导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (6): 2074-2082.doi: 10.7527/S1000-6893.2014.0203

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Flexible polishing technology of five-axis NC abrasive belt for blade surface

LIN Xiaojun1, YANG Yan1, WU Guang1, GAO Yuan1, CHEN Yue1, LIU Min2, LIU Mingxing3   

  1. 1. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Department of Science and Technology, AVIC Xi'an Aircraft Engine (Group) Co., Ltd, Xi'an 710021, China;
    3. Department of Process Technology Center, AVIC Xi'an Aircraft Engine (Group) Co., Ltd, Xi'an 710021, China
  • Received:2014-06-30 Revised:2014-07-18 Online:2015-06-15 Published:2014-09-22
  • Supported by:

    National Science and Technology Major Projects (2013ZX04011031)

Abstract:

For the abrasive belt polishing of blade surface, the flexible polishing machine of five-axis NC abrasive belt is designed and developed based on the feasibility of five-axis NC abrasive belt polishing. The concept of effective matching of contacting wheel and blade surface is put forward. A new method through improving the polishing tool,using the flexible polishing technology and controlling the polishing axis vector is used to ensure the effective matching of contacting wheel and blade surface. The polishing axis vector is calculated by normal vector of polishing location point and feed direction vector of contacting wheel, so as to achieve the effective matching of contacting wheel and blade surface, and meet the basic consistency between polishing wheel contacting pressure direction and flexible polishing structure retractable direction. The iso-parametric lines method is used to plan polishing path and polishing stepover length is determined by the polishing width. Finally, the polishing test result displays that the roughness of fine polishing can reach 0.25-0.39 μm, the profile about blade surface before and after polishing changes 0.007 mm, and the polishing material removal is between 0.010-0.016 mm, meeting the requirements of the drawings. Experiments show that five-axis NC abrasive belt polishing for blade surface is feasible and the technology described in this paper can meet the requirements of the blade surface polishing.

Key words: flexible, polishing machines, NC, blades, path formulation, attitude control

CLC Number: