Effect of Machining Parameters on Hole Quality of Micro Drilling for Brass

Rahman, Azlan and Mamat, Azuddin and Wagiman, Abdullah (2009) Effect of Machining Parameters on Hole Quality of Micro Drilling for Brass. Modern Applied Science, 3 (5). pp. 221-230. ISSN 1913-1844, DOI https://doi.org/10.5539/mas.v3n5p221.

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Official URL: http://ccsenet.org/journal/index.php/mas/article/v...


This paper present the effect of drilling parameter such as spindle speed, feed rate and drilling tool size on material removal rate (MRR), surface roughness, dimensional accuracy and burr. In this work, a study on optimum drilling parameter for HSS drilling tool in micro-drilling processes in order to find the best drilling parameter for brass as a workpiece material. Micro drilling experiment with 0.5 mm to 1.0 mm drill sizes were performed by changing the spindle speed and feed at three different levels. The results were analyzed using microscope and surface roughness device. Comparatives analysis has been done between surface roughness, MRR and accuracy of drilled holes by experimentation. From the result, the surface roughness are mostly influenced by spindle speed and feed rate. As the spindle and feed rate increases, the surface roughness will decrease. The tool diameter gives less influence on the value of surface roughness. The value of MRR is decreased when the tool diameter, spindle speed and feedrate are decreases. As drilling tool diameter, feedrate and spindle speed increase the dimensional accuracy of drilled hole will decrease. The increment of spindle speed and feed rate value mostly will affect the tool wear and size of burr on the edge of drilled holes.

Item Type: Article
Uncontrolled Keywords: Micro drilling; Surface roughness; Material removal rate; Dimensional accuracy
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Jan 2015 06:06
Last Modified: 25 Oct 2018 07:23
URI: http://eprints.um.edu.my/id/eprint/11806

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