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AGMA 05FTM10:2005 Edition

$14.30

Finite Element Study of the Ikona Gear Tooth Profile

Published By Publication Date Number of Pages
AGMA 2005 11
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Authors: John R. Colbourne, University of Alberta and Shubin Liu, Ikona Gear International

The Ikona gear tooth profile is a patented non–involute tooth profile for internal gear pairs. Gears with this

profile have the following properties: the teeth are conjugate; the contact ratio is very high; there is no tip

interference, even when only a one–tooth difference between the pinion and internal gear; there is minimal

backlash; and the gears can be cut on conventional gear–cutting machines. Large reduction ratios can be

achieved by a single gear pair and a high contact ratio results in lower tooth stresses than for a similar involute

gear. Plus, minimal backlash makes the Ikona profile ideal for many applications, such as servo–drives,

medical prostheses, and robots. Stress analysis of these gears assumes that the contact force is equal at

each contacting tooth pair. Finite element results demonstrate how the number of tooth pairs in contact may

increase under load. Finally, an estimate will be presented, showing the variation of tooth force between the

contacting teeth.

AGMA 05FTM10
$14.30