The main purpose of this research is to study the optimal machining parameters for a novel process of thermal friction drilling. The experiment was designed according to the Taguchi method, in which the effects of machining parameters on machining characteristics were explored systematically and comprehensively. Moreover, the significant machining parameters that most intensively affected the machining characteristics and the optimal combination levels of machining parameters associated with the thermal friction drilling on SUS 304 stainless steel were determined through the analysis of variance (ANOVA) and the response graph of signal-to-noise (S/N) ratios. The main machining parameters of thermal friction drilling such as friction angle, friction contact area ratio, feed rate, and drilling speed were selected to evaluate the effects on surface roughness (SR) and bush length (BL). The experimental results show that the thermal friction drilling revealed beneficial effects on SR and BL; meanwhile SR becomes fine and BL is attained for further application. Furthermore, the novel thermal friction drilling avoids serious tool wears, enhances the surface quality of the machined hole, and prolongs the tool life significantly.
Thermal friction drilling Friction angle Friction contact area ratio Surface roughness Bush length Taguchi method
W.L Ku T.S. Sheu H. M. Chow S. M. Lee L D. Yang Y.C. Lin
Department of Information Management, Nan Kai University of Technology, Nan Tou, 54243, Taiwan Department of Industrial Engineering and Management, Nan Kai University of Technology, Taiwan Department of Mechanical Engineering, Nan Kai University of Technology, Nan Tou, 54243, Taiwan Department of Mechanical Engineering, Army Academy, Chung-Li, Taiwan Graduate School of Vehicle & Mechatronic Industry, Nan Kai University of Technology, 54243, Taiwan