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The Assembly Variation Modeling for the Rear Casing Wax Part Based on Polar Coordinate

[+] Author Affiliations
Changhui Liu, Sun Jin, Xinmin Lai, Bo He, Fei Li

Shanghai Jiao Tong University, Shanghai, China

Jie Luo

Pan Asia Technical Automotive Center Co., Ltd., Shanghai, China

Paper No. MSEC2015-9292, pp. V001T02A083; 5 pages
  • ASME 2015 International Manufacturing Science and Engineering Conference
  • Volume 1: Processing
  • Charlotte, North Carolina, USA, June 8–12, 2015
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5682-6
  • Copyright © 2015 by ASME


Rear casing is a key part of the aeroplane engine. Its dimensional precision is significant to the quality of the aeroplane engine. In the rear casing manufacturing process, the assembly variation of its corresponding wax dramatically affects the final dimensions. In this paper, a polar-coordinate based model is proposed to calculate the assembly variation of ring-shaped rear casing wax part. It avoids the variation caused by the coupling relationship between Cartesian coordinate systems and locating position. We also compare the polar-coordinate based model with the ordinary one in practical application. The results show that the polar-coordinate based model can simplify the calculating process and improve the computational accuracy for the assembly variation analysis of the ring-shaped part.

Copyright © 2015 by ASME



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