OK maybe this was too aggressive even for Adaptive Clearing ;)

[Washout]

Happy New Year all,

A quick video of some aluminium work, where I pushed adaptive clearing a bit too far. Parameters were DoC 15mm, stepover 3.2mm optimal.

Interestingly it was the spindle that overloaded and shut down rather than chip weld or the usual horrors..

[JAZZCNC]

Ouch.!! Yes touch aggressive.

Just Did test to see what i-machining would spit out for same material and cutter/flutes etc at it's most aggressive setting which is level 8.
So for simple circle pocket 15mm DOC gave 16810rpm 3769 feed 1.970mm stepover.

Level 3 or 4 is what I normally run at.
Level 3 12878rpm 2117 feed 1.116 step
level 4 13431rpm, 2233 feed 1.550 step

What feeds and RPM was that.?

[Clive S]

Its good to see cockups (we all make them) well at least the cutter didn't break What was the RPM?

[Washout]

Ah thanks for that Dean, I'll retry with level 3 and see if that works. It should work as it wasn't the usual chip weld, but rather the spindle went into "DU" which is an Amp overload iirc

My F&S's were F2760mm/min and 17,642rpm - GWizard generated with HSM and roughing options checked.

The whole video (once I've finished editing) has 6 and 4mm tools cutting fine with similar strategies - the 6mm was at 10mm DoC, which was frankly astounding considering previous experience.

[njhussey]

As Clive says, nice to see cock ups as well as triumphs.....I like the way the sacrificial bed moves to save the cutter when the spindle overloads

[JAZZCNC]

Ah thanks for that Dean, I'll retry with level 3 and see if that works. It should work as it wasn't the usual chip weld, but rather the spindle went into "DU" which is an Amp overload iirc

It will work because level 3 isn't over aggressive. But Even at that speed scares the crap out of me when goes flying around into corners etc and more chance catching shooting Star than hitting E-stop before tool breaks when shit hits fan.! ..

[Clive S]

As Clive says, nice to see cock ups as well as triumphs.....I like the way the sacrificial bed moves to save the cutter when the spindle overloads

Eyes like a SHrat

[JAZZCNC]

I like the way the sacrificial bed moves to save the cutter when the spindle overloads

To be honest I think that would have contributed to the stall slightly because if you watch carefully it starts moving around soon into the cut and because the cut was so aggressive was pulling material into the cutter increasing the step over.
When first watched saw that straight away and first thoughts where it had pulled into cutter but after checking i-machining can see it was bit aggressive but just for laughs think I'd try again with stiffer setup.

[Washout]

As Clive says, nice to see cock ups as well as triumphs.....I like the way the sacrificial bed moves to save the cutter when the spindle overloads

All in the cough....design...cough cough ;-)

[njhussey]

All in the cough....design...cough cough ;-)

Good safety feature