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Reverse Micro-EDM

  • Sachin Adinath MastudEmail author
Chapter
Part of the Materials Forming, Machining and Tribology book series (MFMT)

Abstract

Micro-EDM is an extensively used micromachining process to fabricate microcavities on metallic surfaces. Material erosion in micro-EDM is realized by imparting controlled sparks between electrodes submerged under the dielectric fluid. Recently, micromanufacturing is in demand and resulted in miniaturization of switches, screws, gears, shafts, and other mechanical components. High aspect ratio arrayed features are used as electrodes in micro-EDM and micro ECM processes, elements of MEMS, interface elements in biomedical devices for capturing neural signals, a source of plasma, etc. Existing micromanufacturing processes have limitations in machining of high aspect ratio arrayed features of different sections on metallic surfaces. Similarly, functional surfaces which can control friction, corrosion, wettability, and hemocompatibility are difficult to fabricate by existing micromachining processes. Reverse micro-EDM (R-MEDM) process has been originated from micro-EDM process. It reverse replicates the microcavities from electrode on workpiece. Intricate machining of features with high aspect ratio can be easily realized via R-MEDM process. Use of electrode vibration enables textured surface fabrication in R-MEDM. Electrode vibration provides pulsating movements to dielectric fluid and increases debris velocity which enhances process stability.

Keywords

Reverse micro-EDM Textured surfaces High aspect ratio structures Vibration-assisted R-MEDM 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringV.J.T.I.MumbaiIndia

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