1. Department of Mechanical and Systems Engineering, Ryukoku University, Otsu-shi, Shiga, Japan
2. Department of Mechanical Systems Engineering, The University of Shiga Prefecture, Hikone-shi, Shiga, Japan
3. Department of Mechanical Systems Engineering, Fuji High Frequency Co., LTD, Sakai-shi, Osaka, Japan
4. Department of Mechanical Systems Engineering, Nakagawa Machining R&D Center, Wakayama-shi, Wakayama, Japan