billinr
Nov30-10, 03:10 PM
Hello All
I am trying to work through a belt drive design and I am confused with a simple concept.
I have a two stage system that has a max torque input of 110N. I want to treat this as "worst case", so I assume that all of the torque is used at the final output flywheel.
The first stage has the same ratio as the second stage, but the pulley sizes are different.
I have the belts designed, but my issue is that I need to explain to the customer why I am using a wider belt (poly-v) on the first stage than on the second. The second belt width is 80% of the first. This is what my calculation software tells me is correct.
The drive has been tested, so I know it works - I just do not know why it works.
Could someone explain to me:
When there are multiple stages in a drive, how does the relationship between the ratios affect how much of the torque is consumed in each system? With these two systems having the same ratio, do they each consume 1/2 the torque? (Obviously not, because of the belt width difference??) Is this due to the differences in the pulley sizes?
For a future reference, if the system ratios were different, how does that affect the calculation?
Thanks for any assistance.
I am trying to work through a belt drive design and I am confused with a simple concept.
I have a two stage system that has a max torque input of 110N. I want to treat this as "worst case", so I assume that all of the torque is used at the final output flywheel.
The first stage has the same ratio as the second stage, but the pulley sizes are different.
I have the belts designed, but my issue is that I need to explain to the customer why I am using a wider belt (poly-v) on the first stage than on the second. The second belt width is 80% of the first. This is what my calculation software tells me is correct.
The drive has been tested, so I know it works - I just do not know why it works.
Could someone explain to me:
When there are multiple stages in a drive, how does the relationship between the ratios affect how much of the torque is consumed in each system? With these two systems having the same ratio, do they each consume 1/2 the torque? (Obviously not, because of the belt width difference??) Is this due to the differences in the pulley sizes?
For a future reference, if the system ratios were different, how does that affect the calculation?
Thanks for any assistance.