Form Characterization of Microhole Produced by Microelectrical Discharge Drilling

被引：16

作者：

Ali, Mohammad Yeakub ^{[1
]}

Hamad, Mohd Hosni ^{[1
]}

Karim, Ahmad Izwan ^{[1
]}

机构：

[1] Int Islamic Univ Malaysia, Fac Engn, Dept Mfg & Mat Engn, Kuala Lumpur 50728, Malaysia

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2009年 / 24卷 / 06期

关键词：

Aspect ratio; Beryllium copper; Characterization of microhole; Diameter enlargement; Electrode wear; Microdrilling; Microelectrical discharge drilling (micro-EDD); Microelectrical discharge machining (micro-EDM); Microhole; Microhole depth; Micromachining; Protherm; Roundness; Taper angle; Tungsten carbide; EDM; LASER; FABRICATION; SIMULATION; HOLES;

D O I：

10.1080/10426910902769343

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article discusses the characterization of form of microholes produced by microelectrical discharge drilling (micro-EDD) on beryllium-copper alloy using tungsten carbide electrode of 300m diameter. Using a fixed set of micro-EDD parameters, microholes of different aspect ratio were drilled. The selected form characteristics diameter, roundness, and taper angle were investigated. The hole diameter and roundness were estimated by using scanning electron microscope (SEM) and graphical calculation. The microhole was sectioned to measure the depth and taper angle. The variations of these form characteristics were plotted against aspect ratio. This experimental study showed that diameter, roundness error, and taper angle of the microhole increase with the increase of aspect ratio almost at the same rate. The electrode wear ratio was not insignificant for low aspect ratio microhole. However, it increased sharply with the increase of aspect ratio.

引用

页码：683 / 687

页数：5

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