| An allowance allocation method based on dynamic approximation via online inspection data for deformation control of structural parts |
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| 作者姓名： | Xiaozhong HAO Yingguang LI Chong HUANG Mengqiu LI Changqing LIU Kai TANG |
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| 作者单位： | 1. National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics;2. Hong Kong University of Science and Technology |
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| 基金项目： | co-supported by the National Natural Science Foundation of China (No. 51775278)；;National Science Fund of China for Distinguished Young Scholars (No. 51925505)； |
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| 摘 要： | Deformation resulting from residual stress has been a significant issue in machining. As allowance allocation can directly impact the residual stress on part deformation, it is essential for deformation control. However, it is difficult to adjust allowance allocation by traditional simulation methods based on residual stress, as the residual stress cannot be accurately measured or predicted,and many unexpected factors during machining process cannot be simulated accurately. Different from tradit...
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| 收稿时间： | 16 December 2019 |
An allowance allocation method based on dynamic approximation via online inspection data for deformation control of structural parts |
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| Xiaozhong HAO,Yingguang LI,Chong HUANG,Mengqiu LI,Changqing LIU,Kai TANG.An allowance allocation method based on dynamic approximation via online inspection data for deformation control of structural parts[J].Chinese Journal of Aeronautics,2020,33(12):3495-3508. |
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| Institution: | 1. National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China;2. Hong Kong University of Science and Technology, Hong Kong, China |
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| Abstract: | Deformation resulting from residual stress has been a significant issue in machining. As allowance allocation can directly impact the residual stress on part deformation, it is essential for deformation control. However, it is difficult to adjust allowance allocation by traditional simulation methods based on residual stress, as the residual stress cannot be accurately measured or predicted, and many unexpected factors during machining process cannot be simulated accurately. Different from traditional methods, this paper proposes an allowance allocation method based on dynamic approximation via online inspection data for deformation control of structural parts. An Autoregressive Integrated Moving Average (ARIMA) model for dynamic allowance allocation is established so as to approach the minimum deformation, which is based on the in-process deformation inspection data during the alternative machining process of upside and downside. The effectiveness of the method is verified both by simulation cases and real machining experiments of aircraft structural parts, and the results show that part deformation can be significantly reduced. |
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| Keywords: | ARIMA model Deformation control Deformation inspection data Machining allowance allocation Structural parts |
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