Re: Smaller machine stepper motor speeds and resolution

Jan

You didn't read his reply, he said with a 2.5TPI screw. Having said
that the math is still wrong... 2.5TPI = 0.4" pitch /200 = 0.002" per
step.

Bernard

--- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:
> In a message dated 16-May-02 13:20:00 Central Daylight Time,
> tony@j... writes:
>
>
> > With 200 steps/rev, a 2.5TPI screw will give 1/2 thou per full
step (1/4
> > thou if you are half-stepping) which is your target accuracy. So
anything
> > finer than 2.5 TPI will apparently meet your spec.
> >
> >
>
> Not by MY math! 200 steps/rev. with 0.1"/turn pitch = "1/2 thou"
(5
> "tenths") per full step. Your slide-rule needs new batteries?
>
>
> [Non-text portions of this message have been removed]