A simple overview about electric discharge machining or EDM, a type of non-conventional machining

1. Electric Discharge
Machining.
EDM

2. What is
Non-Conventional Machining?
1.

3. “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.

4. Why do we need
Non-Conventional Machining?
2.

5. Types ofNon-conventionalMachining:-
 Abrasive Jet Machining.
 Electric Discharge Machining.
 Ultrasonic Machining.
 Water Jet Machining.
 Laser Beam Machining.
 Electrochemical Machining.

6. SoWhat is EDM?
EDM– ElectricDischargeMachining.
It is acontrolledmetal-removalprocessthatis used toremove metalby
means ofelectricsparkerosion.

7. Now from whereit actually
came??
Joseph Priestly
Phenomenon of
Electric Discharge
Studied
B. R. Lazarenko
Modern day Known EDM

8. WORKING PRINCIPLE:

9. Types of EDM :
Wire-cut EDM
Ram-sinker EDM

10. WIRE – C UT E DM

11. W I R E CUT EDM
Wire EDM
Flushingby Dielectric
Sparking takes place
Removalof thematerial

12. RAM/SINKER EDM

13. RAM/ SINKEREDM:
Ram / Sinker EDM
Ram EDM
Flushing by dielectric
Sparkerosion

14. ✘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
ADVANTAGESOF USING EDM

15. APPLICATIONS OFEDM:
✘EDMcanbeusedtomakefixtures,colletsandjetenginebladeslots.
✘Prototype production.
✘Coinage die making.
✘Small hole drilling.

16. ProductsbyEDM

17. thanks!
Any questions?