Process capabilities of Micro-EDM and its applications

Liu, Kun; Lauwers, Bert; Reynaerts, Dominiek

doi:10.1007/s00170-009-2056-1

Cited by 138 publications

(59 citation statements)

References 15 publications

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“…The equipped relaxation type generator and high precision positioning system makes it dedicate for the micro-scale machining [8]. The short discharge duration time (350-400 ns) and low discharge current (< 0.5 A) guarantees the small energy input for each pulse.…”

Section: Experimental Set-upmentioning

confidence: 99%

Ceramics machining methods

Putyra¹,

Podsiadło²,

Laszkiewicz-Łukasik³

et al. 2015

Mechanik

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The Electrical Discharge Machining (EDM) behaviour and machining properties of advanced engineering Si3N4-based ceramic composites Si3N4-TiN are investigated and discussed in this paper. Two types of EDM machining configurations, micro-EDM milling and die-sinking EDM, are employed in the investigation. Relaxation type of pulse is used, and the performances of EDM process in the form of material removal rate, tool wear and surface quality are studied. These tests result in a performance comparison and a discussion on the ceramic composites material removal mechanism. The feature of material removal mechanism is characterised as chemical decomposition of Si3N4 and TiN at elevated temperature rather than melting/evaporation. The generation of nitrogen gas bubbles leads to a porous and foamy top surface structure. Due to the ideal mechanical and physical property of Si3N4-TiN ceramic composites, an application example -a turbine impelleras a crucial component in a micro power generation system is manufactured with obtained knowledge in both machining configurations.

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Section: Experimental Set-upmentioning

confidence: 99%

Ceramics machining methods

Putyra¹,

Podsiadło²,

Laszkiewicz-Łukasik³

et al. 2015

Mechanik

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“…This technique allows treating tool steel to its full hardness prior EDM, hence avoid the problems of geometry distortion caused by material post treatment (1) . Recently, EDM becomes a common manufacturing method to fabricate parts especially in aerospace and automobile where production quantities are relatively low (2) , mould and die industries, and small and burr-free hole drilling (3) . This process also provides an efficient way to produce delicate parts which might not be feasible by traditional machining.…”

Section: Static Edm and Orbiting Edmmentioning

confidence: 99%

Novel Tool Design Method for Orbiting EDM -A 2nd Approach on Design Automation Developed in CAD-

Sriani

Aoyama

2010

JAMDSM

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Tool design for orbiting EDM process often encounters some difficulties to adjust for EDM orbit and machining overcut concurrently. In orbiting process, the tool sweeps out some extra volume due to the additional orbit motion. Hence, it is compulsory to adjust tool geometry based on the chosen orbit cycle to avoid dimension distortion on the final product. Currently, tool correction is done manually since there is no CAD package which provides a specific assistance to adjust the tool geometry for orbital motion. Therefore, design process becomes lengthy and more prone to error due to manual correction process. The authors have proposed a tool design principle for orbiting purposes. Presented in the paper is continuation of the previous work, which emphasizes an automation strategy of tool design developed inside CAD system. The tool is compensated automatically for overcut and EDM orbit, and checked for its validity. The developed CAD system has been tested for a few EDM applications with complex shapes and proven effective to cut tool design time and human-related failures which are commonly found during manual design processes. Experimental validation for a complex part was executed with a promising result.

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“…When the tool comes close enough to the workpiece, the dielectric medium that is initially non-conductive breaks down and becomes conductive and spark would be generated. The thermal energy released continuously and effectively removes the work-piece material by melting and evaporation [30][31][32]. The process is quite capable of machining intricate profiles from any electrical conductive material irrespective of its hardness and strength.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of metallic micro-components using hybrid soft lithography and micro-electrical discharge machining

Essa

Modica²,

Imbaby

et al. 2016

Int J Adv Manuf Technol

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In spite of significant improvements in micro-replication techniques, methods to fabricate well-defined net shape microstructures are still in a developing stage. Soft-lithography has the capability to manufacture complex micro-and nanostructures. Although it is considered a robust technique, a major limitation is related to the distortion encountered in the fabricated structures during the drying process. In the present work, a manufacturing technology has been developed that emerges the benefits of Soft-Lithography and Micro Electrical Discharge Machining (µ-EDM) to produce stainless steel precise micro-components for Microimplantable devices. The micro-parts produced by Soft-lithography were subsequently surface processed via µ-EDM in order to improve the surface quality. In addition to this, it was found that µ-EDM drastically improved the surface roughness of stainless steel microcomponents from Ra=3.4 µm to Ra =0.43 µm.

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Process capabilities of Micro-EDM and its applications

Cited by 138 publications

References 15 publications

Ceramics machining methods

Ceramics machining methods

Novel Tool Design Method for Orbiting EDM -A 2nd Approach on Design Automation Developed in CAD-

Manufacturing of metallic micro-components using hybrid soft lithography and micro-electrical discharge machining

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