3 ms·
I'm surprised there's not closed loop control for feeds and speeds. Like, it seems relatively easy to tell when the tool is chattering, even a simple microphone
by bglazer 4y ago
I'm surprised there's not closed loop control for feeds and speeds. Like, it seems relatively easy to tell when the tool is chattering, even a simple microphone and audio processing would probably give a decent signal that could then instruct the machine to slow the feed or take smaller bites.
- jacquesm 4y agoThere is, actually. Just not on all machines. Typically there is a current sensor and you can set some pretty tight tolerances on what is acceptable under cutting load. This also helps to detect worn out tooling (though normally you'd pre-program this in advance, but there are workpieces that are so large they'll wear out the tool in less than one pass).
- dekhn 4y agoNot a direct response, but: adaptive toolpath (included in CAM programs like Fusion360) will make feed paths that aim for constant load on the tool, whereas more naive toolpaths will go from almost no load to extremely high load. On my crappy CNC machine it made a big difference in time/effort/money/waste.