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Wyszukujesz frazę "micro-electrical discharge machining" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Idea of the experimental stand for micro-electrical discharge machining using carbon fibres as the tool electrodes
    Autorzy:
    Trych, A.
    Markiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/100113.pdf
    Data publikacji:
    2012
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    micro-electrical discharge machining
    tool electrode
    carbon fibres
    Opis:
    The paper deals with the idea and design solutions for a special experimental stand and consequently a preliminary study of the future machine tool for micro-electrical discharge machining with carbon fibre as tool electrodes. The main requirements are introduced and, particularly for such purpose unusual conditions that must be assured are presented. Solutions that were used as well as some initial concepts are discussed and assessed. The paper is enriched with an extensive illustrative material of designed solutions for each important part responsible for the proper functioning of the respective components. The evaluation of existing solutions as well as the further issues that must be developed are analyzed.
    Źródło:
    Journal of Machine Engineering; 2012, 12, 2; 105-110
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-objective decision making for Z Coordinator and overcut in μ - EDM process using tungsten carbide electrode for machining of titanium alloy
    Autorzy:
    Nguyen, Phan-Huu
    Powiązania:
    https://bibliotekanauki.pl/articles/2052186.pdf
    Data publikacji:
    2022
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    micro-electrical discharge machining
    Z Co-Ordinate
    overcut
    TOPSIS
    Opis:
    Research on optimization of technological parameters in micro-EDM is very important, and especially results in multi-objective optimization problem. It led to improve machining performance like machining accuracy, reduced electrode wear and improved surface quality. Recent studies mainly refer to the quality indicators of machining productivity and electrode wear, besides that machining accuracy and surface quality are also very important indicators but published results about them is very limited. In this study, Z Co-Ordinate (Z) and overcut (OC) in micro-EDM using tungsten carbide (WC) electrode for Ti-6Al-4V were decided simultaneously by TOPSIS. Technological parameters which include Voltage (V), Capacitance (C) and Response surface methodology (RSM) were investigated in the presented research work. The results showed that the quality parameters Z and OC at optimal conditions were significantly improved. The surface quality behind the micro-EDM is also analyzed and evaluated, and it is good.
    Źródło:
    Journal of Machine Engineering; 2022, 22, 1; 138-149
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On Micromachining with a Focus on Miniature Gears by Non Conventional Processes. A Status Report
    Autorzy:
    Chaudhary, T.
    Siddiquee, A. N.
    Chanda, A. K.
    Khan, Z. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/139762.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wire electrical discharge machining
    WEDM
    electrochemical machining
    ECM
    micro-electrical discharge machining
    micro-EDM
    wycinanie elektroerozyjne
    obróbka elektrochemiczna
    mikroobróbka elektroerozyjna
    mikro-EDM
    Opis:
    Recent developments in automation and technology have revolutionized the way products are made. It is directly seen in the evolution of part miniaturization in the sectors such as aerospace, electronics, biomedicine and medical implants. Micromachining is a promising technology to fulfill the need of miniaturization. A review has been done on the micromachining processes such as micro electric discharge machining (micro-EDM) and wire EDM (WEDM), micro electrochemical machining (micro-ECM). Recent literature were studied and categorized in terms of materials, process parameters, performances, product manufactured, and miniature product generation. Starting with brief introduction to micromachining, classifications and applications, technical aspects of discussions from the literature have been presented on key factors such as parameters and the response variables. Important aspects of recast layer, heat effected zone, micro-hardness, micro cracks, residual stress, etc., have been given. A special focus is given to the status of the research on microgear manufacturing. Comparison has been made between other conventional process suitable for micro-gear manufacturing and WEDM. The miniature gear machined by WEDM shows the defect-free microstructure, better surface finish, thin recast layer and improved gear quality parameters such as profile and pitch. Finally, the research gaps and future research directions have been presented.
    Źródło:
    Archive of Mechanical Engineering; 2018, LXV, 1; 129-169
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Machining of microholes in Ti-6Al-4V by hybrid micro electrical discharge machining to improve process parameters and flushing properties
    Autorzy:
    Mugilan, T.
    Aezhisai Vallavi, M. S.
    Santhosh, S.
    Sugumar, D.
    Christopher Ezhil Singh, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/200937.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid micro electrical discharge machining
    Ti-6Al-4V
    fluid flow simulation
    material removal rate
    diametrical accuracy
    Opis:
    In this research work, the Ti-6Al-4V material was used for the investigation of machining parameters by means of hybrid micro electrical discharge machining to improve the machining process and reduce the negative effects of debris accumulation in the drilled hole. L9 orthogonal array was used in the Taguchi based grey relational analysis to optimize the parameters such as material removal rate and diametrical accuracy of the machining process for Ti-6Al-4V. This work encompasses the design, development, and calibration of the work piece vibration platform and experimental analysis of the process parameters by means of the hybrid micro electrical discharge machining process. The maximum material removal rate and minimum surface roughness was observed at the current value of 2.5 A, pulse on time is 2 μs and pulse off time is 14.5 μs. The maximum material removal rate was observed for the increase in pulse on time with 14.4 μs and 4 A current level. The diametrical accuracy of the microholes was increased while increasing the pulse off time and decreasing the pulse on time. The fluid flow simulation has been conducted to find out the pressure drop and to know the velocity of the flow inside the hole for the effective flushing of the debris during machining.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 565-573
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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