A Study on the Microchannel Machinability of Pyrex Glass by Using Electrochemical Discharge Machining

• Main Authors: Wei-Hsin Cheng, 鄭偉欣
• Other Authors: 顏炳華
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/95080296435987511224

碩士 === 國立中央大學 === 機械工程研究所 === 95 === Electrochemical discharge machining (ECDM) is demonstrated to be a potential process for 3D-microstructuring of Pyrex glass. However, it is difficult to obtain an accurate machining shape with a good surface quality because it is difficult to control the discharge characteristics near the tool tip. To improve the machining quality of the ECDM micromilling process, microgroove machining experiments were conducted in this study. Three factors affecting ECDM micromillimg performance, pulse voltage, rotational rate of tool and feed velocity of tool were taken up as machining parameters to investigate their influences on machining performance. The results indicate that optimum combinations of both pulse voltage (40V, Ton：Toff = 2 ms：2 ms) and rotational speed (1500 rpm) will realize better machining accuracy. The feasibility of 3-dimensional microstructure machining was demonstrated by a layer-by-layer ECDM micromilling machining. Complex structures were made to demonstrate the great potential for the 3D microstructuring of Pyrex glass of the ECDM micromilling process.