what are the Equations of Double pinion Planetary gear set ?
I want equations to select no of teeth in a Double pinion planetary gear set. I have been through one guide which is issued by KHK gears. But unfortunately, that is for single normally planetary gear set. Here I have attached those pictures.
please go through them and suggest to me whether these equations are enough or I have to consider some other.
Any help would be appreciated.
Thank you!
chand.
Accepted answer
What do you need to know?
The double planet can be treated as one planet with the sum of the teeth of those double planet.
It gets a bit more complicated if you plan to use profile shifted gears. But for non-shifted profile gears then the pitch diameter is the rolling diameter and equal to modulus*Z (no.0 of teeth)
So just make the calculatations for what you need, and the resulting planet lets say it's 32 teeth for one planet, you can divide into two like 15 and 17teeth for the double planet.
Asuming you respect your diagram 1a.png and the planets are exactly in line with the axis of the sun and ring.
