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On Tolerance Information Extraction of Feature Model in Automotive Engine CAPP System

[+] Author Affiliations
Sun Yuguo

University of Shanghai for Science and Technology, Shanghai, China

Paper No. DETC2005-84124, pp. 599-602; 4 pages
  • ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 31st Design Automation Conference, Parts A and B
  • Long Beach, California, USA, September 24–28, 2005
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4739-X | eISBN: 0-7918-3766-1
  • Copyright © 2005 by ASME


A generative automotive engine CAPP (Computer-Aided-Process Planning) system based on Oracle database was developed. A practical tolerance information communication solution between the CAD and CAPP system was proposed and realized in an independent file schema. A parametrical cylinder head model based on manufacturing feature was created to meet the requirements of the CAPP system feature recognizing. The data structure of the tolerance information in the Pro/ENGINEERING database was presented. A Pro/TOOLKIT program was developed to extract the model’s tolerance information automatically. The tolerance information extracted was then organized with EXPRESS language and imported into the CAPP system database Oracle.

Copyright © 2005 by ASME



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