Gene Heskett wrote: > They are now included at > <http://gene.homelinux.net:85/gene/emc> as 'probe-*.jpg' > > These opto's I used have about a .150" gap. It holds the thing together when > assembled. I don't recall now if they have schmidt outputs or not. > Nice probe. I made one using the Renishaw patent using three carbide pins resting on steel balls. If one of the pins is lifted, the circle is broken and the switch (de)activates. My webpage (http://www.myvoice.nl/freesmachine/nulsteller.php?lang=en) shows it being developed as a tool-length probe but mounting it upside down in the spindle makes it a touch probe - only needs a different bottom plate (becoming the top-plate with a pin to fit in the collet) and a probe tip instead of a flat probing surface. The design is a bit complex but the nice thing is that it works great on curved surfaces as well.
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