Mechanical Engineering Science

Study on Surface Roughness in Micro Milling of Single Crystal Materials

GaoQi, JinPo, GuoGuangyan

Abstract


Micro milling is a machining method of high precision and efficiency for micro components and features. In order to study the surface quality of single crystal materials in micro milling, the two-edged cemented carbide tool milling cutter with 0.4 mm diameter was used, and the orthogonal experiment was completed on the micro-milling of single crystal aluminum material. Through the analysis of statistical results, the primary and secondary factor which impacting on surface quality were found as follows: spindle speed, feed rate, milling depth. The ideal combination of optimized process parameters were obtained, when the spindle speed was 36000 r/min, the milling depth was 10 µm, the feed rate was 80µm/s, which made the milling surface roughness is 0.782 µm and minimal. Single crystal materials removal mechanism were revealed, and the influence of cutting parameters on micro-milling surface were discussed, the reason of tool wear was analyzed. Those provide a certain theoretical and experimental basis for micro milling of single crystal materials.

Keywords


Surface roughness; Micro milling; Single crystal materials; Orthogonal experiment

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References


Wang J , Gong Y , Shi J , et al. Surface roughness prediction in micro milling using neural networks and Taguchi’s design of experiments[C]. IEEE International Conference on Industrial Technology. IEEE, 2009. https://doi.org/10.1109/ICIT.2009.4939525

Gong Y D, Huang X J, Wen X L, et al. Experimental Research on Wear Mechanism of Micro-grinding Tool in Grinding Soda-Lime Glass[J]. Journal of Northeastern University, 2017, 38(8):1128-1132.

Kai E, Hosono S, Takemoto S, et al. Fabrication and cutting performance of cemented tungsten carbide micro-cutting tools[J]. Precision Engineering, 2011, 35(4):547-553. https://doi.org/10.1016/j.precisioneng.2011.06.002

Sun Z, To S. Effect of Machining Parameters and Tool Wear on Surface Uniformity in Micro-Milling[J]. Micromachines, 2018, 9(6):268-279. https://doi.org/10.3390/mi9060268

Dadgari A , Huo D , Swailes D . Investigation on tool wear and tool life prediction in micro-milling of Ti-6Al-4V[J]. Nanotechnology and Precision Engineering, 2018, 1(4):218-225. https://doi.org/10.1016/j.npe.2018.12.005

Saptaji K, Subbiah S, Dhupia J S, et al. Effect of side edge angle and effective rake angle on top burrs in micro-milling[J]. Precision Engineering, 2012, 36(3):444-450. https://doi.org/10.1016/j.precisioneng.2012.01.008

Gao Q , Chen X . Experimental research on micro-milling force of a single-crystal nickel-based superalloy[J]. The International Journal of Advanced Manufacturing Technology, 2019, 102(1-4):595-604. https://doi.org/10.1007/s00170-018-03211-x

Sato M, Yamazaki T, Shimizu, et al. A study on the microcutting of aluminum single crystals[J]. JSME International Journal Series III, 1991,34(4): 540-545. https://doi.org/10.1299/jsmec1988.34.540

Lucca D A, Seo Y W. Aspects of surface generation in orthogonal ultraprecision machining [J].CIRP Annals, 1994, 43:43-46. https://doi.org/10.1016/S0007-8506(07)62160-X

Damazo B N, Davies M A, Dutterer B S, Kennedy M D. A sµmmary of micro-milling studies[C]. First International Conference of the European Society for Precision Engineering and Nanotechnology, 1999(20):322-324.

Schaller T, Bohn L, Mayer J, Schubert K. Microstructure grooves with a width of less than 50µm cut with ground hard metal micro end mills. Precision Engineering[J], 1999(23): 229-235. https://doi.org/10.1016/S0141-6359(99)00011-2




DOI: https://doi.org/10.33142/me.v1i1.656

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Copyright (c) 2019 Qi Gao, Po Jin, Guangyan Guo

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