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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (17): 428191-428191.doi: 10.7527/S1000-6893.2023.28191

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Allowance optimization method of hollow blade machining under coupling constraint of wall thickness and profile

Haolin YIN1, Neng WAN1(), Xiaogang SHEN1, Dao WANG2, Hu QIAO3   

  1. 1.School of Mechanical Engineering,Northwest Polytechnical University,Xi’an 710072,China
    2.AECC South Industry Co. ,Ltd,Zhuzhou 412002,China
    3.School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China
  • Received:2022-10-31 Revised:2022-12-05 Accepted:2023-01-17 Online:2023-09-15 Published:2023-02-17
  • Contact: Neng WAN E-mail:wanneng@nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52175435)

Abstract:

To address the problem of non-uniform and negative allowance distribution of wild-chord hollow fan blades, a multi-level allowance optimization method which considers the coupling constraint of wall thickness and profile is proposed. Firstly, in term of the profile measurement result by on-machine measurement, the blade blank surface is reconstructed by the Laplace mesh deformation to obtain the accurate normal vectors of wall thickness measurement in a short time. To make the machining allowance distribution meet the design requirements of the wall thickness and profile, the optimization constraint which couples the wall thickness and profile are established, and the multi-level allowance optimization variables with different solution spaces are achieved, so as to construct allowance optimization models with different priorities. Furthermore, different optimization models are used to get the optimal hollow blade allowance distribution. Finally, the proposed method is verified by the experiment which takes a certain type of hollow blade as the object, and the experiment ensures the tolerance constraints of machining allowance, wall thickness and profile coupling, providing a new method for intelligent allowance optimization of wide-chord hollow blades.

Key words: allowance optimization, hollow blade, Laplace mesh deformation, constraint coupling, adaptive machining

CLC Number: