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Adaptive feedrate interpolation with multiconstraints for five-axis parametric toolpath

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Abstract

A good adaptive feedrate will be helpful for improving machining accuracy and efficiency, as well as avoiding the excess of the machine’s physical capabilities and feed fluctuations during machining. Therefore, it is highly desirable to consider the constraints of geometric error, cutting performance, and drive constraints in the feedrate scheduling of the parametric curve interpolator for five-axis computer numerical control machining. In this paper, a novel multiconstraints feedrate scheduling method is proposed for the parametric curve interpolator in five-axis machining. In the method, the feed optimization model is first built with the constraints of geometric error, the maximum feedrate and acceleration of cutter tip, and the maximum feedrate and acceleration of five-drive axes. Then, the relations between each constraint and the cutter tip feedrate are derived by means of near arc length parameterization. After that, a linear programming algorithm is applied to obtain the optimal feed profile on the sampling positions of the given tool path. Finally, illustrated examples are given to validate the feasibility and applicability of the proposed feedrate scheduling method. The comparison results show that the proposed method has an ability of the simultaneous guarantees of geometric accuracy, cutting performance, and drive characters of machine tools.

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Authors and Affiliations

  1. Key Laboratory for Precision and Non-Traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, China

    Jianfeng Zhou, Yuwen Sun & Dongming Guo

Authors
  1. Jianfeng Zhou
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  2. Yuwen Sun
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  3. Dongming Guo
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Correspondence to Jianfeng Zhou.

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Zhou, J., Sun, Y. & Guo, D. Adaptive feedrate interpolation with multiconstraints for five-axis parametric toolpath. Int J Adv Manuf Technol 71, 1873–1882 (2014). https://doi.org/10.1007/s00170-014-5635-8

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  • DOI: https://doi.org/10.1007/s00170-014-5635-8

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