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Helical milling of CFRP/Ti-6Al-4V stacks with varying machining parameters

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Abstract

The hole-making process in stack materials consisting of carbon fiber reinforced plastics (CFRP) and Ti-6Al-4V remains a critical challenge. In this paper, an experimental study on the helical milling of CFRP/Ti-6Al-4V stacks was conducted by using two different machining strategies. Helical milling strategy I machines both materials with identical machining parameters, while machining strategy II uses two sets of machining parameters to machine each material. Helical milling performance was evaluated by the following indicators: tool life, cutting forces, hole quality (including diameter deviation, roundness, roughness, and hole edge quality). The results demonstrate that helical milling strategy II outperformed strategy I, leading to longer tool life (up to 48 holes), smaller cutting forces and better hole quality with higher geometric accuracy and smoother surface finish (Ra⩽ 0.58 μm for Ti-6Al-4V and Ra ⩽ 0.81 μm for CFRP), eliminating the need for reaming or de-burring.

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Authors and Affiliations

  1. Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, 300072, China

    Gaiyun He  (何改云), Hao Li  (李 皓), Yuedong Jiang  (江跃东), Xuda Qin  (秦旭达), Xinpei Zhang  (张心沛) & Yi Guan  (关 毅)

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  1. Gaiyun He  (何改云)
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  2. Hao Li  (李 皓)
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  3. Yuedong Jiang  (江跃东)
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  4. Xuda Qin  (秦旭达)
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  5. Xinpei Zhang  (张心沛)
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  6. Yi Guan  (关 毅)
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Corresponding author

Correspondence to Xuda Qin  (秦旭达).

Additional information

Supported by Key Laboratory for Advanced Manufacturing Technology and Cutting Tools of the Education Department of Heilongjiang Province, National Natural Science Foundation of China (No. 51275345), National NC Science and Technology Major Projects (No. 2014ZX04001081), National Engineering and Research Center for Commercial Aircraft Manufacturing (No. SAMC13-JS-15-030).

He Gaiyun, born in 1965, female, Dr, Prof.

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He, G., Li, H., Jiang, Y. et al. Helical milling of CFRP/Ti-6Al-4V stacks with varying machining parameters. Trans. Tianjin Univ. 21, 56–63 (2015). https://doi.org/10.1007/s12209-015-2360-9

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  • DOI: https://doi.org/10.1007/s12209-015-2360-9

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