A Practical Introduction to Electric Discharge Machining, Or “Bearing Currents” in Bearings – Wha
Electric Discharge Machining
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Transcript of Electric Discharge Machining
Electric Discharge Machining.
EDM.
What is Non-Conventional
Machining?
1.
“Non-conventional Machining process is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical energy or combination of these energies but do not use a sharp cutting tools as it needs to be used for traditional manufacturing processes.
Why do we need Non-Conventional
Machining?
2.
Types of Non-conventional Machining :-
Abrasive Jet Machining.
Electric Discharge Machining.
Ultrasonic Machining.
Water Jet Machining.
Laser Beam Machining.
Electrochemical Machining.
So What is EDM?EDM – Electric Discharge Machining.
It is a controlled metal-removal process that is used to remove metal by means of electric spark erosion.
Now from where it actually came??
Joseph Priestly
Phenomenon of Electric Discharge Studied
1770 - 1943
B. R. Lazarenko
Modern day Known EDM
WORKING PRINCIPLE :
Types of EDM :
Wire-cut EDM
Ram-sinker EDM
WIRE – CUT EDM
W I R E CUT EDM
Wire EDM
Flushing by Dielectric
Sparking takes place
Removal of the material
RAM/SINKER EDM
RAM / SINKER EDM :
Ram / Sinker EDM
Ram EDM
Flushing by dielectric
Spark erosion
✘ Intricate & complex details are possible.
✘ Very high accuracy attainable
✘ Extremely hard material can be very easily machined.
✘ Precise control of surface finish.
✘ No cutting forces.
✘ Virtually no geometric limitations
ADVANTAGES OF USING EDM
APPLICATIONS OF EDM :✘ EDM can be used to make fixtures, collets and jet engine blade slots.
✘ Prototype production.
✘ Coinage die making.
✘ Small hole drilling.
Products by EDM
thanks!Any questions?