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?