Manual Tool Change

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07 Feb 2021 09:58 #197904 by ljkenny
Manual Tool Change was created by ljkenny
After noticing that the forum posts I've been reading on this subject are a few years old, I thought I'd ask afresh.

There is no way to make tool changes repeatable on my machine, so each new tool needs to be re-touched off in Z.

LinuxCNC blocks movement during an M6 tool change, making touching off a new tool impossible.

Breaking each tool into separate jobs seems like a highly inelegant solution.

I've located the Manual Tool Change Macro, which appears to do what I want, however it is many years old.

What's the current method re-touching-off during an M6 tool change?

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08 Feb 2021 23:56 #198100 by andypugh
Replied by andypugh on topic Manual Tool Change
Do you have a tool length sensor? That makes it relatively easy to configure an automatic tool measurement after a manual tool change.

I will point out, though, that even though my mill has proper (BT30) toolholders I still more often than not use one file per tool / operation.

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09 Feb 2021 02:27 #198110 by cmorley
Replied by cmorley on topic Manual Tool Change
The modified tool change component actually just does run-from-line automatically.
So you can always do similar procedure manually.

If it's a really wanted convenience I can add it to qtvcp screens in the future.
But that doesn't help you now.

It's a shame they jog while paused was not incorporated into linuxcnc.

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09 Feb 2021 14:20 #198145 by ljkenny
Replied by ljkenny on topic Manual Tool Change
It is a shame.

There is a hacked version of the `hal_manualtoolchange` Python script floating around that lets you jog/touch off while pause, but I was searching for a somewhat more official solution.

For now, I have gone ahead and made myself a touch sensor, since the official LinuxCNC install does support manual tool changes with automatic tool length measurement with one of those.

This is probably a better long term solution anyway.

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09 Feb 2021 15:17 #198152 by anfänger
Replied by anfänger on topic Manual Tool Change
To be honest buy you self a tool length setter. It’s the best invest I made (23$ or so its a two stage switch first Tage probe, second Tages estop). You can remap M6 to move to Tool change position, and then touch off. Way more handy than touching of by hand

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09 Feb 2021 15:54 #198158 by ljkenny
Replied by ljkenny on topic Manual Tool Change
Already on it. The tool length sensor is en route from China as we speak.

I've also just finished making my own version to use in the mean time.

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12 Feb 2021 10:12 #198513 by ljkenny
Replied by ljkenny on topic Manual Tool Change
Seems to work with a sensor:

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02 Jan 2022 05:35 #230527 by Eyecon
Replied by Eyecon on topic Manual Tool Change
Can you share how you are running this procedure? Did you have to remap M6?

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02 Jan 2022 11:06 #230537 by ljkenny
Replied by ljkenny on topic Manual Tool Change
I don't recall the details off the top of my head, but I believe this works:

github.com/ljkenny/linuxcnc/blob/master/printnc.ini

Yes, it looks like M6 was remapped.

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02 Jan 2022 11:26 #230540 by Eyecon
Replied by Eyecon on topic Manual Tool Change
Thank you! Do you mind sharing your remap ngc? Your setup seems simpler than most I’ve seen so far so just curious how it works

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