著者

樋口 俊郎 古谷 克司 山形 豊 武田 幸三

出版者

公益社団法人精密工学会

雑誌

精密工学会誌 (ISSN:09120289)

巻号頁・発行日

vol.58, no.3, pp.501-506, 1992-03-05

被引用文献数

3

---

A pocket-size electro-discharge machine of which electrode-feeding is done by using two piezoelectric elements has been developed. One piezo makes inertial force for the Impact Drive Mechanism (IDM). The other piezo adjusts a gap length between an electrode and a workpiece, or forces an electrode to vibrate. To improve the machining performance of the pocket-size electro-discharge machine, forced vibration of an electrode (Vibration method) and the electrode-feeding with fine step of 10 nm (Interpolation method) are examined by using the additional piezo. By the vibration method, the machining time is decreased to 67 % of that without the additional piezo. By the interpolation method, which can make the resolution of the precise positioning mechanism utilizing the IDM finer, the machining time is decreased to 74 %.

著者

ルスリ メイファル 古谷 克司

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

vol.2008, no.4, pp.247-248, 2008-08-02

---

Electrochemical discharge machining (ECDM) is one of nontraditional processes for micro-fabrication of non-conductive materials. In this research, the effect of ultrasonic vibration in ECDM gravity-feed drilling of soda lime glass is investigated. The ultrasonic vibration is applied on a workpiece and affects ECDM in two ways; to change discharge behavior by influencing gas bubbles and gas film formation, and to improve electrolyte circulation. However, the discharge behavior by changing the gas bubbles and the gas film gives more dominant influence on machining result rather than the electrolyte circulation. It is found that the ultrasonic reduces material removal rate, but improves surface integrity of the hole.