Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Development of Superfinishing Machine to Polish the Inner Surfaces of Aircraft Hydraulic Oil Reservoirs

항공기 유압유 저장조 내면연마를 위한 슈퍼피니싱 장치 개발에 관한 연구

  • Choi, Su Hyun (Department of Mechanical Engineering, Changwon National University) ;
  • Kong, Kwang Ju (Ssangyong Motor Company LTD.) ;
  • Cho, Young Tae (Department of Mechanical Engineering, Changwon National University)
  • Received : 2020.04.28
  • Accepted : 2020.05.14
  • Published : 2020.08.31
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Abstract

Aircraft hydraulic oil reservoirs made with aluminum 7075 have an anodized coating to enable airtightness and corrosion resistance. To maintain a stable oil pressure, the internal surface roughness of the reservoir should be less than approximately 0.2 ㎛. To this end, precision polishing must be performed. However, ensuring the processing quality is challenging, as most polishing operations are performed manually, owing to which, the inner surface roughness is not uniform, and the product quality is irregular. Therefore, we developed a special superfinishing machine to realize the efficient inner polishing of an aircraft hydraulic oil reservoir, by using an abrasive film to improve the process throughput and uniformity. In the experiment involving the superfinishing of an anodized aluminum 7075 cylinder specimen by using the proposed machine, a higher surface roughness than that achieved in the repetitive manual polishing process could be realized.

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References

  1. Kim, J. S., Yu, H. S. and Park, D. K., "An Experimental Study on the Effect of Temperature and Humidity on the Pressure Change of the Bootstrap type Reservoir in the Aircraft," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 12, No. 5, pp. 170-175, 2012.
  2. Kim, W. B., Cho, Y. T. and Jung, Y. G., "Manufacturing Process Improvement for Precision Inner Surface Polishing of Anodizing Treated Airplane Reservoir," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 15, No. 2, pp. 72-77, 2016. https://doi.org/10.14775/ksmpe.2016.15.2.072
  3. Tsangaraki-Kaplanoglou, I., Theohari, S., Dimogerontakis, T., Wang, Y. M., Kuo, H. H. H. and Kia, S., "Effect of Alloy Types on the Anodizing Process of Aluminum," Surface and Coatings Technology, Vol. 200, No. 8, pp. 2634-2641, 2006. https://doi.org/10.1016/j.surfcoat.2005.07.065
  4. Jung, S. Y., Park, K. B., Jung, S. Y. and Jung, Y. G., "An Experimental Study on the Determination of Efficient Superfinishing Conditions using Polishing Film," Journal of the Korean Society for Precision Engineering, Vol. 26, No. 8, pp. 55-61, 2009.
  5. Lee, S. J., Choi, S. H., Cho, Y. T., Jung, J. Y. and Jung, Y. G., "Selection of the Efficient Superfinishing Condition on an Anodized Al7075 Surface in Experimental Design," Journal of the Korean Society for Precision Engineering, Vol. 33, No. 12, pp. 993-998, 2016. https://doi.org/10.7736/KSPE.2016.33.12.993
  6. Kim, S. K., Cho, Y. T. and Jung, Y. G., "Determination of Efficient Superfinishing Conditions for Mirror Surface Finishing of Engineering Ceramics," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 13, No. 5, pp. 76-81, 2014. https://doi.org/10.14775/ksmpe.2014.13.5.076
  7. Higuchi, M., Yamaguchi, T., Furushiro, N., Sugimoto, T., Shimada, S., Matsumori, N. and Ogura, H., "Development of Superabrasive Stone for Mechanochemical Superfinishing," Precision Engineering, Vol. 33, No. 1, pp. 65-70, 2009. https://doi.org/10.1016/j.precisioneng.2008.03.005
  8. Miura, K., Yamada, T., Takahashi, M. and Lee, H. S., "Application of Superfinishing to Curved Surfaces," In Key Engineering Materials, Vol. 581, pp. 241-246, 2014. https://doi.org/10.4028/www.scientific.net/KEM.581.241