Real-time data acquisition and discharge pulse analysis in controlled RC circuit based Micro-EDM

Nadda, Rahul; Nirala, Chandrakant K.

doi:10.1007/s00542-023-05432-x

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…μEDM requires a robust pulse discrimination system with some assured potential to discriminate the pulses. The controlled RC-based EDM method was studied by Raza et al [ [100] , [101] , [102] ] for various input variables, including real-time data acquisition, discharge gap, energy per discharge, and MRR. Real-time monitoring and compensating tool wear using a PDS has not been developed for the controlled RC-type power supply, making it a novel and unexplored research area.…”

Section: Online Tool Wear Compensationmentioning

confidence: 99%

An overview of techniques for monitoring and compensating tool wear in micro-electrical discharge machining

Nadda,

Nirala,

Singh

et al. 2024

Heliyon

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Section: Online Tool Wear Compensationmentioning

confidence: 99%

An overview of techniques for monitoring and compensating tool wear in micro-electrical discharge machining

Nadda,

Nirala,

Singh

et al. 2024

Heliyon

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“…The high-power density pulsed power supply outputs a waveform shape that simultaneously possesses the features of a narrow pulse width and steep rising edges. Currently, the commonly used RC relaxation pulsed power supply has a simple structure [23]. Although a high capacitive charging and discharging frequency facilitates a narrow pulse width and a high interelectrode discharge frequency, some drawbacks such as inconsistent discharge energy and irregular pulse widths are inevitable, making the simple RC type unsuitable for high-precision micro-hole machining.…”

Section: Introductionmentioning

confidence: 99%

Pulsed power supply of Tr-RC and Tr-RLC topologies for improvement of micro electrical discharge machining

Cao,

Li,

Tong

et al. 2024

J. Micromech. Microeng.

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Pulsed power supply is one of the key technologies in micro-electrical discharge machining (micro-EDM), particularly in machining micro-holes with high aspect ratios. Through the disadvantageous waveform feature analysis of the controllable RC pulsed power supply with random interpulse voltage, insufficient capacitor charging, and uncontrolled reversed fluctuations, an improved Tr-RC pulsed power supply with a promoted function is proposed. Discharge pulses with high power density have the potential to synchronously improve machining efficiency and accuracy. Increasing the discharge peak current by optimizing the pulsed-power topology is a feasible means of improving the power density. A pulsed power supply of the Tr-RLC topology introducing an inductor-controlled branch according to Faraday's law of electromagnetic induction was further proposed based on the improved Tr-RC pulsed power structure. The discharge waveforms of Tr-RLC pulsed power supply achieve an average peak current of 1.3 A with inductance of 20 μH, compared to 0.5 A with Tr-RC pulsed power supply. For machining micro-holes with aspect ratios of 10:1, 20:1, and 30:1, the Tr-RLC pulsed power supply exhibited an efficiency improvement of 25%, 22%, and 17%, respectively, with reduced taper error and a slight decrease in tool wear rate compared to the Tr-RC pulsed power supply.

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Microscale shaping and rounding of ridge arrays and star pattern features on nickel mould via electrochemical polishing

Zaki,

Zhang,

Gilchrist

2024

Adv. Manuf.

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Real-time data acquisition and discharge pulse analysis in controlled RC circuit based Micro-EDM

Cited by 7 publications

References 29 publications

An overview of techniques for monitoring and compensating tool wear in micro-electrical discharge machining

An overview of techniques for monitoring and compensating tool wear in micro-electrical discharge machining

Pulsed power supply of Tr-RC and Tr-RLC topologies for improvement of micro electrical discharge machining

Microscale shaping and rounding of ridge arrays and star pattern features on nickel mould via electrochemical polishing

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