Material Engineering and Mechanical Manufacturing

Freestyle belt polishing technology for leading and trailing edges of aero-engine blade

  • ZHANG Junfeng ,
  • SHI Yaoyao ,
  • LIN Xiaojun ,
  • DUAN Jihao
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  • The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2016-04-18

  Revised date: 2016-05-30

  Online published: 2016-06-14

Supported by

National Science and Technology Major Project (2015ZX04001003)

Abstract

As the key part of the blade, the leading and the trailing edges (LTE) play a very important role in aero-engine. The profile of the LTE can directly affect the aerodynamic performance of aero-engine, and its surface quality can largely determine the fatigue life of the blade. To reduce the profile error and improve the surface quality, the problems existing in LTE polishing process are analyzed. Based on the polishing requirements of LTE and the process features of abrasive belt polishing, the method of freestyle belt polishing process with tension force control system for LTE is proposed. The calculation formula for feeding step length and polishing path planning method are obtained. The polishing experiments of a blade are carried out. The test results show that the profile accuracy and surface quality of LTE are improved significantly, with the profile error being less than 0.01 mm and roughness less than 0.4 μm.

Cite this article

ZHANG Junfeng , SHI Yaoyao , LIN Xiaojun , DUAN Jihao . Freestyle belt polishing technology for leading and trailing edges of aero-engine blade[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017 , 38(3) : 420327 -420327 . DOI: 10.7527/S1000-6893.2016.0179

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