The precision micromassive forming of microgears was performed at different temperatures with the combination of wire electron discharge machining and precision forging. Microgear molds with 0.1-, 0.2-, and 0.4-mm modules and 12 teeth were fabricated with SODICK, AP250Ls, WEDM software, respectively, at a dimensional tolerance of ≤ 2.5 μm and surface roughness below 280 nm. The precision forging of microgears was investigated on T2 copper with the combination of simulation and experiment. The middle part was filled first, followed by the upper end and, finally, the bottom end. It was quite difficult to form microgears that meet the quality requirements at normal temperature. However, such a problem does not exist at 773 K, and the forming force required was only 36.4% as large as that at room temperature. Microgears formed with the high-temperature forging method exhibited high precision, and the dimensional tolerance was reduced from -38.8 μm of room temperature forging to + 0.9 μm, and the surface roughness was about 300 nm.
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References
M. Geiger, M. Kleiner, R. Eckstein, et al., “Microforming,” CIRP Ann.-Manuf. Techn., 50, No. 2, 445–462 (2001).
U. Engel and R. Eckstein, “Microforming – from basic research to its realization,” J. Mater. Process. Technol., 125–126, 35–44 (2002).
M. W. Fu and W. L. Chan, Micro-scaled Products Development via Microforming, Springer Berlin (2014).
M. W. Fu and W. L. Chan, “A review on the state-of-the-art microforming technologies,” Int. J. Adv. Manuf. Technol., 67, 2411–2437 (2013).
M. W. Fu, J. L. Wang, and A. M. Korsunsky, “A review of geometrical and microstructural size effects in micro-scale deformation processing of metallic alloy components,” Int. J. Mach. Tools Manuf., 109, 94–125 (2016).
M. H. Ghayesh, H. Farokhi, and M. Amabili, “Nonlinear behaviour of electrically actuated MEMS resonators,” Int. J. Eng. Sci., 71, 137–155 (2013).
K. Gupta, R. F. Laubscher, J. P. Davim, et al., “Recent developments in sustainable manufacturing of gears: A review,” J. Clean Prod., 112, No. 4, 3320–3330 (2016).
W. J. Kim and Y. K. Sa, “Micro-extrusion of ECAP processed magnesium alloy for production of high strength magnesium micro-gears,” Scripta Mater., 54, No. 7, 1391–1395 (2006).
M. S. Yeh, H. Y. Lin, H. T. Lin, et al., “Superplastic micro-forming with a fine grained Zn–22Al eutectoid alloy using hot embossing technology,” J. Mater. Process. Technol., 180, 17–22 (2006).
Y. Tang, W. K. Tan, J. Y. H. Fuh, et al., “Micro-mould fabrication for a micro-gear via vacuum casting,” J. Mater. Process. Technol., 192–193, 334–339 (2007).
M. S. Huang, C. J. Li, J. C. Yu, et al., “Robust parameter design of micro-injection molded gears using a LIGA-like fabricated mold insert,” J. Mater. Process. Technol., 209, 5690–5701 (2009).
B. Y. Tay, N. H. Loh, S. B. Tor, et al., “Characterisation of micro gears produced by micro powder injection moulding,” Powder Technol., 188, No. 3, 179–182 (2009).
J. Xu, L. Shi, C. X. Wang, et al., “Micro hot embossing of micro-array channels in ultrafine-grained pure aluminum using a silicon die,” J. Mater. Process. Technol., 225, 375–384 (2015).
J. Li, H. Liu, Z. Shen, et al., “Formability of micro-gears fabrication in laser dynamic flexible punching,” J. Mater. Process. Technol., 234, 131–142 (2016).
J. M. Zhong, X. Y. Wu, B. Xu, et al., “Laminated fabrication of micro-stepped gear mold based on WEDM and thermal diffusion welding,” Int. J. Adv. Manuf. Technol., 78, 1233–1240 (2015).
Y. K. Wang, X. Chen, Z. L. Wang, et al., “Fabrication of micro gear with intact tooth profile by micro wire electrical discharge machining,” J. Mater. Process. Technol., 252, 137–147 (2017).
X. Chen, Z. L. Wang, J. Xu, et al., “Sustainable production of micro gears combining micro reciprocated wire electrical discharge machining and precision forging,” J. Clean Prod., 188, 1–11 (2018).
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Translated from Problemy Prochnosti, No. 1, pp. 58 – 67, January – February, 2021.
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Yan, C., Chen, K.Z. & Gong, F. Precision Micromassive Forming of Microgears at Different Temperatures. Strength Mater 53, 55–64 (2021). https://doi.org/10.1007/s11223-021-00260-8
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DOI: https://doi.org/10.1007/s11223-021-00260-8