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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2019, Vol. 40 ›› Issue (11): 423034-423034.doi: 10.7527/S1000-6893.2019.23034

• Material Engineering and Mechanical Manufacturing • Previous Articles    

Method for establishing machining and inspection model of multi-stage machining processes of thin-walled blades

LIN Xiaojun1, CUI Tong1, YANG Biying2, YANG Rui1, XIN Xiaopeng1   

  1. 1. School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang 221116, China
  • Received:2019-03-27 Revised:2019-04-24 Online:2019-12-03 Published:2019-08-23
  • Supported by:
    National Natural Science Foundation of China (51675439)

Abstract: In order to improve the machining quality of blade, reduce the scrap rate of finished blade and the machining cost. In this paper, the typical machining processes of aero-engine thin-walled blades, such as CNC milling, polishing, vibration polishing and shot peening, are taken as research objects. An error compensation method for a Multi-stage machining deformation and the method of establishing the machining model and inspection model are proposed. The theoretical model required by the drawing is only used as the final inspection model, and according to the accumulation of subsequent processing errors, the process inspection model is modified by the final inspection model. Through the example verification, the method proposed in this paper can effectively reduce the false positive rate of the blade process inspection and ensure the qualified process inspection and final inspection.

Key words: multi-stage machining processes, machining error, error compensation, machining model, Inspection models

CLC Number: