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Free-Form Conjugation Theory

[+] Author Affiliations
Bowen Yu, Kwun-lon Ting

Tennessee Technological University, Cookeville, TN

Paper No. DETC2011-48337, pp. 481-492; 12 pages
doi:10.1115/DETC2011-48337
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 35th Mechanisms and Robotics Conference, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5483-9
  • Copyright © 2011 by ASME

abstract

The paper presents the first theory and practice for free-form conjugation design and extends the conventional conjugate tooth profiles to free-form tooth profiles. It presents a conjugation theory that offers a rigorous correspondence between a conjugate pair and the cutter profile or contact path, discovers the necessary and sufficient conditions for non-undercutting with differential curves, and thus extends the traditional free-form single surface modeling to dual conjugate surface modeling. Free-form conjugation modeling and synthesis can be carried out through the cutter profile or the contact path surface. The paper offers a general theory and methodology for free-form modeling and synthesis of planar conjugation, extend the traditional single surface free-form modeling to dual-surface conjugation modeling, and establishes the foundation that will offer much needed design freedom enabling one searching for conjugate surfaces with optimal or desired performance in any transmission involving contact surfaces. The theory is demonstrated in gear tooth profile design through splines and thus provides a fresh perspective on gearing.

Copyright © 2011 by ASME

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