If one wishes to compare factor of safety (FoS) in a planetary gearset when the planet gear is not split into 2 Vs when it is split into 2 gears. This raises the question: How to model split planet gears on the same planetary shaft?
(This Q&A has been posted by Hexagon Technical Support for the benefit of our community members)
Steps to model split planet gears:
1. Start with a standard Concept Planetary Gear Set and then convert its carrier and gears to detailed.
Concept Planetary Gear Set
2. Once step one is done, go to the respective 'Planetary Gear Set' worksheet and create a 'Proxy' for the planet gear.
(In the model attached, the 'Face Width' is reduced and the existing planet gear is repositioned to accommodate its duplicate, right to it's side - inline)
3. Post creating a proxy, you will have to mesh it with one of the gears - Sun or Ring gear. (For the time being you can only mesh it with any one of them, but we can later mesh it with the remaining gear)
Selected 'Sun gear' initially.
4. Now mount this gear to the respective sleeve assembly (on the required gear blank)
(Provide correct offset and then click on OK)
(The gears should now look something like below)
5. Come back to the required 'Planetary Gear Set' worksheet and mesh the proxy planet gear with the ring gear (other remaining gear).
(You can verify this modelling process by viewing the 'Connecitions' tab, by right clicking on the required proxy planet gear)
Final output
(Power flow)
This process will have to be repeated for other planet gears.
Steps to model split planet gears:
1. Start with a standard Concept Planetary Gear Set and then convert its carrier and gears to detailed.
Concept Planetary Gear Set
2. Once step one is done, go to the respective 'Planetary Gear Set' worksheet and create a 'Proxy' for the planet gear.
(In the model attached, the 'Face Width' is reduced and the existing planet gear is repositioned to accommodate its duplicate, right to it's side - inline)
3. Post creating a proxy, you will have to mesh it with one of the gears - Sun or Ring gear. (For the time being you can only mesh it with any one of them, but we can later mesh it with the remaining gear)
Selected 'Sun gear' initially.
4. Now mount this gear to the respective sleeve assembly (on the required gear blank)
(Provide correct offset and then click on OK)
(The gears should now look something like below)
5. Come back to the required 'Planetary Gear Set' worksheet and mesh the proxy planet gear with the ring gear (other remaining gear).
(You can verify this modelling process by viewing the 'Connecitions' tab, by right clicking on the required proxy planet gear)
Final output
(Power flow)
This process will have to be repeated for other planet gears.
