NDLI: Research on Dry EDM Processing Performance With Two Kinds of Pulse Generator Modes

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Li, Liqing Fu, Yi Song, Yingjie
Copyright Year	2011
Abstract	Dry EDM (Electrical discharge machining in gas) is an innovative electrical discharge machining (EDM) method. The machining performances of dry EDM vary from that of the liquid medium due to the different physical properties of gases and liquids. The generator, a key component in an EDM machine tool, supplies electrical energy to ionize the dielectric, therefore generator mode plays important roles in EDM performance. In this work, experiments were conducted to study the machining performances of dry EDM with two generator modes: the iso-frequencial mode and the iso-pulse mode. Experimental results show that the material removal rate (MRR) and surface roughness (SR) value using the iso-frequencial mode are higher than that of the iso-pulse mode in dry EDM and reasons for the experimental phenomena were analyzed. Under the iso-pulse mode, MRR and SR present an approximately linear increase with an increase in the pulse width increase. The iso-frequencial mode could be used in the rough machining gauge and the iso-pulse mode might be used in finish machining. It is concluded that a high frequency and narrow pulse generator with a high opening voltage might be suitable for dry EDM under a certain conditions.
Sponsorship	Manufacturing Engineering Division
Starting Page	391
Ending Page	397
Page Count	7
File Format	PDF
ISBN	9780791844304
DOI	10.1115/MSEC2011-50161
Volume Number	ASME 2011 International Manufacturing Science and Engineering Conference, Volume 1
Conference Proceedings	ASME 2011 International Manufacturing Science and Engineering Conference
Language	English
Publisher Date	2011-06-13
Publisher Place	Corvallis, Oregon, USA
Access Restriction	Subscribed
Subject Keyword	Dry edm Iso-frequencial mode Iso-pulse mode Processing performance Generator Electrical discharge machining Generators
Content Type	Text
Resource Type	Article

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