Ultra-fine grooving technology with high aspect ratio for cemented carbide by PCD (poly-crystalline diamond) blade

被引：5
作者：
Fujita, Takashi [1 ]
Izumi, Yasuo [2 ]
Watanabe, Junji [3 ]
机构：
[1] Tokyo Seimitsu Co Ltd, Technol Strategy Dept, 2968-2 Ishikawa Machi, Hachioji, Tokyo 1928515, Japan
[2] Shin Nihon Tech Inc, 2-2-81 Hama,Tsurumi Ward, Osaka 5380035, Japan
[3] Kumamoto Univ, Osaka Off, 1-4-1 Aramotokita, Higashiosaka, Osaka 5770011, Japan
来源：
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2019年 / 55卷
关键词：
Cemented carbide; Ductile-mode grooving; Ultrafine grooving; Polycrystalline diamond (PCD); Ultrathin dicing blade;
D O I：
10.1016/j.precisioneng.2018.10.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel dicing technology with high rigidity and hardness was developed for difficult-to-cut materials such as cemented carbide. The highly precise and ultra-thin dicing blade of 20 pm thick and free of crack was manufactured from a round body of polycrystalline diamond (PCD) by an electrical discharge process and ultra-violet assisted polishing. The blade has continuous cutting edges made of crystal grain boundary of PCD. Therefore, fine grooves can be cut in the cemented carbide with ductile-mode. In addition, the autogenous cutting edge regeneration effect was confirmed by partly maintaining the roughness of cutting edge without blunting the PCD surface state. It is speculated that cemented carbide particles detached from the workpiece caused micro-cracks to regenerate the cutting edges on the PCD blade. Finally, it was demonstrated that ultra-fine grooves with high aspect ratio of 20 mu m width and 1 mm depth could be cut in a cemented carbide substrate, which has never been achieved in the past.
引用
收藏
页码：381 / 389
页数：9
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