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A new method for deburring of servo valve core edge based on ultraprecision cutting with the designed monocrystalline diamond tool

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Abstract

Deburring of high-precision components to their micrometer features without any damage is very important but of great difficulty as the burr-to-functionality size ratio increases. To this end, this paper proposes a new deburring method in which the micro burr should be directly removed based on ultraprecision cutting with the designed monocrystalline diamond tool. To determine the feasibility of the proposed method, this paper applies it for deburring of the precision working edge of the servo valve core. Firstly, the monocrystalline diamond tool is carefully designed by covering a variety of topics like rake angle, clearance angle, edge radius. Then, the finite element (FE) simulation was conducted to characterize the deburring performance during the removal of the micro burr produced by the single abrasive grinding. Finally, an innovative self-designed deburring system was introduced and the deburring process was evaluated in terms of cutting forces, temperatures, tool wear mechanisms and deburring quality of the working edges by experiments. The FE simulation results indicate the suitability of the proposed deburring method. Meanwhile, the experimental findings agree well with simulation results and show that ultraprecision cutting with the specialized monocrystalline diamond tool could be successfully used for deburring of servo valve core edge without any damage. This work can provide technical guidance for similar engineering applications, and thus brings an increase to the machining efficiency for the manufacture of precision components.

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Acknowledgments

This work was supported by the National Key R&D Program of China (Grant No. 2018YFB2002200).

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Authors and Affiliations

  1. State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    QingLong An, JiaQiang Dang, GongYu Liu, DaPeng Dong, WeiWei Ming & Ming Chen

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  1. QingLong An
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  2. JiaQiang Dang
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  3. GongYu Liu
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  4. DaPeng Dong
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  5. WeiWei Ming
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  6. Ming Chen
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Correspondence to QingLong An.

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An, Q., Dang, J., Liu, G. et al. A new method for deburring of servo valve core edge based on ultraprecision cutting with the designed monocrystalline diamond tool. Sci. China Technol. Sci. 62, 1805–1815 (2019). https://doi.org/10.1007/s11431-019-9541-3

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  • DOI: https://doi.org/10.1007/s11431-019-9541-3

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