Re: [CAD_CAM_EDM_DRO] Re: Re: Re: Digitizers,

Seems reasonable Greg. Most (even very expensive ones) CMM's are
mechanically noisy even when moving slowly to take points. It is quite
general to accept a trigger from a probe but not believe it until some
other event proves it wasn't just noise. The first event locks the scales,
the second allows their reading and stops the machine motion. Or variations
on that theme. The alternative is to increase the trigger threshold but
that cause a whole heap of other problems.

Regards
Bill Phillips
From Stroud where the moon is now recovering from its eclipse.

>From what I have been told by the trainer from Zeiss is that their piezio
>probe works as a strain gauge. When the probe first touches the part the
>crystal produces a signal the probe continues its motion until the probes
>switch changes state. If this occurs within certain parameters the position
>where the crystal signaled is considered a good position. I'm sure it isn't
>all that easy but that is what I remember.
>
>Greg