Re: [CAD_CAM_EDM_DRO] digitizer

Mariano,

You are correct all the probes I use have carbide or ceramic shafts to
obtain maximum rigidity. The head allows the probe to move. If the CMM
touches a part at too fast a speed it stops and calls it a collision. There
is a maximum probe speed along with a positioning speed. If you watch the
machine in action it rapids up to a short distance from the programmed point
then it moves in at the probing speed. The Zeiss has excellent anti-crash
programming, I have never damage the head or probe on the machine. The
drives will also slip if there is resistance to the machine moving. The
servo motors drive a wheel with a V groove in it. This wheel is clamped
against an aluminum rod by a wheel opposing it. Since the movement is
controlled by the glass scales a precision drive system is not that
important.

--Greg

> Gordon and the list
> most of the probes I have seen ( renishaw and zeiss) the probe arm is made

out of

> steel or ceramic not very flexible indeed
> regards mariano