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Accuracy Improvement and Precision Measurement on Micro-EDM

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Accuracy Enhancement Technologies for Micromachining Processes

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

Abstract

Micro electrical discharge machining (µEDM) is used for fabricating microstructures and micro components such as arrays of micro tools, micropillars, and complex three-dimensional shapes. These micro features are extensively used in the field of micro-electro-mechanical systems (MEMS), bio-MEMS, environmental and information technology, and so on. µEDM variants such as micro electrical discharge drilling (µED-drilling), reverse micro electrical discharge machining (R-µEDM), drilling with in situ fabricated tool, block micro electrical discharge grinding (B-µEDG), micro wire electrical discharge grinding (µWEDG), and micro electrical discharge milling (µED-milling) are equally contributing toward the fabrication of microscale parts and components. For the last few decades, researchers have mainly concentrated on the dimensional accuracy and precision measurement while fabricating microstructures for quantifying the response measures to determine the quality machining in micro level. Several factors such as machining parameters (electrical and non-electrical), tool and workpiece fixation, resolution, and repositioning capacity of the machine control dimensional accuracy and precision altogether. In addition, for machining the micro features, micro tools have been used. So, it is very important to study the tool wear because it directly affects the accuracy of micro features during machining. Tool wear cannot be completely avoided, but it can be minimized up to a significant level. Moreover, it can also be done using tool wear compensation. These errors are highly responsible for getting the inaccurate dimension of the microstructure. It is important to analyze the effect of each factor meticulously to achieve a precise and accurate dimension of micro components.

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Abbreviations

µEDM:

Micro electrical discharge machining

MEMS:

Micro-electro-mechanical systems

µED-drilling:

Micro electrical discharge drilling

R-µEDM:

Reverse micro electrical discharge machining

B-µEDG:

Block micro electrical discharge grinding

µWEDG:

Micro wire electrical discharge grinding

µED-milling:

Micro electrical discharge milling

LBM:

Laser beam machining

LIGA:

Lithography, Electroplating, and Molding

µUSM:

Micro ultrasonic machining

IBM:

Ion beam machining

µECM:

Micro electrochemical machining

µWEDM:

Wire electrical discharge machining

RC:

Resistance–capacitance

E RC :

Discharge energy per pulse in RC circuit

C :

Capacitance

V g :

Gap voltage

E T :

Discharge energy per pulse in transistor circuit

I p :

Current of a single pulse

V p :

Voltage of a single pulse

T on :

Pulse duration

T off :

Pulse interval

W i :

Initial weight of workpiece

W f :

Final weight of workpiece

h :

Depth of hole

IEG:

Interelectrode gap

TF:

Tangential feed

CCD:

Charge–coupled device

UWM:

Uniform wear method

MRR:

Material removal rate

TWR:

Tool wear rate

BSA:

Based on scanned area

HTF:

Horizontal tool feed rate

LT:

Layer thickness

TRS:

Tool rotational speed

LDCA:

Layer depth constrained algorithm

SCAA:

S-curve accelerating algorithm

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology Nagaland, Dimapur, 797103, Nagaland, India

    Amit Kumar Singh

  2. Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, 788010, Assam, India

    Siddhartha Kar & Promod Kumar Patowari

Authors
  1. Amit Kumar Singh
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  2. Siddhartha Kar
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  3. Promod Kumar Patowari
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Corresponding author

Correspondence to Promod Kumar Patowari .

Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, Aliah University, Kolkata, India

    Golam Kibria

  2. Department of Production Engineering, Jadavpur University, Kolkata, India

    B. Bhattacharyya

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Singh, A.K., Kar, S., Patowari, P.K. (2020). Accuracy Improvement and Precision Measurement on Micro-EDM. In: Kibria, G., Bhattacharyya, B. (eds) Accuracy Enhancement Technologies for Micromachining Processes. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-2117-1_3

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  • DOI: https://doi.org/10.1007/978-981-15-2117-1_3

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  • Online ISBN: 978-981-15-2117-1

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