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.
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