Hi everyone! Sometimes when I am probing, especially Z, with the onefinity touch probe, the machine does not detect contact and it continues to force the bit into the touch probe until there is an alarm and it stops. The force can dull, damage, or break the bit. It seems random. Everything seems to be set up properly, there is no glaring difference between that and a successful probe that I can tell. Maybe there is some looseness in one of the connections (in the block or on the spindle) somewhere but I can’t tell.
Is this a known issue, and are there any common factors that cause it? Thanks!
since using the touch plate means closing an electrical contact, the error must be in the connection. You could
make sure the the inside of the taper in the collet is clean of any baked wood dust
same for the bit shank
the connector at the CNC controller has no error (unfortunately these Molex/Amphenol connectors only have tin-plated contact and the plating is thin, so after exposing the bare copper of the contact to air, there could be corrosion); also the crimp could be unsatisfying or have become loose
the magnet end and the banana plug end of the cables have no strain relief and the cables are known to internally break after a certain time; you can get replacement at Onefinity or at the manufacturer Triquetra
Also you did not say what system you are using but if masso you should always test probe first.
Per masso doc.
CAUTION: It is advisable to quickly test your touch probe before starting a probing cycle to ensure it is working properly. This is done by triggering the Probe and observing the indication at the top of the screen
This is awesome, I did not know about this test! I will add this to my routine as well thank you @Woodpecker. Yes I’m running Elite Foreman with Masso G3.
OK good. sometimes the magnet position does not make a good connection and this test allows you to check before doing the probe. Lots of little tricks you will find along your OF journey.
In the future alway tell us what machine you are using. I too am a Elite Masso user.
Just made this
I had the same problem and decided to place the magnet on the the metal part of the spindle and not the collet. Never had a problem since then…might work for you…
Do you have an Elite machine? If not what firmware version are you using on your BB controller? The latest versions all have you touch the block to the bit as the first step when zeroing the bit. I did have a small woodchip once get between the bit and the block that blocked the electrical path that bottomed the bit out. I would suggest reading up on the latest official release version of the firmware if using a BB controller and then possibly update it. I’ve found having macros really nice for doing repetitive tasks.
You guys are awesome. I am combining all of the advice I have received, ensure the surfaces is dust free and attaching the magnet to the spindle vice the collet. Now I lift the touch plate to touch the bit and observe the Masso probe indicator turning green, prior to probing. This gives me much more confidence that everything else is set up correctly and the circuit is not broken somewhere. And, I’m not sweating over the e-stop while probing
Hi,
That happened to me a few times, and I figured out the magnetic clip on the spindle was on the nut/Collette, that has a special coat sometimes doesn’t make contact, so start putting the magnetic clip on the spindle shaft right above the Collette, after that not a single problem.
With Elite Foreman Masso G3
I have not had this issue. However, each time I probe for Z I had my hand on the z-stop not knowing if it would stop. I was not aware of this simple test so a huge thank you!!!
