Gear Bearing (Parametric Fusion 360)

thingiverse

I remade emmett's gear bearing as a parametric Fusion 360 file. I have included a couple STL variations but you can customize it to a much greater degree if you use the f3d source file. You can use the "Change Parameters" menu to customize: - Number of planets - Sun diameter - Sun/Planet tooth count - Tooth pressure angle and length - Herringbone twist magnitude - Outside border width - Bearing height I recommend reviewing the sketches in the fusion file to understand how they work before changing any of the parameters. Parametric designs in Fusion have a tendency to be pretty fragile and sometimes you'll encounter errors when changing things. Some things that can help: - Don't change any single value by too much at once. For example, if you are going to increase the sun diameter from 10mm to 100mm, change in increments of 10mm at a time. - Take a look at the parameter "max_tooth_length". This value takes into consideration the diameters and number of teeth to give you the maximum tooth length possible. The value you set for "tooth_length" must be LESS THAN this value (not equal to). - After you change the number of planets or teeth, you'll need to adjust the last revolve and combine operations. Sometimes it's easier to just redo them entirely. - I've noticed that often when I change the number of teeth, in the sketch called "Top_Outline", the planet gear tooth coincident constraint goes to the wrong edge of the circle. You'll want to delete the coincident in that situation and move the end of the line over to the first intersection with the circle. Please let me know if you have any questions or suggestions.