digitizer

ptengin@... wrote:

> Group,
>
> I designed a version that uses a ball from a heim joint. About a 3/8" unit
> would be good . The probe shank is pressed into the center of the ball.

> I have a cylindrical housing that has a delrin bottom plate. Into this, I would
> have three setscrews set so the probe runs deads true by spinning with a dial
> indicator, The three screws would then be locked and connected to a 3 input
> "and" circuit. The trick is to make the fit of the ball to the cylinder bore
> about .0005 clearance.

> I will post a drawing if there is interest.

I'd be interested - I'm wondering what makes the probe hang down
exactly vertically, and if it is so constrained vertically, what enables it
to flex sideways without breaking if it runs sideways into the vertical edge of
the object.



Doug Fortune