, effective strain and drill bit temperature. According to this investigation, the drill bit temperature was increased with the increase of all range feed rates, whereas an increase of cutting speed reduced the hardness of workpiece due to thermal softening, thus low temperature on drill bit was observed. The better surface finish was observed at high cutting speed and low feed rate. To validate the simulation model, a series of experiments have been performed in the same cutting condition. Torque, thrust, and circularity have been evaluated and compared with the simulated results. A close agreement with fewer errors between them was observed which reveals that the simulation model is correct. Keywords: Ti-6Al-4V, DEFORM, Drilling, Torque, Thrust