Mike, in paper days of old we only drew the blanks and the gear gashers told us what gear notes to put on the drawings. They do all the heavy mathematical lifting for us!
While the gears can certainly be modeled for visual or simulation purposes I would not even attempt a gear simulation!
Well, I would attempt it but would not have much faith in my answers without consulting the gear folks.
Gear design is all mathematically transcendental anyway!