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Spur Gear Fitter Script

by cbiffle, published

Spur Gear Fitter Script by cbiffle Mar 6, 2011

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Description

I've been working with Greg Frost's gear generator. Getting the gears to mesh requires some math, or trial and error. As a programmer, I don't like doing either one more than once. :-)

This script lets you specify the axle spacing and gear ratio and get the circular_pitch parameter. It simplifies fitting gears together.

Recent Comments

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Excellent stuff. I have used your equations in my Moray for Windows to OpenSCAD export plugin to be able to incorporate some rudimentary gear-capability :D

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Instructions

This is a library. To use it, include it in your own OpenSCAD creation. There are two functions you'll need. The included example_gears module demonstrates their use.

gear_outer_radius lets you compute the meshing radius of a gear, given its parameters. You'll need this to translate the gears into position.

fit_spur_gears computes the circular pitch for Greg's script.

Comments

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PolyVinalDistillate on Feb 27, 2014 said:

Excellent stuff. I have used your equations in my Moray for Windows to OpenSCAD export plugin to be able to incorporate some rudimentary gear-capability :D

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