CNC Tool Touch Probe 2/2
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- Опубликовано: 11 сен 2024
- Here comes the final version of the CNC Tool Touch Probe build.
In the last video you saw the prototype using a plastic housing and the Panasonic optical sensor. The final Version of the Z Height Tool Touch Probe has an aluminum housing and a stainless steel base. The steel base is important as this will prevent dings and nicks to the bottom of the base plate and this could tilt the touch probe and give a different tool height.
Now I had to top the accuracy off using the Metrol switch with an accuracy smaller than 1 micron and an upgraded all stainless steel design.
You can download a detailed shop drawing for all the components on my website:
www.jbworxstud...
Nice to see the metrol switches!
They are amazing I think
This is an amazing probe. And the price is quite reasonable.
Thank you !! I think in comparison what to what you can buy it’s a good price and it’s made for a router so it has a low profile.
Nice results.
I'm really missing some way to fix this probe to the table though. I know many people use the probe to measure the tool length and the Z offset of the Stock material. However I find it much more convenient to have a fixed TLS position and use a 3d Probe for Measurements on the Table. For this its critical that the TLS is fixed to the table in a solid way.
Yes that is my plan as well I have a 3D Probe in parallel to the Z Touch Probe. Actually many don’t use it that way but you also have an automatic tool changer if I remember right. That makes that almost a must. So the probe sits on the right front on my machine and it is fastend down using a different base (this one is made from Al). At the moment I think I might drill trough the table and fasten it underneath and just let the touch surface stick out. Not sure yet. Anyways thanks for your comment.
Your work is always awesome 👌👌
Thank you Saeed!!
Have to build one too. 😊😅
It’s a nice project.
awesome stuff.
Thank you glad you liked it.
Nice video as usual.
There is also the option to use the Metrol switch alone.. i have one which i use in my 3D printer (nozzle touch sensing) and it has a metal cover already on top of it... so the enclosure and the push mechanism becomes a bit redundant in this case..
Yes you are correct, if I remember right the 1 micron version with only 5mm diameter is $350 and the 10mm sensing diameter about $650. Pricey
@@JBWorx mmm.. i paid mine (from Misumi 1 micron 10mm diam) around 100 Euro (two years back..)
That will be the cost of just the switch I used no housing or anything else. The unit you are referring to is P11DBB sold by Misumi US; it has only a 5mm disc and is $150 that is in my opinion to small of a diameter. Automationdirect sells the 10mm / 18mm version (P21EDBP) for $634 like I said “ pricey”
May i suggest putting the probe on a fixed location, so you don't have any "False readings"
(that is also why i wrote the calibration Routine to work with a toolsetter at a fixed position)
Yes, I cut out the front right hand side of my spoil-board and placed a thin holding plate there so the probe sits in it’s ”home position” this way the tool length macro can be used as it always references that location.
Where I can find the 3D design for metrol one?
It is identical accept the sensor plate has a M5 hole in the center instead of a through hole and the shaft of the plunger is shortened. Very simple simple changes to the optical one. Hope this helps.
Hello,
What program do you use for the CNC machine?
Greetings
I use EdingCNC and I am really happy with it.
What are the cable connections to the board?
The Panasonic sensor has 4 wires +,-, and then your choice of NO or NC. What your board needs I don’t know mine uses a NPN input so that is the sensor I use. Most boards have a direct wire connection or you can terminate the probe onto a plug on your electrical cabinet. I think this is what you were asking ?
I have purchased a tool setter which is NPN but I have no idea where to connect the wires (4 in total) to the eding board, I don't want to guess and risk burning something out. @@JBWorx
Ok I understand. So - goes to GND, positive depends on the power requirement how many Volt dies your Probe need ? So it could go on the 5V + output anywhere. One of the 2 other wires is for normally open or normally closed so pick one does not matter for the first test and connect it to the CNC In labeled Pro (for probe) and that is it. This is the 720 break out board I am looking at right now. But the other boards go in a similar fashion. Hope this helps
Thanks, that's great help@@JBWorx
No problem 😉
Hola sirve para mach 3 ?
Yes should work with Mach3 as well. Just have a look at your board if it needs NPN or PNP
Now the question is: Is it worth it to pay 5x the price for the Metrol for a diy machine, knowing that 0.007mm is already pretty good out of the box! Awesome video as per usual!
Yes that is totally up to the individual. I personally like accuracy … also interesting the first build request I had was to make the Metrol
version and I added a ceramic plate on top. I think it is really up to the parts you foresee making.
@@JBWorx I agree! Do you have a link or a model number of the metrol switch? They might just be easier to install than my panasonics
Actually from Amazon but it is not in stock right now. So Misumi is your best bet.
@@JBWorx Thanks! I've actually found a place that sells them here in America! They are much cheaper than I expected. ''much'', still 78$usd ahah
Yes that sounds right just watch there is a 3 micron and a 1 micron version. Did you see them at automationdirect ?