Tool breakage detection system

Yup, pretty much what I had in mind. It confirms that most things I imagine have already been commercialized.

Todd Zuercher wrote: Here is a video.

Demonstrated on a tiny lathe, and not even using a real cutting tool.

Monitoring axis force might be more telling than spindle load, probably depending on the machine.

Ideally, I would think you would want to monitor several things, axis loads, spindle loads, and vibration or noise. But unfortunately you would still need a base line run.

That was ......well disapointing, the video i mean. It is not doing the only thing it is made for, cutting.
Bare with me for a moment:
All of you have smartphones, install the Physics Toolbox, open it, swipe from left, chose accelerometers, place the phone on the machine somewher that it will not fall while cutting, turn on the machine and check the screen, move all axes and check the screen, now cut something doing light cuts.
The point is, the diference betwen a not cutting machine and a cutting machine is huge, even at light cuts.
The other point is, i am fairly certain that the system i described above with at least 2 or 3 sensors is much more likely to work much much better that the systems described and seen on the web, case in point the video above, at a 20 to 40 $ price tops.
I have never seen those on a production machine ever, i have seen plenty of machines. The only one i have seen was the one i mentioned before, costing 40.000, mounted on a mori costing at least 200.000 and it all failed miserably on the first test, after 2 days of tunning.
I am not blaming the technology or the experts or anything or anyone, it is just that some things do not work beter by complicating them, never ever. I could add this last line to another thread going on in this forum, on another subject that has the same bottom line, namely simple is better.
Sorry for barging in, i will retreat now.

Is there anything new on the topic? For many cases, the spindle load limit is sufficient.

ive always looked at this problem like on a long run you have enough xp to know this 1/16 ball nose is gonna last 30 mins in this unobtanium. so you have a breakpoint where tool is probed on the way out if its off by .xxxx call it worn go get next spare tool. continue program if probing shows its missing half the tool then m30. like you want to know the drill is still there before the reamer goes in hole.

i program lights out horizontal cell we try to keep it simple let the machine do the thinking.

but the local kennametal rep had this whizz bang box that he put a few magnetic probes on an old haas that's been making same part for 20 years and it figured out the harmonics gave a feed and speed adjustment and got a 5% better cycle time. that area is out of my circus but walking by it it sounds great in the cut. that box can also sense tool breakage so contact your local kennnametal rep and ask him for the secret sauce. this is what the day shift programmer told me. we spend high 5 figs with kennametal a year the rep comes when we call. goodluck