Singh GS, Singh R, Singh H, Singh J (2010) Investigation on wear behavior of cryogenically treated TiAlN coated tungsten carbide inserts in turning. Jung J, Ni J (2003) Prediction of coolant pressure and volume flow rate in the gun drilling process. Considering the force system and the gun drilling performance, the optimized cutting parameters could be chosen basically. Thus, the fluctuations of hole cylindrical decreased with the increasing of cutting speed. The high cutting feed associated with the high cutting force generated the large beating and lower the hole cylindricity deviation. The hole machining quality was highly dependent on the hole diameter and cylindricity. The chip length became short with the high cutting feed and the low cutting speed. The wear mechanical was the combination of the adhesive wear, diffusion wear, oxidation wear, and breakage in the gun drill. Both the calculated and experiment data revealed that the force and torque increased with the cutting feed ascending and the cutting speed descending. A carbide gun drill force system had been established by the integration of forces on the main cutting edge, wear pad and outer diameter (OD) relief, and the mechanical equilibrium equations, applying specific energy model, which consisted of the geometry parameters, machining parameters, and material properties. This paper focused on the force system and performance of the welding carbide gun drill to cut AISI 1045 steel.
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