On 6/25/22 14:21, Nicklas SB Karlsson wrote:
Den 2022-06-25 kl. 19:44, skrev ken.stra...@sympatico.ca:
I agree about stopping and I have the broken tips to prove it! IMHO
an even
better solution would be to:
* Allow jogging as usual if probe is not tripped
* If probe trips, reverse motion until probe is untripped
Guess reverse direction might be a little bit confusing, what about
manual reverse direction allow jogging backwards instead?
There might be a problem if barely touching so that there are glitches
then moving away backwards. Guess some distance then probe input go
low happen is a good idea. There is toggle button for temporary allow
jogging then end switching is tripped and this i probably a good idea
also for the probe to not get stuck.
* Move forward in the original direction at slow speed until probe trips
again
* Stop
This would allow jogging at any speed without fear of probe damage.
If the
probe trips then one could set X/Y/Z zero when the motion stops.
It is also useful if machine stop then using g-code. An attribute in
tool table to indicate it is a probe so signal should be connected is
also useful but not very important since work around is possible.
Nicklas Karlsson
I've broken several Reneshaw up to $250 clones, but most were junk I
never should
have bitten on.
If I need an accurate z, I usually rig a piece of unetched pcb as a test
contact, then
incorporate that offset into my code. Just make sure your spindle is
grounded and its
quite easy to get .0002" or better repeatability. None of the Reneshaw
clones I've had
have that sort of accuracy, lucky to be .002" for repeatability. Pretty
shabby in real use.
So I just measure with the tool & be done with it.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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