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An efficient optimization method based on curvature feature for reducing tool path fluctuation

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Abstract

The sculptured surface has been widely used in aerospace and machinery manufacturing industries. CNC machining of sculptured surfaces is an important research area, and computation efficiency improvements are considered critical topics in this field. This paper presents a highly efficient method to generate smooth tool paths by establishing a mathematical model to describe the relationship between the relative curvature of sculptured surface and the machining strip width in five-axis machining. The method is improved from the middle-point error control method (MPECM) and the feasible tool position surface method (FTPSM), by changing the objective from the complete optimization for each drive point to the drive points’ interpolation. The drive point with the narrowest machining strip width and some sample points is selected to interpolate the remaining points. Both theoretical analysis and test examples show the correctness of the proposed method. Under the same condition, compared with the MPECM and the FTPSM, the computing time of the new method decreases to 10% at least. Besides, the fluctuation of the tool path is reduced. The machining examples verified the superiority of the proposed method.

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The authors confirm that the data supporting the findings of this study are available within the article.

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Funding

The reported work was supported by the Chinese National Science and Technology Major Project (under Grant No.2015ZX04001201), the Application Project of New Mode of Manufacturing Intelligence for the Ministry of Industry and Information Technology of China and the Collaborative Innovation Center for Advanced Aero-Engine(CICAAE).

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Authors and Affiliations

  1. School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, People’s Republic of China

    Ye Tian, ZhiTong Chen & Tao Ning

  2. Collaborative Innovation Center for Advanced Aero-Engine, Beihang University, Beijing, 100191, People’s Republic of China

    Ye Tian & ZhiTong Chen

Authors
  1. Ye Tian
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  2. ZhiTong Chen
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  3. Tao Ning
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Contributions

YT and ZC were responsible for the experimental work. TN and YT carried out the mathematical model. YT was responsible for completing the manuscript. ZC, NT, and YT were involved in the discussion and significantly contributed to the manuscript. All the authors approved the final manuscript.

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Correspondence to ZhiTong Chen.

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Tian, Y., Chen, Z. & Ning, T. An efficient optimization method based on curvature feature for reducing tool path fluctuation. Int J Adv Manuf Technol 117, 3431–3446 (2021). https://doi.org/10.1007/s00170-021-07209-w

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  • DOI: https://doi.org/10.1007/s00170-021-07209-w

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