Re: [CAD_CAM_EDM_DRO] another limitswitch quest...

Thanks for the heads up about safety, I've been toying with a limit switch (multipattern) idea for a while and
sounds like this is a good case for a "backup mechanical switch". It could be arranged to activate
a few mil after the electronic switch.

Hans W


Bill Higdon wrote:

> Jens,
> I worked with this type of switch for many years in printers, X-Ray film
> changers etc. They are no good if in a dirty environment like Impact
> Prnters, Machine tools etc. Watching a printer slam dunk a head into a
> end stop is no big deal, but a mill slam dunking a tool into the platten
> or work piece is another story. And watching a Highspeed carridge move
> at warp 9 (40 meters per second)for 25 meters before hitting the end was
> really an awe inspiring thing (AWE S--T)
> Bill Higdon
> Jens Swales wrote:
> > hi all
> >
> > i was thinking of swap my mechanical microswitches to optos, fork-
> > stylys, that reacts when a object (nock, actuator or whatever) goes
> > in the led/transistor gap. does anyone know how this works in a shop-
> > environment, with all dust and dirt that sooner or later gonna cover
> > both led and transistor with a fine layer.
> >
> >
> > js
>
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