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1. ELECTRIC
DISCHARGE
DIAMOND
GRINDING
Submittedby-ANIRUDH
THIRIVEEEDHI(232311002)
Guided by – Dr.LEELADHAR
NAGDEVE

2. I N T R O D U C T I O N

3. • Electric discharge diamond grinding is a machining process that combines
two key elements: electrical discharge machining (EDM) and Diamond
grinding.

4. • EDM is a “Non-traditional machining process “.

5. .
• It uses electrical discharges to remove material from a workpiece, and
diamond grinding involves using grinding wheels with diamond abrasive
particles for precision grinding.

6. Diagram of an Electric Discharge Diamond Grinding

7. working principle of eddg
Picture Source :Advances in Engineering Design,Select Proceedings of FLAME 2018

8. working principle of eddg
• The metal bond in the grinding
wheel is removed by electric
sparks.
• The Abrasive is used to grind the
workpiece.
• Electric Spark is generated for
localised melting and
vaporization
of workpiece material.
Picture Source :Advances in Engineering Design ,Select Proceedings of FLAME 2018

9. working principle of eddg
• The metal bond in the grinding
wheel is removed by electric
sparks.
• The Abrasive is used to grind the
workpiece.
• Electric Spark is generated for
localised melting and
vaporization
of workpiece material.
Picture Source :Advances in Engineering Design ,Select Proceedings of FLAME 2018

10. working principle of eddg
• The metal bond in the grinding
wheel is removed by electric
sparks.
• The Abrasive is used to grind the
workpiece.
• Electric Spark is generated for
localised melting and
vaporization
of workpiece material.
Picture Source :Advances in Engineering Design ,Select Proceedings of FLAME 2018

13. 1
Applications
It is used in Grinding Thin
Sections

14. 2
Applications
Grinding of High Hardness materials
such as Cermates , super alloys &
metal matrix composites.

15. Parameters used in EDDG
• WHEEL SPEED - Therotationspeedofthediamondgrindingwheelisessentialforcontrolling
thegrindingactionandmaterialremoval..

16. Parameters used in EDDG
• C U R R E N T - Itaffectsthesparkenergyandmaterialremovalrate.
Highercurrentsresultinmoreaggressivematerialremoval.

17. Parameters used in EDDG
• PULSE FREQUENCY–Itisthe rate at which electrical discharges occurs & affects MRR
and surface finish.

18. Parameters used in EDDG
• DIAMOND PARTICLE SIZE –Thesizeofthediamondparticleseffectsthesurfacefinishingof
thework piece.
Thesmallerthesizeofabrasiveitisbetterforhighsurfacefinish.

19. Referred from : RecentTrends in Non –Traditional machining processes by Raja P

20. Referred from : RecentTrends in Non –Traditional machining processes by Raja P

21. LITERATURE REVIEW
A combination of two machining processes (i.e., a hybrid process) has a potential to improve process performance.
The paper reports on experimental investigation of the electrical discharge diamond grinding process that combines
mechanical grinding with electrical discharge machining.
In this process, the workpiece is simultaneously subjected to heating, by electrical sparks bridging the gap between
the metallic wheel bonding material and the work, and abrasion by diamond grains.
The effect of current, voltage, pulse-on-time and duty factor on the grinding forces and the material removal rate
while machining high speed steel workpiece, are investigated.
The spark discharges facilitate grinding by thermally softening the work material in the grinding zone, and
consequently decreasing the normal force.
It is observed that the material removal rate increases with an increase in current and pulse on-time, while it
decreases with an increase in voltage and duty factor.
These independent parameters are also found to significantly influence the grinding forces.
ELECTRICAL DISCHARGE DIAMOND GRINDING OF HIGH SPEED STEEL
S. K. Choudhury, V. K. Jain &M. Gupta

22. References
"Electric Discharge Diamond Grinding of Polycrystalline Diamond"
1. Authors: T. Kuriyagawa, Y. Takezawa, and S. Kuroda.
2. Published in the Journal of Materials Processing Technology in 2002.
"Experimental Investigation of Electric Discharge Diamond Grinding of Polycrystalline Diamond
(PCD) Tool"
1. Authors: R. Srinivas, M. Pradeep Kumar, and V. K. Jain.
2. Published in the Procedia CIRP journal in 2014.
"A Study on Electric Discharge Diamond Grinding of Cemented Carbide"
1. Authors: Y. S. Tarng, C. M. Yan, and H. H. Shih.
2. Published in the International Journal of Machine Tools and Manufacture in 2006.
"Review on Electrical Discharge Diamond Grinding"
1. Authors: R. Ravi, B. Saravanan, and S. Kumarave.
2. Published in the Materials Today: Proceedings journal in 2018.
“Optimization of Electro-Discharge Diamond Surface Grinding Process Parameters with Multiple
Performance Characteristics of Ti-6Al-4V Using Grey-Taguchi Approach “
1. Authors : Manoj Modi & G.Aggarwal.
2. Published in the Research gate portal.