Abstract
Unconventional technology of wire electrical discharge machining (WEDM) is essential in manufacturing precise parts for the aviation, automotive military or medical industry. Precision of dimensions and shapes of machined parts is preserved because of the ability to machine the material after the final heat treatment. However efficient and precise machining also depends on the ability to manufacture as small radiuses as possible, which can be achieved by minimizing the width of kerf. To minimize the width of kerf “Half central composite response surface design” plan of experiment considering gap voltage, pulse on time, pulse off time, wire feed and discharge current was implemented. Measurement system analysis (MSA) was computed for the width of kerf measuring system and based on its results mathematical model of the average width of kerf was found. Optimal setting of statistically significant machine parameters to minimize the average with of kerf was deducted from this model.
Keywords
- WEDM
- Electrical discharge machining
- Design of experiment
- Measurement system analysis
- Aluminum alloy
- Width of kerf
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Acknowledgements
This work is an output of research and scientific activities of NETME Centre, supported through project NETME CENTRE PLUS (LO1202) by financial means from the Ministry of Education, Youth and Sports under the “National Sustainability Programme I”.
This research has been financially supported from projects no. FEKT-S-17-3934 and FEKT/STI-J-18-5354.
This paper was supported by BUT, Faculty of Mechanical Engineering, Brno, Specific research 2016, with the grant “Research of modern production technologies for specific applications”, FSI-S-16-3717 and technical support of Intemac Solutions, Ltd., Kurim.
Part of the work was carried out with the support of CEITEC Nano Research Infrastructure (MEYS CR, 2016–2019).
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Hrabec, P., Bednář, J., Zahradníček, R., Prokeš, T., Machova, A. (2021). Statistical Analysis of the Width of Kerf Affecting the Manufacture of Minimal Inner Radius. In: Matoušek, R., Kůdela, J. (eds) Recent Advances in Soft Computing and Cybernetics. Studies in Fuzziness and Soft Computing, vol 403. Springer, Cham. https://doi.org/10.1007/978-3-030-61659-5_8
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