Research on ECM process of micro holes with internal features

Liu, Guodong; Li, Yong; Kong, Quancun; Tong, Hao

doi:10.1016/j.precisioneng.2016.10.006

Cited by 28 publications

(14 citation statements)

References 16 publications

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“…Micromachines 2020, 11,118 3 of 17 many advantages such as the standardization, seriation, high precision, and low cost. Thus, it is thought that using micro helical electrode combining with the jetting electrolyte is a much simpler and lower-cost way to improve the machining stability and accuracy in the EMM of micro hole.…”

Section: Experimental Setup and Detailsmentioning

confidence: 99%

“…The electrolyte is jetted to the entrance of micro hole by a needle tube with the flow rate of 30 mL/min whose internal diameter is 410 μm. When using the jetting electrolyte, the workpiece is not immersed in the electrolyte and Micromachines 2020, 11,118 3 of 17 many advantages such as the standardization, seriation, high precision, and low cost. Thus, it is thought that using micro helical electrode combining with the jetting electrolyte is a much simpler and lower-cost way to improve the machining stability and accuracy in the EMM of micro hole.…”

Section: Experimental Setup and Detailsmentioning

confidence: 99%

“…Micromachines 2020, 11,118 13 of 17 accuracy and quality is significantly improved in the EMM of micro through-hole, demonstrating that using a micro drill combined with the jetting electrolyte is a much simpler and lower-cost way to improve the machining stability and accuracy in the EMM of micro through-hole.…”

Section: Fabrication Of Micro Through-hole With High Accuracy By Usinmentioning

confidence: 99%

“…[8,9]. Thus, nowadays, fabrication of micro holes on the parts with extremely hard and tough materials by EMM is attracting more and more researchers' attention [10,11]. However, EMM also faces many challenges in the machining of micro holes with high quality and precision.…”

Section: Introductionmentioning

confidence: 99%

“…Influence of pulse frequency on the inlet and outlet dimension of micro through-hole fabricated by using micro helical electrode coated with non-conductive mask.Micromachines 2020,11, 118 15 of 17…”

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confidence: 99%

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Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

et al. 2020

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The instability of machining process caused by the difficulty of the electrolyte refresh in electrochemical micromachining (EMM) of micro through-hole has been an unsolved problem. Thus, this paper investigates the electrochemical micromachining of micro through-hole by using a micro helical electrode combining with the jetting electrolyte. With the help of high-speed rotation of micro helical electrode and its spiral shape, the internal electrolyte can be stirred while the external jetting electrolyte can flow into the hole along the spiral groove to refresh the electrolyte effectively, thereby, improving the machining stability of EMM. Firstly, the influence of the process parameters on the fabrication of micro through-hole in the EMM by using micro helical electrode without non-conductive mask is investigated. Based on the optimization of the process parameters, a micro through-hole with an inlet dimension of 121.6 μm and an outlet dimension of 114.9 μm is obtained successfully. Furthermore, this paper also tries to use the micro helical electrode coated with the non-conductive mask to decrease the bad influence of the stray corrosion attack. It is found that the non-conductive mask coated on the surface of micro helical electrode can improve the machining accuracy significantly under the condition of low pulse frequency (≤1 KHz). However, its good effect on preventing the stray corrosion decreases along with the increase of the pulse frequency.

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Section: Experimental Setup and Detailsmentioning

confidence: 99%

Section: Experimental Setup and Detailsmentioning

confidence: 99%

Section: Fabrication Of Micro Through-hole With High Accuracy By Usinmentioning

confidence: 99%