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Comparative study of conventional and micro WEDM based on machining of meso/micro sized spur gear

Ali, Mohammad Yeakub and Karim, A.N. Mustafizul and Adesta, Erry Yulian Triblas and Ismail, Ahmad Faris and Abdullah, 'Aisy Anuarin and Idris, Mohd Nazrol (2010) Comparative study of conventional and micro WEDM based on machining of meso/micro sized spur gear. International Journal of Precision Engineering and Manufacturing, 11 (5). pp. 779-784. ISSN 2005-4602 (O), 1229-8557 (P),

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Abstract

This paper discusses the comparison of micro machining process using conventional and micro wire electrical discharge machining (WEDM) for fabrication of miniaturized components. Seventeen toothed miniaturized spur gear of 3.5 and 1.2 mm outside diameter were fabricated by conventional and micro WEDM respectively. The process parameters for both conventional and micro WEDM were optimized by preliminary experiments and analysis. The gears were investigated for the quality of surface finish and dimensional accuracy which were used as the criteria for the process evaluation. An average surface roughness (Ra ) of 50 nm and dimensional accuracy of 0.1-1 μm were achieved in micro WEDM. Whenever applied conventional WEDM for meso/micro fabrication, a Ra surface roughness of 1.8 μm and dimensional accuracy of 2-3 μm were achieved. However, this level of surface roughness and dimensional accuracy are acceptable in many applications of micro engineering. A window of conventional WEDM consisting of low energy discharge parameters is identified for micromachining.

Item Type: Article (Journal)
Additional Information: 4751/2283
Uncontrolled Keywords: Micromachining, Micro WEDM, Conventional WEDM, Surface finish, Dimensional accuracy
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TS Manufactures
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User: Prof. Ir. Dr. Mohammad Yeakub Ali
Date Deposited: 16 Sep 2011 06:38
Last Modified: 12 May 2012 23:39
URI: http://irep.iium.edu.my/id/eprint/2283

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