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Research on robot regrinding trajectory planning and surface characteristics of damaged blades

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Abstract  

Aeroengine blades are the power components most relevant to the energy conversion process. Due to the harsh working environment, the blades are seriously damaged after service, which affects their dynamic performance. The regrinding of damaged blades can extend their service life. However, the machining flexibility of the traditional grinding machine tool is insufficient to meet the needs of damaged blade repair, and the regrinding track of the blade cannot be directly generated by its theoretical geometric model. In order to solve the above problems, a robot regrinding scheme and trajectory planning method for damaged blades has been put forward. Based on the morphology measurement results of damaged blades, the point cloud reconstruction and regrinding trajectory research were carried out. The precision regrinding of damaged blades was realized. The comparison results of damaged blade morphology before and after regrinding indicate that the surface quality of the blade was improved significantly after regrinding. There are no obvious scratches, deep grooves, and large area adhesion on the repaired surface. The fractal dimension of the surface after regrinding is increased in different directions, which indicates that the surface structure characteristics after grinding are more fine. The average surface roughness of blades after robot regrinding is reduced from 2.67 to 1.59 μm. The profile error after robot regrinding is reduced from 0.35 to 0.16 mm. The research results provide a reference for the repair and manufacturing of blades.

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Funding

This work was supported by the National Key R&D Program of China (grant No.2019YFB1311100) and the National Natural Science Foundation of China (grant No. 51975053), and the Civil Aircraft Project (grant No.MJZ4-1N22), Inversion and Application Project of Outcome (grant Nos. D44F9A65 and 2B0188E1), and BIT Research and Innovation Promoting Project (grant No.2022YCXY003).

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Writing original draft preparation: SZ, FB. Conceptualization: LZ, WX. Methodology and software: DY, ZL. Writing—review and editing: LZ, ML, XS, DY. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Liang Zhiqiang.

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Zhipeng, S., Zhiqiang, L., Yuchao, D. et al. Research on robot regrinding trajectory planning and surface characteristics of damaged blades. Int J Adv Manuf Technol 130, 2743–2754 (2024). https://doi.org/10.1007/s00170-023-12819-7

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  • DOI: https://doi.org/10.1007/s00170-023-12819-7

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