Re: re-selection of motors....avoiding another rathole

Many are recommending the belt/pulley setup.

Point is taken, BUT Unfortunately, My mill is already "moving
around" with the direct drive setup which I have pretty much
finished with brackets and helical beam couplings on xyz.
I hate to start completely over.

This is a small micromill (HF47158) that is not a super precise
machine. A bit of backlash in the gears could be compensated for in
the controller, although I will check into this some more. Maybe
there arent many folks using the gear motors. I also could sell my
gecko 320 servo drives, and drop in some stepper drivers/stepper
motors

I think you are right, motor 2 is a bit weak, and motor 1 a bit
slow, but not for cutting speeds, i would think. I see what
you mean about the "electronics". They only go one way, but would
be replaced by the geckos.

Thanks for the info....Eric

If the gearheads arent suitable either...now I have to find some
steppers!!

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> etauch wrote:
>
> >Greetings,
> >
> >Recently I posted on the overheating servo drive issue. I have
> >decided that instead of moving to belt and pulley, I would try
> >a "gearhead" servo motor in the 160-500 rpm range. This is
> >for running direct drive thru helical beam shaft couplers. I will
> >calculate the exact RPM I need based on my leadsrews (10:1) I
believe
> >and desired IPM and pulse rate of my current PC.