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Experimental research on the top burr formation in micro milling

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Abstract

The top burr is the common problem that faced in micro milling and presents the significant effect on the machining quality. The top burr minimization is desired to achieve high precision machining in micro milling. In this paper, the top burr formation mechanisms are analyzed, and then micro milling experiments are conducted to investigate the effect of machining parameters on the morphology and size of top burr. It is found that the top burr formation is caused by the unexpected material plastic side flow at the top side, which is an unresisted free surface with low support stiffness during micro milling. The unseparated chips that are connecting on the top side greatly increase top burr. The optimal machining strategies are suggested to minimize top burr.

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Acknowledgements

The authors thank Ke Sun and Kai Zeng for providing the experiment guidance.

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Funding

This work was supported by National Natural Science Foundation of China (51905182) and Fundamental Research Funds for the Central Universities (ZQN-805).

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Authors and Affiliations

  1. College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 361021, China

    Xian Wu, Mingyang Du, Jianyun Shen, Yuan Li & Li Liu

  2. Institute of Manufacturing Engineering, Huaqiao University, Xiamen, 361021, China

    Feng Jiang

Authors
  1. Xian Wu
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  2. Mingyang Du
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  3. Jianyun Shen
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  4. Feng Jiang
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  5. Yuan Li
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  6. Li Liu
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Correspondence to Xian Wu.

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Wu, X., Du, M., Shen, J. et al. Experimental research on the top burr formation in micro milling. Int J Adv Manuf Technol 117, 3477–3486 (2021). https://doi.org/10.1007/s00170-021-07916-4

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  • DOI: https://doi.org/10.1007/s00170-021-07916-4

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