Re: [CAD_CAM_EDM_DRO] Re: digitizer arm, w/ encoder?
Posted by
dave engvall
on 2000-11-15 21:58:08 UTC
ballendo@... wrote:
First time I read this post I though Alan was suggesting something else...use the indicator gear to move a mirror...on to or away
from a sensor. i.e a led beam bounces off the mirror and is focused on a phototransistor. Might be more sensitive than the
photo-interrupter.
Dave
ps. the real trick will any device like this is to minimize the tangential deflection upon contact. (long bearing surface on the
probe ?)
> Alan, list,Indeed it is!
>
> The issue to solve with this probe, IMO, is how to allow 3 direction
> sensing while accomodating overtravel. This way you can treat it like
> a home switch. Probe 'til state change.(quickly) then retract and
> probe for position (more slowly). Just some thoughts.
>
> Ballendo
>
> >I wonder if a "photo-interrupter" could be used? A little deflection
> >would move the vain/tip out of the light path. Wouldn't give mills
> >of deflection, but could still be useful.
> >Alan
>
> Nice Idea!
>
First time I read this post I though Alan was suggesting something else...use the indicator gear to move a mirror...on to or away
from a sensor. i.e a led beam bounces off the mirror and is focused on a phototransistor. Might be more sensitive than the
photo-interrupter.
Dave
ps. the real trick will any device like this is to minimize the tangential deflection upon contact. (long bearing surface on the
probe ?)
Discussion Thread
Alan Marconett KM6VV
2000-11-15 15:31:40 UTC
Re: digitizer arm, w/ encoder?
ballendo@y...
2000-11-15 21:50:54 UTC
Re: digitizer arm, w/ encoder?
dave engvall
2000-11-15 21:58:08 UTC
Re: [CAD_CAM_EDM_DRO] Re: digitizer arm, w/ encoder?
Alan Marconett KM6VV
2000-11-16 00:19:44 UTC
Re: digitizer arm, w/ encoder?
dave engvall
2000-11-16 07:55:29 UTC
Re: [CAD_CAM_EDM_DRO] Re: digitizer arm, w/ encoder?