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Flexible stratification method based on constant cutting force for machining blade surfaces

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Abstract

During milling of free-form surfaces, cutting force varies due to the variation of workpiece surface curvature, which can seriously affect machining quality. In this study, a layered strategy was proposed for flexible machining of complex parts with variable curvatures. By taking a blade as the research object, we first considered a constant cutting force as the starting point. The relationship between the machining allowance and the radius of curvature of the workpiece under a certain cutting force was established. By analyzing the curvature of each position of the blade, a reasonable cutting allowance was set for each layer and the machining process was carried out layer by layer, such that a stable cutting force was maintained on the workpiece surface during machining of each layer. Second, the blade surface deformation law was determined by using the T-spline surface characteristics and an improved offset algorithm, and a series of deformation surfaces was obtained. Finally, the feasibility of the proposed method was verified by using finite element simulations and validated by experiment, and the advantages of the proposed method were verified by comparison with the existing main blade processing methods.

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Funding

This work was supported by the National Science and Technology Major Project on CNC Machine tool, China (Grant No. 2019ZX04001001) and National Natural Science Foundation of China (Grant 51975019).

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Authors and Affiliations

  1. Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing, 100124, China

    Liu Zhi feng, Zhao Peng rui, Li Zhi xiong, Cao Zi rui & Su Li hang

  2. Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, 100124, China

    Liu Zhi feng & Zhao Peng rui

  3. Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, Beijing University of Technology, Beijing, 100124, China

    Li Zhi xiong, Cao Zi rui & Su Li hang

Authors
  1. Liu Zhi feng
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  2. Zhao Peng rui
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  3. Li Zhi xiong
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  4. Cao Zi rui
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  5. Su Li hang
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Correspondence to Liu Zhi feng.

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The authors declare that they have no competing interests.

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Author contributions

Liu and Zhao conceived and designed the study. Li, Cao and Su performed the experiments. Zhao conducted a data analysis. Liu and Zhao wrote the paper. Liu, Zhao, Li, Cao, and Su reviewed and edited the manuscript. All authors read and approved the manuscript.

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The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

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feng, L.Z., rui, Z.P., xiong, L.Z. et al. Flexible stratification method based on constant cutting force for machining blade surfaces. Int J Adv Manuf Technol 120, 159–172 (2022). https://doi.org/10.1007/s00170-020-06551-9

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  • DOI: https://doi.org/10.1007/s00170-020-06551-9

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