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

页码：547 / 553

页数：7