"Jon Elson" wrote in message
news
wrote:


How do those audible click edge finders work? What makes the click?
I've only seen them in catalogs and the pictures have never been clear
enough to show what does the clicking. The edge finder I like the best
is a "Super Jump" edge finder. I think Flexbar sells 'em. I have
several edge finders but the Super jump gets the most use because it
is the most accurate and most easily visible.
It is built just like the usual edge finder with the concentric parts with a
spring to hold them together. The difference is there is a small flat
ground on the side of the feeler tip. You could turn a standard edge finder
into the audible type by just grinding the side of the tip.

Jon

*******

I just bought a couple "click" edge finders. Maybe its worth a little video
for others to show how they perform.

I can setup a couple on the Hurco easily enough. Makes a nice machine for
it. It will turn as slow as 100 RPM the way its currently tuned, I like
1000RPM on it for edge finding. I hope they will work on the little 24K
machines, since about 4K is the slowest they will turn reliably, and Fisher
labels them as 1500 max. I've been using the non-click ones on the high
speed spindles and the only time I have damaged one is when I looked away
while jogging and tore the tip off, or hit goto zero before resetting zero.
I know if you accidently hit start with the spindle set at 24K they just
come apart before you can stop the spindle. Heck before it even reaches
speed. Since the click type are inherently out of balance I hope I can spin
them at 4K without coming apart. I'll let you guys know.