Authors : Minh Tuan Ngo, Vi Hoang and Vinh Sinh Hoang
Abstract: Applying nanofluid formulates using dispersions of nano Aluminum Oxide (Al2O3) in normal oil may decrease the Total Cutting Force (TCF) in the gear hobbing because the nearly spherical Al2O3 nanoparticles easily entry into the contact area friction to decrease the friction. However, the gear hobbing is very complicated, difficult to measure TCF and has the high cost for an experience. Therefore, a fly-hobbing process was used to perform cutting on a milling machine so that the size of chip produced was the same as the largest cutting chips produced during the hobbing process. This study focused on the fly cutting process of SCM420 steels using cutting fluid mixed Al2O3 nanoparticles. The influence of the parameters on TCF was evaluated through the mean value and ratio (S/N) by Taguchi’s method. The results indicated that nanoparticles size, nanoparticles concentration and interaction between them were the most significant parameters that influenced TCF of fly hobbing. The nanoparticle size 20 nm showed a minimum TCF lower 13.2% than nanoparticle size 135 nm. Using cutting fluids added 0.5% Al2O3 nanoparticles can reduced the TCF by 17.6% as compared with 0.1% Al2O3.
Minh Tuan Ngo, Vi Hoang and Vinh Sinh Hoang, 2017. Optimization Cutting Fluids and Parameters for Minimizing Cutting Force in Fly-Hobbing. Journal of Engineering and Applied Sciences, 12: 5212-5218.