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Design of hole matrix unit for high-precision batch hole making of acoustic lining assembly of aero-engine

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Abstract

Acoustic lining assemblies with millions of high-density array holes are key structures for high-performance and low-noise aero-engines. However, the material specificity, variable curvature shape structure, high-order number of holes, and small-sized hole spacing of acoustic lining assemblies pose great challenges to the hole-making technology. In this paper, in view of the machining requirements of millions of acoustic lining holes, a hole matrix unit design method for batch hole making is proposed. The optimal hole matrix unit dimension is calculated with the angle deviation of normal vector as the constraint by matching the structural features of the acoustic lining assembly, dividing and interpolating the hole-making surface, and solving the normal vector of the hole position. The experimental results show that the proposed hole matrix unit design method can effectively control the angle deviation of normal vector of the acoustic lining holes and ensure the processing accuracy of the holes.

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Funding

The work is supported by the National Natural Science Foundation of China (No.51975288).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Qinghong Gong & Liang Li

  2. AVIC Chengdu Aircraft Industry (Group) Co., Ltd, Chengdu, 610091, China

    Qinghong Gong, Pan Luo, Jie Chen, Xinman Yuan, Ke Ma & Zhiqin Hu

  3. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610000, China

    Xinman Yuan

Authors
  1. Qinghong Gong
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  2. Liang Li
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  6. Ke Ma
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Contributions

Qinghong Gong, conceptualization, investigation, methodology, formal analysis, and writing—original draft. Liang Li, conceptualization, funding acquisition, and supervision. Pan Luo, methodology and writing—review and editing. Jie Chen, investigation and visualization. Xinman Yuan, resources and project administration. Ke Ma, investigation. Zhiqin Hu, visualization.

Corresponding author

Correspondence to Xinman Yuan.

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Gong, Q., Li, L., Luo, P. et al. Design of hole matrix unit for high-precision batch hole making of acoustic lining assembly of aero-engine. Int J Adv Manuf Technol 124, 1863–1873 (2023). https://doi.org/10.1007/s00170-022-10595-4

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  • DOI: https://doi.org/10.1007/s00170-022-10595-4

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