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Effects of Powders on the Precision of a Powder Metallurgy Helical Gear

[+] Author Affiliations
Ming-Ta Yu

National Chiao Tung University, Hsinchu, Taiwan, R.O.C.

Chung-Biau Tsay

Minghsin University of Science and Technology, Hsinchu, Taiwan, R.O.C.

Paper No. DETC2007-34629, pp. 791-798; 8 pages
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 10th International Power Transmission and Gearing Conference
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4808-6 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME


This study refers to the conditions of practical powder metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the effects of two parameters, powders and pitch circle radius, on gear precision. The relationship between gear parameters and gear surface deviations was derived from the mathematical model of the involute helical gear and the analysis of gear surface deviations. In accordance with the measurement results of experiments, an ideal correction on the parameters of a forming die is obtained from the computer simulations of gear surface deviations.

Copyright © 2007 by ASME



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