3imoh
03-04-2008, 10:02 PM
Howdy all-
I finally got around to finishing the belt-box reducer for a custom indexing fixture I am building. I am running an alpha 7.2:1 through 2 4:1 belt reduction drives. I am having an issue getting the proper unit value for this. I believe the proper unit value for this should be 320...I got this by doing the following per the manual:
(7.2*4*4) * 1000 ) / 360 = 320
When I input this into the SW, I only get around 3/4 of a revolution when I tell the B axis to move 360 degrees. I can get it closer by setting the unit value to around 400 or so, but I would prefer to get the right value instead of figuring this out empirically...
I am at a total loss. I have checked and rechecked the pulley sizes, and everything checks out...I am running 72 tooth large pulleys and 18 tooth small ones.
Any thoughts on what I am missing here?
thanks,
howie
I finally got around to finishing the belt-box reducer for a custom indexing fixture I am building. I am running an alpha 7.2:1 through 2 4:1 belt reduction drives. I am having an issue getting the proper unit value for this. I believe the proper unit value for this should be 320...I got this by doing the following per the manual:
(7.2*4*4) * 1000 ) / 360 = 320
When I input this into the SW, I only get around 3/4 of a revolution when I tell the B axis to move 360 degrees. I can get it closer by setting the unit value to around 400 or so, but I would prefer to get the right value instead of figuring this out empirically...
I am at a total loss. I have checked and rechecked the pulley sizes, and everything checks out...I am running 72 tooth large pulleys and 18 tooth small ones.
Any thoughts on what I am missing here?
thanks,
howie