Investigation of the Quality of Microholes Machined by µEDM Using Image Processing

Jafferson, J.M.; Hariharan, P.

doi:10.1080/10426914.2013.832302

Cited by 23 publications

(5 citation statements)

References 17 publications

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“…Micro EDM has a similar material removal process to the conventional EDM. It is an effective method to machine micro holes in metal, owing to its cutting force during the machining process is very small compared with traditional micro machining technologies [6]. However, micro EDM still cannot be used for mass production because of the uncontrollable discharging states and the difficult debris removal process [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Electrode Size on the Performances of Micro-EDM

Liu

Zhang

Zhu

et al. 2015

Materials and Manufacturing Processes

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Understanding the effect of processing parameters on the tool electrode wear during micro electrical discharge machining (Micro EDM) is helpful to predict and compensate the electrode wear, so as to improve the machining precision. In this paper, experiments are carried out and the influences of tool electrode diameter on the micro EDM process are discussed based on the skin effect and area effect. It is demonstrated that the machining speed, tool wear and taper rate are different with the increase of tool electrode diameter. Due to the skin effect and area effect, larger electrode diameter results in higher material removal rate along with higher tool wear rate. The electrode material removal increment is more than the workpiece material removal increment with the increase of tool electrode diameter, which leads to the increase of relative tool wear ratio. Discharge energy is concentrated on the tool surface which enhances the possibility of discharge on the side face and the corner of the tool electrode during the micro EDM, especially when drilling with a larger tool electrode. As a result, a tool electrode with larger diameter results in a higher taper rate.

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Section: Introductionmentioning

confidence: 99%

Effect of Electrode Size on the Performances of Micro-EDM

Liu

Zhang

Zhu

et al. 2015

Materials and Manufacturing Processes

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“…The machining of EDM reported that more micro lines will appear with high current [39]. The capability of EDM die sinker to produce micro holes using 80-140 V was also reported by Ja erson [40].…”

Section: Tribology For Concave Surfacementioning

confidence: 66%

Surface modification of biomaterial embedded with pits using die sinker machine

Razak

Syahrullail²,

Nuraliza

et al. 2017

Scientia Iranica

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Abstract. Surface modi cation has been applied in many ways to enhance exclusive implant product. Electrical Discharge Machine Die Sinker (EDM DS) is a new approach to machine a macro surface on the biomaterial. In this study, investigations of current properties of EDM DS to obtain a new surface in titanium alloy (Ti-6Al-4V) and stainless steel (E-316-L), which placed pit on the material-sized (25 mm) diameter sample with a radius of 6.3 mm, were conducted. All the samples of concave textured circular pits with a xed diameter and depth of 0.5 mm were successfully machined. This study revealed that the pits were produced in the concave cup and the lubricant was con ned inside the pits, making easier contact between metal ball and metal concave surface. The results also show that the discharge machine is an attractive machining method for surface modi cation of biomaterial. This paper suggests that concave implant surface embedded with pits will work as a trap for lubricant and wear debris; in addition, it is possible to increase the lifespan of implant structure.

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“…In combination with a high-precision micro tool electrode, micro EDM can be used to fabricate all kinds of functional materials with sub-micron precision [8]. Owing to the recent trend in reducing the sizes of products, micro EDM has drawn a significant amount of research attention [9,10].…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Effect of Crystallographic Anisotropy on Micro EDM Process

Liu

Zhang

et al. 2014

Materials and Manufacturing Processes

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In this paper, experiments are conducted by machining from different crystallographic orientations of monocrystalline silicon, and the effects of crystallographic orientation on the micro electrical discharge machining (EDM) process are discussed. The results demonstrate that the machining speed and surface roughness are varied when crystallographic orientation changes. The surface roughness is seen to vary by as much as twofold with crystallographic orientation, while the ratio between the maximum and minimum values of material removal rate is 1.76. The unique material removal mechanism of micro EDM enhances the effects of crystal anisotropy on micro electrical discharge machining process.

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Investigation of the Quality of Microholes Machined by µEDM Using Image Processing

Cited by 23 publications

References 17 publications

Effect of Electrode Size on the Performances of Micro-EDM

Effect of Electrode Size on the Performances of Micro-EDM

Surface modification of biomaterial embedded with pits using die sinker machine

Effect of Crystallographic Anisotropy on Micro EDM Process

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