Fabrication and cutting performance of cemented tungsten carbide micro-cutting tools

被引：80
作者：
Egashira, Kai [1 ]
Hosono, Shigeyuki [1 ]
Takemoto, Sho [1 ]
Masao, Yusuke [1 ]
机构：
[1] Kyoto Inst Technol, Dept Mech & Syst Engn, Sakyo Ward, Kyoto 6068585, Japan
来源：
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2011年 / 35卷 / 04期
关键词：
Micro-cutting tool; Microdrilling; Micromilling; Cemented tungsten carbide; Tool life; EDM; Ultrasonic oscillation;
D O I：
10.1016/j.precisioneng.2011.06.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have developed cemented tungsten carbide (CTC) micro-cutting tools of 3 mu m diameter by electrical discharge machining (EDM). Microdrilling and micromilling were carried out using the developed tools, and their cutting performance was investigated. Cutting was performed in free-cutting brass plates. Ultrasonic oscillation was employed to lower the cutting resistance. As a result, holes and a slot of 3 mu m depth were successfully fabricated using tools made of CTC with 0.6 mu m grain size, indicating that successful cutting with 3 mu m-diameter tools was accomplished for the first time. Furthermore. CTC with 90 nm grain size was used as a tool material to improve the tool breakage resistance and tool form accuracy. The drilling performance of tools made of this ultrafine-grain-sized CTC was also investigated and found to exhibit a considerably improved average tool life. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码：547 / 553
页数：7
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