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Tool changer option

I'm probably missing something. It appears that the magazine holds a bank of ER collets + nuts with the cutters inserted. How does that result in reproducible tool offsets? One video shows them measuring each tool after each change.
 
kstrauss said:
I'm probably missing something. It appears that the magazine holds a bank of ER collets + nuts with the cutters inserted. How does that result in reproducible tool offsets? One video shows them measuring each tool after each change.
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I don't think the offsets are meant to be reproduced which is why each tool is measured.

Here's another video:
 
watching the video, the tightening & loosening torque comes from the inertia in the spindle, so quite possible its hitting the required torque. Looks to me like wear on the collet nut will be a factor, already can see some marks showing on the nut where it engages the ball(s) in the tray. It is very innovative and accessible to hobbiest level and maybe the wear won't be a big factor for limited hobby use, or it at least isn't a bank account breaker to deal with it (new ER20 nut). I do wonder about the ER20 spindle and how it will wear with repeated tool changes, both on the thread and the collet seat. But even then, a replacement ER20 spindle is still a fraction of what a true tool change capable spindle and tool changer costs.
 
Mike R said:
watching the video, the tightening & loosening torque comes from the inertia in the spindle, so quite possible its hitting the required torque. Looks to me like wear on the collet nut will be a factor, already can see some marks showing on the nut where it engages the ball(s) in the tray. It is very innovative and accessible to hobbiest level and maybe the wear won't be a big factor for limited hobby use, or it at least isn't a bank account breaker to deal with it (new ER20 nut). I do wonder about the ER20 spindle and how it will wear with repeated tool changes, both on the thread and the collet seat. But even then, a replacement ER20 spindle is still a fraction of what a true tool change capable spindle and tool changer costs.
Click to expand...
Not even close to the torque levels I see online.
Here's a screen grab from the Mfg's Discord discussion about torque.
The mention of "taps" and "strikes" is how many times the spindle is ramped up to speed and stopped by the tool changer to tighten the collet nut.
So three taps = three runs to speed, say 1500 rpm and then hard stopped in the changer.
IMHO 17 ft/lbs is not going to prevent endmill pullout under any kind of serious tool load.
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