Hi

I had some queries about EDM Machine...

1. How the parts are been aligned on EDM Machine & how Edges of the part are found ( like we do by edge finder in machining centre ).
I had a talk with 1 of my friend & he told that the electode has a a current & the side face of electrode is been touched on the part to be machined....but in some cases there are restrictions like the table size is 500 & the part size is 480 mm & the electrode's width is 100 mm....

Then in that machine will be overtravelled...that what has to be done in that case....


2. Also does that electric current ( in the electrode ) makes the electrode jerks ( or retracts back rapidly ) due to the presence of electric current.....I had seen some Mach3 videos & that's why i got that doubt in my mind....

If that is the thing that how the operator will get to know the exact position at which the edge ( or the retract point or jerk ) was found....Are the controls on EDM designed so that it automatically registers an G54 ( X & Y locations offset ).....just like Macro.


Please correct me if i am missing something.

Ash