Laser cutter is a piece of amazing equipment that makes it possible to quickly turn your design into physical parts. When it comes to cutting gears, you will need to take the following 2 points into consideration:
- Reliable gear tooth profile.
- Acceptable cutting tolerance.
1. Reliable gear tooth profile.
I won’t address the whole mathematics behind the gear theory here since I am not majored in Mechanics. If you have interest in the theory, you can simply search it online and mostly likely you will be buried with tons of information out there. However, if you just want to get the job done, there are a couple of options to automatically generate the gear tooth profile, mostly of which are for spur gears:
- Google SketchUp has an involute spur gear plug-in that allows you to create spur gear profile and then export to dxf using the stl/dxf export tool.
- GearDXF is a specialized program that designated to generate spur gear profile and export to dxf format.
- An quick and easy to use online Gear Template Generator that allow to interactively create gear on its webpages and export through print function.
CAD data from manufacture:
- Rushgear.com has a whole database of different gear types. They are specialized in gear customization and manufacture. So you can download their pre-made gear CAD file and do whatever you want with them.
- York Industry, same as above, offers CAD model for their gear production. But most of their CAD models are for timing pulley.
10 teeth, 48 pitch, 0.208″ pitch diameter
In my next post, I will take about laser cutting these generated gear and how to overcome the tolerance issue.