RE: [CAD_CAM_EDM_DRO] repeatable vs accurate switch

What's your definition of "a very tight tolerance"?
At the extreme end, you could play with interferometry...

John Haddy
Sydney, Australia

> -----Original Message-----
> From: Don Rogers [mailto:Don@...]
> Sent: Wednesday, 5 November 2003 4:31 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] repeatable vs accurate switch
>
>
> I am working on a machine design that needs a signal that is
> repeatable to
> a very tight tolerance. I don't care if it trips at 0.250" or at
> 0.000250", as long as it is the same each time. My thoughts now are
> focusing on optical sensors. First is just a plane flag
> through an optical
> coupler, and the second is a mechanical amplified version, IE
> a 10X gear
> driven optical aperture.
>
> Any pitfalls or ideas that come to mind??
>
> Thanks Don
>
>
>
>
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