Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore

Micro mechanical machining of cemented carbide using PCD tools

Dae Bo Sim1, Chan Young Yang1, Ju Hyeon Lee1, Ho Yoon Kim1 and Bo Hyun Kim1,a

1School of Mechanical Engineering, Soongsil University, 369 Sangdo-Ro, Dongak-gu, Seoul, Korea


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

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