Re: [CAD_CAM_EDM_DRO] Re: Stalling motors?

monty60475 wrote:

> All axis are mounted with bronze bushings{x} and bearings{y} and
>both use ball bearing thrust washers & shaft collers to hold shafts
>in place. I have went through alot of trouble to make everything move
>easely and smoothly. Moving x znd y shafts by hand, I feel very
>little resistance and no binding. As far as the caculations I did not
>enter weight/mass for x axis (about 15#),recalculated with 20# and my
>requirments changed to 86 in/oz. Should my 125in/oz motors be able to
>move the gantry assy. at higher speeds than what I am seeing? As far
>as power supply I did check voltage with and without motors running=
>67V and reel steady. Any thing else I can check?
>Thanx,
>MONTY
>

I think with the above info, you need to examine your Softwares motor
settings. I have a very similar setup running 80oz motors and have run
as high as 400ipm, but under a different control. I did not have time to
take a real long hard look at all your numbers, but maybe your running
out of Step output with current driver settings ?? I am only running 1/2
step so my step output from the software goes a lot farther than you'll
get if you can only run those Geckos at 10 stepping.
You'd have to run the math on Mach1's max step output, divide by the
drivers usage and see how that relates to final speeds etc. But even
that wouldnt necessarily indicate why one axis is running different than
the other.

I guess I'd first swap a few things to see if the faster axis
"components" could bring up speeds in the slower axis. Do the crossover
one item at a time, just switching axis wires, then swapping drivers,
and then making a motor swap your last move. That might indicate
something. Your Motors with the setup described should be big enough.
As I recall, your gear ratio is similar to mine and the final drive
Torchmate uses or at least used...... Stick with it, something will
become obvious. At least you can feel confident your motors are big
enough especially at that voltage.

Chris L