Re: [CAD_CAM_EDM_DRO] CMM Software

Hi Hans,

You might check out the patent documentation. I understand that the
patent might be running out?

I believe to a simpler extent, that the MaxNC probe is of a similar
design. As I suspect you're interested in making one, I'll describe the
MaxNC probe.

Basically, in the MaxNC, there is a triangular piece of PCB material
connected to the probe. This piece is pressed (with a spring) against a
round PCB with three 2-56 screws protruding through the board. The
center of the round board has a hole that clears the long thin probe.
The three contact pairs thus formed are connected in series. If the
triangular board is tipped, then one or more pairs of contacts are
opened, and this event (with a pull up resistor) is read into the PC on
a parallel port line.

For the Renishaw, there are three small spheres, and they bridge
triangular shaped contact pairs, as I recall.

I built my own (PCB style) probe. I even explored using some small
bearings to more closely duplicate the Renishaw, but never got around to
it.

Contact me off list if you're interested in hearing more.

Alan KM6VV


Hans Wedemeyer wrote:

>
> I'm don't know about other software, however I've been toying with the idea of capturing data from the encoders.
> My new DRO has a serial output and it would be easy to send data to the PC from it.
> I'm interested in the "Renishaw probe" where can I find more data ? I'd like to see how it works...
> Best Regards
> Hans W
> http://hans-w.com/dro.htm
>
> J wrote:
>
> > Is there an alternative out there to high priced cmm software? I wonder if EMC or others may be able to capture positions from encoders using a Renishaw probe? If this works, what are the limitations?
> >
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