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Experimental study on hybrid machining of laser irradiation and grinding for sharpening of a CVD diamond micro-milling tool

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Abstract

A hybrid sharpening and polishing method with nanosecond pulse laser irradiation and precise grinding, which can evidently increase the material removal rate and improve cutting edge quality, is presented in this paper. For laser processing, the trend of diamond graphitization under different laser fluence is explored and its mechanism is thoroughly discussed. For the grinding process, the Taguchi method and gray relational analysis are conducted to optimize the parameters and to compare the cutting edge achieved by the hybrid machining with that achieved by conventional grinding. The smallest cutting edge radius we got is 1.957 μm, less than that achieved by conventional grinding methods. Moreover, the process of this method is found to be more stable than the conventional grinding, resulting in a crackless cutting edge. This phenomenon can be attributed to the defect left on the diamond surface after laser ablation, which increases the grindability of the surface layer. In comparison with the conventional grinding method, the advantages of this hybrid machining are demonstrated both in efficiency and in machining quality.

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Funding

This project was sponsored by the National Natural Science Foundation of China (grant nos. 51575268 and 51705249) and the Foundation of Innovative Free Exploration Project of NUAA for Undergraduates (grant nos. ZT2016042).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, Nanjing, 210016, China

    Kaihua Yang, Yi Xia, Liang Li, Ning He, Yu Zhang & Tianchun Zhang

Authors
  1. Kaihua Yang
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  2. Yi Xia
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  3. Liang Li
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  4. Ning He
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  5. Yu Zhang
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  6. Tianchun Zhang
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  7. Yuqi Wang
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Corresponding author

Correspondence to Liang Li.

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Yang, K., Xia, Y., Li, L. et al. Experimental study on hybrid machining of laser irradiation and grinding for sharpening of a CVD diamond micro-milling tool. Int J Adv Manuf Technol 96, 327–336 (2018). https://doi.org/10.1007/s00170-018-1624-7

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  • DOI: https://doi.org/10.1007/s00170-018-1624-7

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