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Electrode trajectory optimization for electrical discharge machining of two-dimensional curved and twisted channels

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Abstract

Closed curved and twisted channels are widely used in key parts of aerospace vehicles; however, they are difficult to process. Electrical discharge machining is a common method for machining curved and twisted channels of integral components. The electrode trajectory determines the machining quality and efficiency. We adopted a target evaluation function to distinguish between the local and global optima for an integral component with a long and narrow two-dimensional curved and twisted channel. In addition, we combined heuristic search and rapidly exploring random tree search to design and optimize the machining trajectory of the electrode. Finally, we conducted a comparative experiment between a preliminary design scheme and the proposed optimization method. The test results show that the machining efficiency and accuracy of the proposed method are higher than those of the preliminary design scheme. Furthermore, the machining trajectory generated by the proposed method satisfies the comprehensive requirements to produce two-dimensional curved and twisted channels.

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Funding

The authors acknowledge the financial support provided by the combined EDM Laboratory of Nanjing University of Aeronautics and Astronautics.

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Authors and Affiliations

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

    Yicong Qiu, Jianshe Zhao, Jianning Chen, Yiyu Wang & Minkai Gu

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  1. Yicong Qiu
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  2. Jianshe Zhao
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  3. Jianning Chen
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  4. Yiyu Wang
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  5. Minkai Gu
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Contributions

Yicong Qiu contributed significantly to analysis, performed the data analyses, and wrote the manuscript.

Jianshe Zhao contributed to the conception of the study.

Jianning Chen performed the experiment.

Yiyu Wang and Minkai Gu helped perform the analysis with constructive discussions.

Corresponding author

Correspondence to Jianshe Zhao.

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Qiu, Y., Zhao, J., Chen, J. et al. Electrode trajectory optimization for electrical discharge machining of two-dimensional curved and twisted channels. Int J Adv Manuf Technol 112, 1931–1940 (2021). https://doi.org/10.1007/s00170-020-06362-y

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  • DOI: https://doi.org/10.1007/s00170-020-06362-y

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