re:Jon A digi design was Re: Renishaw, digitizers
Posted by
ballendo@y...
on 2001-01-12 20:37:15 UTC
Jon A wrote:
With an opto-sensor placed at the edge of the pressure plug(green in
dwg) and the shank (magenta in dwg), you may have a winner. You'd
probably have to play with the spring pressure/ conical depression
angle some. I'd put a screw in the shank to adj. spring pressure, and
use a light spring. Also some teflon grease where the probe end
touches the pressure plug(and pressure plug to cylinder).
Hope this helps.
Ballendo
P.S. Yes, I'm aware that the teflon grease could smear as the
pressure plug goes up and down, but a simple change (a step) would
allow the opto to still work (by placing the "line of sight" above
the smear.
>I drew up my idea and posted to my web site.Jon,
With an opto-sensor placed at the edge of the pressure plug(green in
dwg) and the shank (magenta in dwg), you may have a winner. You'd
probably have to play with the spring pressure/ conical depression
angle some. I'd put a screw in the shank to adj. spring pressure, and
use a light spring. Also some teflon grease where the probe end
touches the pressure plug(and pressure plug to cylinder).
Hope this helps.
Ballendo
P.S. Yes, I'm aware that the teflon grease could smear as the
pressure plug goes up and down, but a simple change (a step) would
allow the opto to still work (by placing the "line of sight" above
the smear.