Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore
doi:10.3850/978-981-18-6021-8_OR-14-0278
Micro mechanical machining of cemented carbide using PCD tools
1School of Mechanical Engineering, Soongsil University, 369 Sangdo-Ro, Dongak-gu, Seoul, Korea
ABSTRACT
This study presents mechanical machining of cemented carbide (WC-Co) using EDMed polycrystalline diamond (PCD) tools. Since the hardness of PCD is higher than that of cemented carbide, micro holes and micro 3D structures can be fabricated on cemented carbide by micro PCD tools. Micro tools of dia. 50 µm were fabricated by wire electrical discharge grinding (WEDG) and then were used in micro drilling and milling. In micro drilling, we investigated the effect of feedrate on the cutting force. Since the PCD surface machined by EDM is rough, it can be used as a pencil grinding tool in micro grinding. Using the PCD micro tools, micro holes and walls were machined without burr or crack.
Keywords: Micro machining, EDM, Cemented carbide, Polycrystalline diamond
1School of Mechanical Engineering, Soongsil University, 369 Sangdo-Ro, Dongak-gu, Seoul, Korea
ABSTRACT
This study presents mechanical machining of cemented carbide (WC-Co) using EDMed polycrystalline diamond (PCD) tools. Since the hardness of PCD is higher than that of cemented carbide, micro holes and micro 3D structures can be fabricated on cemented carbide by micro PCD tools. Micro tools of dia. 50 µm were fabricated by wire electrical discharge grinding (WEDG) and then were used in micro drilling and milling. In micro drilling, we investigated the effect of feedrate on the cutting force. Since the PCD surface machined by EDM is rough, it can be used as a pencil grinding tool in micro grinding. Using the PCD micro tools, micro holes and walls were machined without burr or crack.
Keywords: Micro machining, EDM, Cemented carbide, Polycrystalline diamond
