Tool life management

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19 Oct 2020 12:56 #186579 by COlger81
Has anyone written tool life management code?

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19 Oct 2020 21:59 #186628 by cmorley
Replied by cmorley on topic Tool life management
AFAIK no one has. I think it stats with the fact the tooltable layout is hard coded in linuxcnc so it is difficult to add information to it

There was work on a tooltable database that would allow such expansions of utility but it seems abandoned.

Chris

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02 Nov 2020 11:54 #188096 by spma
Replied by spma on topic Tool life management
I've been interested in this for a while now but haven't seen any work related to it.

I'd like to maybe take a look at what has been done and maybe try to finish it, do you know who worked on it?

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02 Nov 2020 13:47 #188108 by andypugh
Replied by andypugh on topic Tool life management
It isn't so much abandoned as put on the back-burner.

The tool database was documented here: wiki.linuxcnc.org/cgi-bin/wiki.pl?ToolDatabase

A branch containing some initial work is here: github.com/LinuxCNC/linuxcnc/commits/andypugh/tooltable
Take a look around November 2013.
OK, so it is somewhere behind the back-burner :-)

It isn't done exactly as I would do it now. But here is the idea...

LinuxCNC currently passes the whole tool table in to the realtime layer to make it available to the trajectory planner to do lookahead and motion buffering.
We need to abandon this, and accept that the queue is cleared any time the tool data changes. (possibly with exceptions).
Then any time the tool data changes, the system stops and makes a tool data request back to Userspace, where a query is made to get the data that the system needs out of the tool database.
I think that the logical way to do this is with a default, but editable, set of database queries (as the query _has_ to come from C++ code). In the 2013 work I had a Python layer (toolstore.py) , but I think that might not be useful.

Whatever the answer is, there needs to be a way for the integrator to configure the query.

Points of note:
What happens to tool data changes made in the realtime layer (for example when a G10 command is executed. How do we synchronise the internal and database states?

The GUIs need to understand this, and ToolEdit needs to learn a lot.

Back in 2013 I did not know enough Python to modify ToolEdit. If I was doing it now I might even _start_ there.

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02 Nov 2020 13:50 #188109 by andypugh
Replied by andypugh on topic Tool life management
Also be aware that Rene was looking at this more recently.

It's probably worth finding out where he got to, I can't see anything obvious in his github (rene-dev)

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02 Nov 2020 19:30 #188137 by scotth
Replied by scotth on topic Tool life management
Accumulated tool runtime and current limit would be nice to track.

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04 Nov 2020 11:19 - 04 Nov 2020 11:19 #188302 by spma
Replied by spma on topic Tool life management
Ok, just so I understand this, the problem here is that the current tool table is somewhat locked inside the realtime layer and to much stuff depend on it being there, so extracting it means a whole lot of other components need to be updated, right?

Now, assuming we can move the database onto userspace, I think that in the early stages we can create some kind of realtime interface to the new userspace database that mimics the current database API, so we don't need to mess with the components that depend on the database being on the realtime layer.

Any thoughts on this??
Last edit: 04 Nov 2020 11:19 by spma.

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24 Feb 2024 20:41 #294250 by faber33
Replied by faber33 on topic Tool life management
Hi. Is there any progress on this topic?

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