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A part deformation control method via active pre-deformation based on online monitoring data

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Abstract

Pre-deformation of the workpiece in the elastic range is an effective deformation control method, as the machining deformation can be balanced by the pre-deformation. Different from the traditional pre-deformation control method based on experience or inaccurate prediction before machining, an innovative idea of online active pre-deformation control based on deformation monitoring data is proposed in this paper. The deformation monitoring data are used to analyze the workpiece state and predict the deformation of the next layer based on a cubic spline curve fitting approach, and then Kalman filter algorithm is used to control the error between the prediction deformation and the actual deformation so as to ensure the pre-deformation control accuracy. A real aircraft structural part is used to validate the proposed method, and the results show that the part deformation can be significantly reduced.

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Funding

The reported research was funded by the National Natural Science Foundation of China (Ref. 51775278), and the National Natural Science Foundation of China–Chinese Aerospace Science and Technology Corporation on Advanced Manufacturing (Ref: U1537209).

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Authors and Affiliations

  1. National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Xiaozhong Hao, Yingguang Li, Mengqiu Li & Changqing Liu

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  1. Xiaozhong Hao
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  2. Yingguang Li
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  3. Mengqiu Li
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  4. Changqing Liu
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Correspondence to Yingguang Li.

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Hao, X., Li, Y., Li, M. et al. A part deformation control method via active pre-deformation based on online monitoring data. Int J Adv Manuf Technol 104, 2681–2692 (2019). https://doi.org/10.1007/s00170-019-04127-w

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  • DOI: https://doi.org/10.1007/s00170-019-04127-w

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