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Analysis of accuracy of high-aspect-ratio holes generated using micro-electric discharge machining drilling

DSpace at IIT Bombay

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Title Analysis of accuracy of high-aspect-ratio holes generated using micro-electric discharge machining drilling
 
Creator PURANIK, MS
JOSHI, SS
 
Subject edm process
simulation
resistance
micromachining
micro-edm drilling
micro-holes
oversize
analysis of means (aom)
analysis of variance (anova)
taguchi methods
 
Description Micro-electric discharge machining (micro-EDM) has evolved as one of the prominent processes to generate high-aspect-ratio and accurate micro-structures in many industrial applications. This paper presents an extensive experimental analysis of the micro-EDM process to explore the relationship between accuracy as a function of depth of micro-holes drilled using micro-EDM drilling. It is shown that a depth of 5.0 mm can be achieved by a 200 mu m diameter tool electrode while controlling the regular process parameters, but beyond this length, the process is governed by a number of derived phenomena such as secondary sparking, debris accumulation, etc. instead of the regular processing parameters. The optimum depth of the hole that could be achieved with a good accuracy i.e. a minimum oversize lies between 2.5 and 5.0 mm, the largest depth that could be achieved was 8.33 mm. The highest aspect ratio achieved in this experiment was 15.63.
 
Publisher PROFESSIONAL ENGINEERING PUBLISHING LTD
 
Date 2011-08-27T07:43:16Z
2011-12-26T12:57:48Z
2011-12-27T05:45:20Z
2011-08-27T07:43:16Z
2011-12-26T12:57:48Z
2011-12-27T05:45:20Z
2008
 
Type Article
 
Identifier PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 222(11), 1453-1464
0954-4054
http://dx.doi.org/10.1243/09544054JEM1186
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11588
http://hdl.handle.net/10054/11588
 
Language en