Advances in Manufacturing ›› 2025, Vol. 13 ›› Issue (3): 584-605.doi: 10.1007/s40436-024-00520-1

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Allowance distribution and parameters optimization for high-performance machining of low rigidity parts in multistage machining processes

Hao Sun1,2, Sheng-Qiang Zhao1, Fang-Yu Peng1,2,3, Rong Yan1, Xiao-Wei Tang1   

  1. 1. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China;
    2. Wuhan Digital Design and Manufacturing Innovation Center Co. Ltd, Wuhan, 430074, People's Republic of China;
    3. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
  • Received:2023-11-30 Revised:2024-01-17 Published:2025-09-19
  • Supported by:
    This research was financially supported by the National Science and Technology Major Project of China (Grant No. J2019-VII-0001-0141), and the National Natural Science Foundation of China (Grant No. 92160301).

Abstract: There are a large number of low rigidity parts in the aerospace field, and how to achieve high-performance manufacturing in their multistage machining processes has received increasing attention. Optimizing the distribution of machining allowance and machining parameters is one of the most convenient ways to improve the machining performance of these parts. In this paper, firstly, considering the machining accuracy and machining efficiency comprehensively, the error efficiency cooperation coefficient of low rigidity parts during machining is established. Based on the semi-parametric regression theory and measured data, the machining error transfer factor within the cooperation coefficient is calibrated. Secondly, the machining optimization strategy based on the Bayesian framework is proposed, and the optimization of multiple machining parameters is realized with the goal of minimizing the error efficiency cooperation coefficient. Finally, the optimization software of machining processes of low rigidity parts for engineering application is developed. In the verification experiments of blade parts, the error efficiency cooperation coefficient is reduced to 0.032 1 after optimization, and the average improvement of machining errors of all measured points is 14.31 μm. Besides, the above method is applied to low rigidity shaft parts, and the effectiveness of the proposed method is further verified.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-024-00520-1

Key words: Machining allowance distribution, Machining parameters optimization, High-performance machining, Low rigidity parts, Multistage processes