Precision Cutting of Structured Ceramic Molds with Micro PCD Milling Tool
Hirofumi Suzuki*, Tatsuya Furuki*, Mutsumi Okada*,
Katsuji Fujii**, and Takashi Goto**
*Department of Mechanical Engineering, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
**NS Tool Co. Ltd., 2-11 Matsuzakataira, Taiwa-cho, Kurokawa, Miyagi 981-3408, Japan
Micro milling tools made of PolyCrystalline Diamond (PCD) have been developed to machine ceramic micro dies and molds. Cutting edges are ground with diamond wheels. PCD milling tool wear is evaluated by cutting binder-less tungsten carbide spherical molds and machining structured surfaces for trial. Results of experiments clarified that PCD milling tool life is over 10 times that of resinoid diamond grinding wheels, and that form accuracy was 0.1 µm-0.3 µm P-V and surface roughness was 10 nm Rz.
Katsuji Fujii, and Takashi Goto, “Precision Cutting of Structured Ceramic Molds with Micro PCD Milling Tool,” Int. J. Automation Technol., Vol.5, No.3, pp. 277-282, 2011.
-  H. Suzuki, T. Kitajima, S. Okuyama, K. Syoji, K. Tsunemoto, and J. Yan, “Precision Grinding of Micro Aspheical Surface –Feasibility Study of 250 µm Aspherical Grinding–,” Proc. of Annual Meeting of the ASPE, St.Louis, 16/1, pp. 149-152, 1998.
-  H. Suzuki, A. Muramatsu, Y. Ymamoto, T. Okino, and T. Moriwaki, “Precision Molding ofMicro Aspherical Glass Lenses,” Proc. of 5th euspen Int. Conf., Montpellier, 1/2, pp. 41-44, 2005.
-  H. Onikura, O. Ohnishi, and Y. Take, “Fabrication ofMicro Carbide Tools by Ultrasonic Vibration Grinding,” Annals of the CIRP, 49/1, pp. 257-260, 2000.
-  H. Suzuki, T. Moriwaki, Y. Yamamoto, and Y. Goto, “Precision Cutting of Aspherical Ceramic Molds with Micro PCD Milling Tool,” Annals of the CIRP, 56/1, pp. 131-134, 2007.
-  H. Suzuki et al., “Precision Grinding of Micro Fresnel Lens Molding Die,” Proc. of 1st euspen Int. Conf., 1/1, pp. 318-321, 1999.