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Study on robot automatic rounding for blade tip based on elastic grinding

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Abstract

In order to achieve automatic rounding for blade tip, the study was conducted on small radius rounding based on elastic grinding, and a method of robot automatic grinding for small radius fillets of blade tip was proposed. An elastic grinding wheel with polyester ammonia fiber as substrate material utilized the characteristics of elastic envelope deformation contact to grind sharp angles of blade tip to small radius fillets. Based on elastic contact theory and Preston removal theory, theoretical contact model and material removal model between grinding wheel and blade tip were established. Contact stress distribution and grinding removal amount were simulated by Abaqus software. Simulation result demonstrates that adaptive elastic contact deformation between grinding wheel and sharp angle of blade tip forms small surface envelope contact pattern and variable grinding removal amount, which can realize small radius fillet machining. Robot automatic rounding experiments for blade tip were conducted to verify feasibility and controllability of the machining method. Research results indicate that the elastic deformation of grinding wheel causes an arc-shaped contact stress distribution in contact area of blade tip and abrasive coated on substrate can achieve small radius fillet grinding. The combination of passive compliance formed by elastic grinding deformation and active force control is feasible to realize robot automatic rounding for small radius fillets, and the fillet radius can be controlled by changing grinding process parameters. Robot automatic rounding for blade tip is feasible, and machining process and accuracy are controllable and stable, which breaks through traditional manual sandpaper grinding method and provides a new small radius fillet processing method.

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Funding

This research work is supported by the key research projects of the Provincial Department of Education (No. LJKZZ20220036). All supports are gratefully acknowledged.

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Authors and Affiliations

  1. School of Mechanical Engineering, Shenyang Ligong University, Shenyang, 110159, China

    Fengjie Tian, Zijian Qi, Yanzhi Zhang & Ruilin Li

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  1. Fengjie Tian
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  2. Zijian Qi
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  3. Yanzhi Zhang
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  4. Ruilin Li
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Contributions

FT: conceptualization, supervision and manuscript revision. ZQ: experiments investigation, data curation and writing the original draft. YZ: theoretical model establishment and simulation. RL: sample measurement. All authors contributed to the research and writing of this paper.

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Correspondence to Fengjie Tian.

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Tian, F., Qi, Z., Zhang, Y. et al. Study on robot automatic rounding for blade tip based on elastic grinding. Int J Adv Manuf Technol 130, 3789–3804 (2024). https://doi.org/10.1007/s00170-023-12899-5

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  • DOI: https://doi.org/10.1007/s00170-023-12899-5

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