Re: [CAD_CAM_EDM_DRO] Re: Feedback on Free stepper calculator

Hi Fred,

I was thinking of having an additional "transmission" type, that of
worm. I'm using a 72:1 worm, (Sherline rotary table).

200 steps, 1/2 step, 72:1 worm, 360 degrees == 0.0125 deg/step. There
is no additional belt reduction.

I incorporated these calculations in the controller program I wrote.

Alan KM6VV


"Fred Smith " wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Alan Marconett KM6VV
> <KM6VV@a...> wrote:
>
> > I can see that it's basically for calculating steps to motion. It
> would
> > be nice if it also calculated for worm drives, I.E. rotary tables.
> >
>
> As in :
>
> Steps per rev * worm ratio /360 = steps per degree output
> 5:1 = 72 degrees per input rev worm ratio (one revolution of the
> handle)
> 200 * 72 = 14400 steps per rev /360 = 40 steps per degree, or .025
> deg per step. plus micro stepping multiplication
>
> 360 degrees per minute = 240 steps per second
>
> 1200 steps per second = 1800 degrees per minute
>
> What are the combinations, direct drive, worm ratio, any need for
> belt reduction on a rotary axis calculation?
>
> Fred Smith - IMService
>
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