Re: DeskNC limitation

Donald,

I'm assuming you're running the motor direct drive to the input shaft
of the rotary table, right? If so, how about changing your drive to
a cogged belt setup with some more reduction between the pulleys?

I built a setup similiar to yours using a Hardinge dividing head and
found the only way I could get the fine resolution I wanted was by
the cog belt reduction method.

Doug

--- In CAD_CAM_EDM_DRO@egroups.com, don.pat.brock@p... wrote:
> I recently finished a single axis drive unit for converting a
rotary
> table with the intent of using DeskNC as the control software. I
> think I have found a limitation in the software though and would
like
> to ask the list for input. It seems that the 'A' axis can only be
> programmed and display to four places to the right of the decimal
> point. This only gives 36 seconds of accuracy.
>
> Running the drive/motor in half-step mode and using a gear ratio
> (5:1) will give me 7 & 20/100's seconds accuracy. The table being
> converted has 15 seconds accuracy. (5 turns on the motor is equal
to
> 4 degrees or 2000 half steps)
>
> Can anyone recomend a software package that will accept, process
and
> display the 'A' axis to a 5 or a full 6 places to the right of the
> decimal point?
>
>
> Donald Brock
> Baton Rouge, LA