I cannot seem to get this right.. I want to create 2 gears that work together.
I can create gears, but I cannot seem to figure out the math needed to make them uniform, or where they work together.
There is a mathematical way to do this. I do not know the formula..
What I tried:
- Create a circle
800px x 800px - Create a circle
600px x 600px - Create a star with inner radius 200 (400 diameter), 500 (1000 diameter) outer, with 12 points.
- Compound the smaller circle and star. Intersect the remainder.
Do the same thing, except half each value and the points.
I would think this would make a 2:1 gear ratio where both gears match exactly, but they don't...
Answer
The same way one would create a real working gear. Here are tools which will create gears:
See the site http://woodgears.ca/ for more information on gears --- they have a Gear template generator as well: http://woodgears.ca/gear_cutting/template.html
Alternately, you can draw them by hand --- you just need to use basic geometry to ensure that the diameter of each gear is an integral ratio.
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