An open source, browser based utility for calculating and drawing involute spur gears. As an improvement over the majority of other freely available scripts and utilities it fully accounts for undercuts. For additional information please head over to my blog post.
Example #2 - Spur gear corrected tooth Consider to create the same gear of the Example #1 but with the number of teeth equal to 16. To do this it's necessary to correct the tooth of the gear using a shift coefficient x/m = +0.5. Here below are the input data and the corresponding gear created with a 3D cad software using the downloaded DXF. Jun 01, 2019 Involute Spur Gear Builder. Involute Spur Gear Builder is an open-source, browser-based utility for calculating and drawing gears. The tool also supports internal gears and rack and pinion assemblies. Many parameters such as circular pitch or pressure angle can be configured. Download File Type: DXF. Simple to use gear generator. I was going to make a web based timing pulley generator, just as Matthias Wandel and Abel had done for involute spur gear generators. The Project I wouldn’t call myself a computer scientist but I’m pretty stubborn, reasonably nerdy, and know my way around a few programming languages.
The page runs in modern browsers with SVG support (if in doubt, use Chrome). The generated SVG drawing can be downloaded and imported in CAD applications or opened in the open source SVG editor Inkscape to export as dxf or other formats.
The implementation is inspired by the subtractive process that Michal Zalewski's describes in part six of his excellent Guerrilla guide to CNC machining, mold making, and resin casting.
Instructions
Specify desired values in the parameters box and then click on the 'Update' button. The tooth count n1 of gear one defines various configurations:
- n1 > 0: A regular external gear
- n1 = 0: Rack and pinion
- n1 < 0: An internal gear as used in planetary gears
Svg Gear Generator Portable
The tool also supports profile shift to reduce the amount of undercut in gears with low tooth counts.
Once the gears are rendered you can use the mouse scroll wheel or the slider underneath the window to zoom in and out. For panning move the mouse while pressing the left mouse button.
Svg Gear Generator
License and Credits
Gear Tooth Generator
- The application itself, as well as the application specific source code is copyright (c) 2020 by Dr. Rainer Hessmer and is covered by the permissive MIT license.
- This page leverages svg.js with plug-ins svg.export.js, svg.path.js, svg.pan-zoom.js.
- For boolean 2d operations Javascript Clipper is used.