Re: Geck G201

D'oh.

I screwed up the math. My apologies.

That should be a 12 IPM (not 2.4) and the frequency should be more
like 20 KHz NOT 500 kHz...silly me. Hit send before checking my off
the cuff mental gymnastics and stuck my foot in it.

Call it poetic license. I exaggerated to make a
point...ummm...yeah...that's it.


Barry

--- In CAD_CAM_EDM_DRO@y..., "fast1994gto" <beking@h...> wrote:
> You need this sometimes when the indexer has a hard time generatig
> the number of pulses required to actually get some speed out of the
> motors.
>
> Here's an example:
>
> Taig 2019 mill with 20 pitch leadscrew. Thats 0.05" per revolution
> of the screw or 20 turns per inch. At 10 microsteps per step and
200
> steps per turn and 20 turns per inch that works out to a whopping
> 40,000 pulses to go a measily inch. Let's consider an indexer that
> can (only) crank out 8kHz or 8,000 pulses per second.
>
> 40,000 pulses/inch / 8,000 pulses/sec = 5 sec/inch
>
> Expressed more naturally that is 0.2 inches/sec (IPS). That works
> out to a paltry 2.4 IPM. That really sucks. You want 20-30 IPM.
> That would require up to 500,000 or 500 kHz worth of pulses.
>
> Some indexers (or slower computers) will struggle with producing
that
> many pusles. Hence the rate (pulse) multiplier. It buys you the
> headroom on your indexer to produce fewer pulses whilst allowing
you
> to retain the advantages of the smooth microstepping Gecko drive.
>
>
> Barry
>
> --- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:
> > In a message dated 14-Feb-02 11:29:09 Central Standard Time,
> > spambox@r... writes:
> >
> >
> > > Okay, stupid newbie question: what's the multiplier do and why
do
> I want it?
> >
> >
> > NOT a "stupid newbie question"! I am an OLD member, and I am
STILL
> waiting
> > for this same explanation myself!
> >
> >
> > [Non-text portions of this message have been removed]