QtDragon probing and tool touchoffs, again.....

I also forgot to say the tool table must have at least a rough diameter setting for the tool to be probed. the routine will offset the tool in X axis (before probing) if the tool diameter is bigger then the tool setter diameter.

I am also still wondering how to use a my cheap chinese 3D probe with my DIY tool setter. The tool setter is connected to the probe input and the spindle is grounded. On contact it will pull the probe input low. For safety the tool setter surface is spring loaded and will trigger a limit switch, if case the probe failed for some reason.

I have both, 3D probe and tool setter, connected to the probe input. Now that both are spring loaded, the 3D probe only triggers after the tool setter already moved slightly. Because the 3D probe tip is isolated the tool setter cannot react to the touch of its surface.

I have seen a YT video from a company offering tool setters and 3D probes, where the tool setter had a very weak spring and reacted with a first switch (optical) for the tool measurement and had a second for over travel protection. Here the 3D probe could easily push down the tool setter to do the length measurement.

Maybe I go the other way and make the tool setter stiffer, so that the 3D probe is triggered first without pushing down the tool setter. But I am worried if a small tool (0.6mm single flute end mill) will survive the impact into a stiff tool setter at 200mm/min.

Hmmm, makes me think, that I could lower the search velocity depending on tool diameter.

I used THCAD-2 and hyper-sensing from plasmac wired the 24V+ to a touch plate and the 24V- to table frame and after some and / or logic and modifying the touch-off sub routines with m64 m65 commands around the g38 commands. I have as far as I can tell one the most accurate tool height setters available that is safe for even the smallest tooling

cmorley: is the routine code in Python?
Where must the Python-file be stored and how to call it?

Peter

python that calls MDi commands.

probe_subprog.py and probe_routines.py hold the probing routines for versa probe.

Where those files are depends on whether one is using an installed or compiled version.
but here is the repository version:
github.com/LinuxCNC/linuxcnc/blob/2.9/li...ts/probe_routines.py

Thank you for your answer. I have just started with LinuxCNC and am trying to understand the tool measurement and probing options. I re-read the manual for QtDragon and QtDragon_hd yesterday. I want to automatically measure tools to be changed during a milling operation. For example, an M6 T4 must move the spindle to the tool change position. There I will change the required milling cutter and then it must be measured before the milling program is processed further. I have a tool length sensor available at this position. I think that QtDragon_hd offers this function.

Peter