The force system and performance of the welding carbide gun drill to cut AISI 1045 steel

作者：Wang, Yongguo^*; Jia, Wenxing; Zhang, Jingsong

来源：International Journal of Advanced Manufacturing Technology, 2014, 74(9-12): 1431-1443.

DOI：10.1007/s00170-014-6072-4

• Welding carbide gun drill
• Force system
• Chip
• Hole machining quality

This paper focused on the force system and performance of the welding carbide gun drill to cut AISI 1045 steel. 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. Both the calculated and experiment data revealed that the force and torque increased with the cutting feed ascending and the cutting speed descending. The wear mechanical was the combination of the adhesive wear, diffusion wear, oxidation wear, and breakage in the gun drill. The chip length became short with the high cutting feed and the low cutting speed. The hole machining quality was highly dependent on the hole diameter and cylindricity. The high cutting feed associated with the high cutting force generated the large beating and lower the hole cylindricity deviation. Thus, the fluctuations of hole cylindrical decreased with the increasing of cutting speed. Considering the force system and the gun drilling performance, the optimized cutting parameters could be chosen basically.

• 出版日期2014-10
• 单位上海大学