Re: [CAD_CAM_EDM_DRO] positional resolution

Hello Peter,
Theoretical position resolution is one thing.
Real position repeatability is written on an other page.
So generally You should have a 5 time worse positioning.
Remember slack, counting etc.
Good luck
Sven Peter

cadcamcenter@... wrote:

>
> Hi
>
> A leadscrew with 20tpi and 200step/rev should have a positional
> resolution of 1/(20x200) = 0.00025 in.
>
> Have I missed something in the above calculation because I read on
> the website of a system vendor listing the positional resolution as
> 0.000125 in.
>
> Further, if in the above example, one uses 10x microstepping, is it
> presumptous to claim a positional resolution of 0.000025in?
>
> Many thanks
>
> Peter
>
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