Feasibility of wear compensation in micro EDM milling based on discharge counting and discharge population characterization

Bissacco, Giuliano; Hansen, Hans Nørgaard; Tristo, G.; Valentinčič, Joško

doi:10.1016/j.cirp.2011.03.064

Cited by 52 publications

(21 citation statements)

References 11 publications

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“…It can be seen from this figure that percentage variation in AE is very small for both the processes, and hence, the discharge pulses could be considered as equally stable. A similar kind of histogram was studied by Bissacco et al [20] in order to observe the variation of AE with …”

Section: Histogram Of Pulsesmentioning

confidence: 99%

Evaluation of μEDM-drilling and μEDM-dressing performances based on online monitoring of discharge gap conditions

Nirala

Saha

2015

Int J Adv Manuf Technol

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Material removal in micro-electro-discharge machining (μEDM) is subjected to electrical breakdown within the dynamic discharge gap. The nature (shape, size, and frequency) of the waveforms (voltage and current) in the discharge gap of μEDM is unpredictable resulting in nonisoenergetic pulses. The effect of these uncertainties in the nature of the pulses with respect to machining progress is analyzed at various responses such as pulse frequency, pulse density, material removal rate, and volume removal per discharge. Analysis highlights the performances in terms of stability of the processes. The responses include both online and offline quantities which are monitored at different instances (segment depth) using a developed pulse discriminating system. These responses, anticipated to be non-identical among the μEDM variants (μEDM-drilling and μEDM-dressing), are the center of interest for this study. This anticipation arose due to different tool-work orientations, polarity, and dielectric behavior in debris removal between the variants. On comparing the process stability of these two μEDM variants in terms of the aforementioned responses, the μEDM-dressing is found to be more stable.

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Section: Histogram Of Pulsesmentioning

confidence: 99%

Evaluation of μEDM-drilling and μEDM-dressing performances based on online monitoring of discharge gap conditions

Nirala

Saha

2015

Int J Adv Manuf Technol

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“…For example, Bissacco et al [9], while investigating the micro-EDM milling process, estimated the amount of discharges in order to carry out a real time wear compensation method based on the discharge population characterization. Similarly, Mahardika et al [10] estimated the number of discharges occurring during the process and presented an innovative model for the estimation of the total energy exchanged during the machining.…”

Section: Introductionmentioning

confidence: 99%

Estimating the energy repartition in micro electrical discharge machining

Bigot

D’Urso

Pernot

et al. 2016

Precision Engineering

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International audienceThis paper presents a new approach for the recording of the total quantity of energy exchanged during the micro electrical discharge machining (EDM) process. In particular, this approach allows for the estimation of the percentage of energy absorbed by the two electrodes (tool and workpiece) using a combination of theoretical models and experimental results, thanks to an advanced discharges measuring approach. An experimental campaign was executed on a Sarix SX200 micro-EDM machine with a tungsten carbide tool electrode. In particular, the process was analyzed for two different electrode shapes, a triangular and a rectangular based parallelepipeds, and two sets of machining parameters. After the execution of the experimental campaign it estimate the total amount of energy that occurred during the entire die sinking process. The energy effectively lost into the tool, into the workpiece and into the dielectric was estimated from the measurement of the volume of material actually removed both from the tool and from the workpiece. The preliminary results appears to fit those presented in the literature and the validity of several theoretical crater models was then assessed. The validation of the presented acquisition method could enable the use of information related to energy repartition in the simulation of the micro-EDM process

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“…Aligiri et al [62] employed an electro-thermal model to estimate material removal volume in real time during micro-EDM drilling; in this study, the compensation length of electrode wear was determined by comparing the estimated material removal volume with the targeted material removal volume. Bissacco et al [63] also proposed a new electrode wear compensation method for micro-EDM milling based on discharge counting and discharge population characterization. They found that electrode wear can be effectively compensated based on discharge counting without implementing a pulse discrimination system.…”

Section: Micro-edmmentioning

confidence: 99%

Recent advances in micro- and nano-machining technologies

Gao

Huang

2017

Front. Mech. Eng.

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Device miniaturization is an emerging advanced technology in the 21st century. The miniaturization of devices in different fields requires production of micro-and nano-scale components. The features of these components range from the sub-micron to a few hundred microns with high tolerance to many engineering materials. These fields mainly include optics, electronics, medicine, bio-technology, communications, and avionics. This paper reviewed the recent advances in micro-and nano-machining technologies, including micro-cutting, micro-electrical-discharge machining, laser micro-machining, and focused ion beam machining. The four machining technologies were also compared in terms of machining efficiency, workpiece materials being machined, minimum feature size, maximum aspect ratio, and surface finish.

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Feasibility of wear compensation in micro EDM milling based on discharge counting and discharge population characterization

Cited by 52 publications

References 11 publications

Evaluation of μEDM-drilling and μEDM-dressing performances based on online monitoring of discharge gap conditions

Evaluation of μEDM-drilling and μEDM-dressing performances based on online monitoring of discharge gap conditions

Estimating the energy repartition in micro electrical discharge machining

Recent advances in micro- and nano-machining technologies

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