“…Several researchers (Liao, et al, 2007, Zhang, et al, 2014, Suzuki, et al, 2011, Nambu, et al, 2011, and Liu, et al, 2012 have shown that ultrasonic vibration-assisted machining resulted in the reduction of the cutting force, the improvement of the machined surface, and the extension of the tool life in the drilling of steel, Inconel, tungsten carbide and composite materials. In a previous study, the authors proposed an ultrasonic vibration-assisted helical milling method, and evaluated the effects of the grinding parameters on surface chipping (Noma, et al, 2014).…”