Material Engineering and Mechanical Manufacturing

Stability analysis of aircraft skin mirror milling process

  • WANG Changrui ,
  • KANG Renke ,
  • BAO Yan ,
  • ZHU Xianglong ,
  • DONG Zhigang ,
  • GUO Dongming
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  • 1. Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China;
    2. Changhe Aircraft Industries(Group) Co., Ltd., Jingdezhen 333000, China

Received date: 2018-03-01

  Revised date: 2018-03-19

  Online published: 2018-11-27

Supported by

National Engineering and Research Center for Commercial Aircraft Manufacturing (201500308); National High-tech Research and Development Program of China (2015AA043402)

Abstract

In recent years, the mirror milling technology has been developed for processing large-sized thin floor parts, which is environmentally friendly and efficient, and is growing to replace the traditional chemical milling process. To overcome the problem of chatter in aircraft mirror milling, a method is proposed to prevent the occurrence of chatter by optimizing the cutting parameters. According to the characteristics of mirror milling process, a prediction model is established for predicting stability limit of mirror milling. A modal analysis of skin parts is performed by using the finite element method to analyze the changes of milling stability caused by the changes of the dynamic characteristics of different processing positions of the skin. The dynamic parameters of the workpiece are obtained through experimental measurements, and the chatter stability of different processing positions is obtained. Experiments are carried out using non-contact measurement method to monitor the vibration displacement in processing area on-line. The processing status is identified with time-frequency domain synthesis analysis. The results reveal the stability changes during mirror milling process and the instability mechanism. Effectiveness of the method proposed is validated to be effective, showing great applicability in practice.

Cite this article

WANG Changrui , KANG Renke , BAO Yan , ZHU Xianglong , DONG Zhigang , GUO Dongming . Stability analysis of aircraft skin mirror milling process[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018 , 39(11) : 422109 -422121 . DOI: 10.7527/S1000-6893.2018.22109

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