|Apr16-11, 02:10 PM||#1|
Gear Interference Question
I'm designing a 2-stage gearbox for a project at school (15:1 ratio, must transmit 20 hp, for a full-time 10-year minimum life).
I've come up with 2 basic gear combos for my layout:
I've done all the calculations for each layout such as making sure that the required hp is transmittable through each gear (using that as a basis for selecting stock gear size and material) for infinite life, and looking at the weight balance / volume aspects for the most efficient design possible.
What I'm having trouble with is understanding the whole interference thing.
I see with 20 degrees you need to have a minimum of 16 teeth on the smallest gear and I'm okay grasping that.
But in looking at the maximum teeth for the larger gear, given a particular smaller gear teeth number, I'm having trouble understanding that.
I put an equation into excel to calculate it for me, and for 16 I come up with a max number of teeth for the larger gear to be 101, so I know I'm okay with the 16,80 combination. But for 24, I come up with a max number of teeth for the larger gear to be -39.
Does this mean that the 24/72 combination will experience interference, wearing out eventually?
Thank you for any replies.
|Similar Threads for: Gear Interference Question|
|I have gear question||Mechanical Engineering||2|
|Gear train design with idler gear||Advanced Physics Homework||0|
|Bicycling up hill, high gear or low gear||General Physics||17|
|gear question||General Engineering||2|
|Worm Gear/ Spur Gear||Mechanical Engineering||1|