NDLI: Derivaton of Kinematic Relations and Finite Element Stress Analysis of Flexspline in a Harmonic Drive Gear Box

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Shishesaz, Mohammad
Copyright Year	2010
Abstract	This article investigates the kinematic relationships in a harmonic drive gearbox with a fixed circular spline. According to derived equations, as well as finite element results on flexspline, the ratio of vertical to horizontal deflection is constant for all values of the applied load. This ratio barely depends on geometric dimensions of the flexspline. According to kinematic relations, the difference in gear teeth of the flexspline and that of circular spline can only take values of 2 or 3. Finite element results, enforces value of 2 to be used. According to the results, flexspline deflection reveals similar behavior to that of a cylindrical shell. This similarity manifests itself in terms of a correlation factor Cf, through which one can find the flexspline deflections ratio using cylindrical shell results. A complete knowledge on this factor can eliminate any cumbersome work on finite element modeling of the flexspline. Moreover, using the proposed design curves (based on finite element results), one can calculate the required force for a full engagement of gear teeth without exceeding the bearing stress values of a flexspline, in a typical harmonic drive gearbox.
Sponsorship	International
Starting Page	455
Ending Page	463
Page Count	9
File Format	PDF
ISBN	9780791849187
DOI	10.1115/ESDA2010-24567
e-ISBN	9780791838778
Volume Number	ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 4
Conference Proceedings	ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2010-07-12
Publisher Place	Istanbul, Turkey
Access Restriction	Subscribed
Subject Keyword	Deflection Splines Bearings Stress analysis (engineering) Dimensions Mechanical drives Modeling Stress Design Gears Gear teeth Kinematics Finite element analysis Pipes
Content Type	Text
Resource Type	Article

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