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Tutorial - EDM

Date: 9-9-2015

Note:

i. Solve the following problems on EDM and submit the same before 5.00 pm today. Attendane will be

given only for those who submit this tutorial. !ou an refer our leture slides and Advaned mahining

proesses boo" by # $ %ain.

ii. Assume suitable value for any missing data.

& A through hole 'dia (&0mm) in a plate '5mm thi") is to be drilled using EDM. Estimate the time re*uired

for the proess. Assume +(50,- (&0 m/- #o( 00 #- #b(&50 #- $( 0.&1 to obtain M++ in mm23min.

& /or + iruit- ad4usted for maimum power delivery ondition the following data are available:

'i) +(50,- (5 m/ and supply voltage (65 volts alulate harging urrent and fre*ueny of disharge

when the iruit is losed.

'ii) A &0 mm dia hole is to be drilled in a 5 mm 7SS plate by EDM using + iruit. 8he re*uired surfae

finish is 0 9m. Determine speifiation of a apaitor to be used when supply and disharge voltages are

0 # and &50 # respetively. se resistane as 50, and value of the onstant as 0.;. Also- estimate time

re*uired to omplete the 4ob.

Tutorial - EDM

Date: 9-9-2015

Note:

i. Solve the following problems on EDM and submit the same before 5.00 pm today. Attendane will be

given only for those who submit this tutorial. !ou an refer our leture slides and Advaned mahining

proesses boo" by # $ %ain.

ii. Assume suitable value for any missing data.

A through hole 'dia (&0mm) in a plate '5mm thi") is to be drilled using EDM. Estimate the time re*uired

for the proess. Assume +(50,- (&0 m/- #o( 00 #- #b(&50 #- $( 0.&1 to obtain M++ in mm23min.

2 /or + iruit- ad4usted for maimum power delivery ondition the following data are available:

'i) +(50,- (5 m/ and supply voltage (65 volts alulate harging urrent and fre*ueny of disharge

when the iruit is losed.

'ii) A &0 mm dia hole is to be drilled in a 5 mm 7SS plate by EDM using + iruit. 8he re*uired surfae

finish is 0 9m. Determine speifiation of a apaitor to be used when supply and disharge voltages are

0 # and &50 # respetively. se resistane as 50, and value of the onstant as 0.;. Also- estimate time

re*uired to omplete the 4ob.