An investigation on drilling micro holes in different processes using micro-EDM

Li, Yiquan; Hou, Wanwu; Xu, Jinkai; Yu, Huadong

doi:10.1109/icma.2016.7558747

Cited by 8 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They also achieved ±1.1 µm accuracy of array micro holes. Li et al [32] conducted a comparative study on three different shape electrodes of tungsten-carbide to fabricate a high-aspect-ratio microhole of 300 µm diameter on 0.91 mm thick SUS 304 by µ-SEM. The tool electrodes of the designed diameter for conducting ex-periments (i.e., five experiments) were prepared by wire-assisted spark-erosion-machining (WSEM) process.…”

Section: Review Of Previous Research Work On Drilling Deep Fine Holes...mentioning

confidence: 99%

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Chaubey

Gupta

2022

Micromachines

View full text Add to dashboard Cite

The increased demand for miniature components has drawn the attention of researchers, engineers, and industry users to manufacture precision micro and mesoholes on foils, sheets, and plates made from a variety of engineering materials. These days, micro-drilling is extensively being adopted as a fundamental operation in all kinds of smart manufacturing industries to make different types of microholes, such as through holes, blind holes, and taper holes on micro-parts and components. Drilled holes with a diameter of less than 1 mm are referred to as microholes, while drilled holes whose diameter ranges between 1 and 10 mm are known as mesoholes. Meso and microholes are commonly referred to as fine-holes. Modern or advanced drilling processes are mostly used to drill microholes from a variety of materials. This paper presents an extensive review of the previous research conducted on the drilling of fine holes (meso and micro size) by spark- erosion-based processes along with highlighting work and tool electrode materials, specifications of drilled holes, types of microholes (through or blind holes), process parameters, performance measures, and key findings. The paper aims to facilitate researchers and scholars by highlighting the capabilities of spark erosion machining, drilling, and its variants to fabricate miniature holes. The paper ends with a conclusion and future research directions to encourage further work in this area.

show abstract

Section: Review Of Previous Research Work On Drilling Deep Fine Holes...mentioning

confidence: 99%

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Chaubey

Gupta

2022

Micromachines

View full text Add to dashboard Cite

show abstract

“…For solutions that are far away from ideal solution, it is observed that the craters and debris machined are present in the rim of the hole. Also the presence of oxides leads to deterioration of the surface characteristics of the hole formed [25]. When it comes to ideal solution due to refinement in discharge and machining condition, the surface character-…”

Section: Microstructure Analysismentioning

confidence: 99%

Analysis of high aspect ratio small holes in rapid electrical discharge machining of superalloys using Taguchi and TOPSIS

Rajamanickam

Prasanna

Sastry

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The main aim of this paper is to perform high aspect ratio small holes using rapid electrical discharge machining (rapid-EDM) of superalloys, namely Ti-6Al-4V and Inconel 718 with the tool materials like brass tubes and copper tubes. For employing the above-said materials, the performance characteristics such as material removal rate (MRR), tool wear rate (TWR) and overcut (OC) have been studied. In these investigations, DOE-Taguchi's L9 orthogonal array has been utilized to build an experimental layout with the machining parameters such as current, on-time, off-time and capacitance. From the analysis, it is confirmed that there was a 40% increase in MRR, 282% decrease in TWR and 56% decrease in OC for rapid-EDM of Ti-6Al-4V material using the brass tubes than the copper tubes. Further, it is also validated that there is a 61% increase in MRR, 6% drop of TWR and 33% increase in OC for rapid-EDM of Inconel 718 material using brass tubes than the copper tubes. So, this comparative study has concluded that the machining of Ti-6Al-4V using brass tube has produced a maximum of MRR and minimum of TWR and OC. In Taguchi analysis, the individual effect of machining parameters on MRR, TWR and OC was studied. In addition, optimum combinations of machining parameters for MRR, TWR and OC were also discussed. Furthermore, multi-objective optimization was executed using TOPSIS to find good combination of machining parameters.

show abstract

“…Tseng, Kao, and Chang (2016) developed a real-time monitoring system for EDMM process which is capable of producing nano-silver particles in the form of debris and compared the particle size with the conventional EDM process. Li, Hou, Xu, and Yu (2016) investigated the micro-holes drilled by three different EDM drilling methods and found that better MRR and TWR is achieved for cutting edge electrodes. Wong, Rahman, Lim, Han, and Ravi (2003) analysed the material removal mechanism of EDMM process using single pulse discharges and stated that high efficiency was obtained at lower energy levels.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Where β i , i = 0, 1, 2… p, are called regression coefficients. This model describes a hyper plane in the p-dimensional space of the independent variables (Li et al, 2016). The parameter β i represents the expected change in response y per unit change in X i when all the remaining independent variables X j (j ≠ i) are held constant.…”

Section: Regression Analysismentioning

confidence: 99%

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Pilligrin

Asokan

Jerald

et al. 2017

Production & Manufacturing Research

View full text Add to dashboard Cite

This paper focuses on the issues of Resistor-Capacitor-based Electrical Discharge Micro-Machining process and investigates the effects of tool speed and polarity on the performance measures such as Tool Wear Rate, Material Removal Rate, Overcut and Taper Angle by drilling on 316L Stainless Steel. Taguchi's L54 mixed orthogonal array design is employed to conduct experiments by varying tool polarity at two levels and voltage, capacitance, spindle speed at three levels. The cause and effect relationship between the experimental factors and responses are analysed and discussed using Factorial Analysis of Variance technique. Optimum combinations of machining parameters are also evaluated using Taguchi-based Grey Relational Analysis, by considering grey relational grade matrix and influence of process parameters on the responses. Further, microscopic analysis is done to identify the micro-voids, globular formation, and cracks present on the surface of the hole produced under various machining conditions.

show abstract

An investigation on drilling micro holes in different processes using micro-EDM

Cited by 8 publications

References 8 publications

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Analysis of high aspect ratio small holes in rapid electrical discharge machining of superalloys using Taguchi and TOPSIS

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Contact Info

Product

Resources

About