Gear Scripts:
The gear scripts are Matlab scripts to create curves for involute gears. These scripts create an x-y path for gears given the diametric pitch series, pitch angle, number of teeth, gear height, and a few other characteristics. My main reference for creating these gears is the Machinery Handbook pg 1995 to 2010, and the McMaster Carr catalog (which has examples for different pitch series). [1] [2].
Spur gears are typically based on involute curves. The contact point between two involute gears moves along a straight line of action between two base circles. This construction line is inclined at an angle called the gear pitch angle. An involute gear can also drive another involute gear, with both rotating at a uniform rate, even though the center-to-center distance is varied.
In order to mesh, gears must have the same pitch angle. They must also be part of the same diametrical pitch series. (Diametrical pitch is the number of teeth on a gear of a certain reference diameter (# teeth for 1" diameter for ANSI)).
References:
[1] Oberg, Eric, FD Jones, HL Horton, and HH Ryffel. Machinery Handbook. Industrial Press, 1992.
[2] www.mcmaster.com
LICENSE: BSD License
Copyright (c) 2015, Aaron M. Schinder
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