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Spur Gear Fitter Script

by cbiffle, published

Spur Gear Fitter Script by cbiffle Mar 6, 2011

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Summary

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.

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.

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Receiving an error: "No parameters found."

Jun 24, 2015 - Modified Jun 24, 2015

Error : Sorry! No Parameters Found.

thas is very usefull and simple, is there any way to adjust thew axle shaft of if i don't notice it

Nice! I started to use OpenScad with this.

I don't understand what are the values for fit_spur_gears function, you have n1 n2 and a number in your example but what does they represent ?

thanks.

regards,

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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