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Path planning method for longitudinal micromarks on blisk root-fillet with belt grinding

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Abstract

The blisk root-fillet exhibits a significant stress concentration in high-load operations, which has a significant influence on fatigue life and aerodynamic performance. To improve the static and dynamic fatigue life of the blisk in the thermal interaction environment, a method based on the anti-fatigue manufacturing principle is introduced to obtain longitudinal micromarks along the root-fillet. First, this paper proposes a belt grinding method that can obtain longitudinal micromarks, and the interference avoidance technique is analysed according to the allowance distribution and structural characteristics of the blisk root-fillet. Second, optimisation of the grinding path step is realised by means of the ‘point to point’ method, and de-noising and smoothing of the grinding vector are carried out. Finally, grinding experiment tests are carried out for the blisk root-fillet. The results demonstrate that the surface roughness is less than 0.4 μm following grinding, and the transition between the plane and fillet (blade profile—root-fillet—tenon plane) is smooth. Moreover, fine and uniform longitudinal micromarks are formed and the precision consistency is significantly improved, which proves the effectiveness of this method.

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Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 51705047).

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Authors and Affiliations

  1. The State Key Laboratory of Mechanical Transmissions, Chongqing University, No. 174, Shazhengjie, Shapingba, Chongqing, 400044, China

    Guijian Xiao, Yun Huang & Jie Wang

Authors
  1. Guijian Xiao
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  2. Yun Huang
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  3. Jie Wang
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Corresponding author

Correspondence to Guijian Xiao.

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Xiao, G., Huang, Y. & Wang, J. Path planning method for longitudinal micromarks on blisk root-fillet with belt grinding. Int J Adv Manuf Technol 95, 797–810 (2018). https://doi.org/10.1007/s00170-017-1254-5

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  • DOI: https://doi.org/10.1007/s00170-017-1254-5

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