What a brilliant video. It clearly shows processes I have only speculated about in the past. As a machinist, metallurgist and electron microscopist it ticks so many of my boxes. I think this is the most illuminating thing I have seen on RU-vid. To answer some other questions, the "triangle bit" is High Speed Steel (as it says in the caption) and the imaging method is Scanning Electron Microscopy. The difficulty of doing machining inside an SEM chamber should not be underestimated.
It's mind boggling to see such a magnification of the micro structure of steel and how it reacts with the different cutting tools-- you can actually see the hairline fractures of the chips starting around 1:25 from steel exceeding it's yield strength, becoming brittle and fracturing. Absolutely beautiful and stunning!
Love it! Love the music, too. I'm dumbfounded that you were able to get a high-speed image of machining inside an SEM chamber. I agree that this is one of the better videos on RU-vid.
1,Since I work for Iscar, the second largest carbide manufactuer in the would, and they call it BUE, Im going with that. 2, This is my channel, Ill call it what I want, espcially since I do have my facts right. 3, Your channel is all music, I would not post negitive comments on your channel since I know very little about the music business. Have a nice day!
This looks so much like the formation of a landscape, It's interesting how the same laws that built our planets valleys and mountains seem to be present at such a microscopic level.
I'm fairly certain this video was produced by Valenite back in the day. I remember seeing it in 1993 when I got into cutting tool sales full time. Notice the tooling being used is HSS and the coatings are TiN. I've seen this shared recently by some of the largest carbide manufacturers in the world. The more things change, the more they stay the same.
Hello Brian, hello Rick, or anyone! I'd be enormously grateful if either of you can say who actually created and first published this video. It seems to be quite widely shared on the internet but with no credit details.
According to my extensive research of looking below the video, its "Die Zauberflöte (The Magic Flute), K. 620: Overture (from The Magic Flute)" played by London Philharmonic Orchestra.
This appears to me like a carbide insert commonly found on facemills. Its likely not as small as you think. The chip being sheared off is likely .015-.020" thick which is reasonably large as far as machining is concerned.
The spikes are due to stress fractures in the cut metal. As for the difficulty of cutting so close to the surface, you're on the right track, but backwards! As the metals being cut change and it gets harder it is to cut the steel, the blade gets pushed higher.
Is the accumulation of material at the tip, that then gets deposited/left on the work piece, a problem? What's the cause of that process? The tool not being sharp enough, or is it the material itself? Machining is fuckin' fascinating!
That is called "build up edge" BUE. Yes it is a problem. Most of the time it is caused by not enough speed in the cut. Dull tools and material is the rest of the problem. The trick is to find the right speed and tool shape to minimize BUE.
So with enough speed, BUE doesn't have the time to form or doesn't get big enough to be a problem? Also - is the cracking in front of the tool also a problem, or is it actually how the material comes off when you cut it?
What I find tremendously interesting are the spikes that launch out linearly from the surface during the cutting process. It seems they are illustrations of the role surface and inner tension in a substance interact. It also seems that the closer the blade is to the surface, the harder it is for the blade to progress. Why is this? Does this illustrate the role oxidation and other processes play @ the surface level?
You might be able to find this song on CD somewhere, I don't know, maybe at a store? and then you could have it and hold it and not be aggravated. And, really, isn't that what it's all about? Being happy?
Fantastic. When was this filmed? Amazing to see the edge not actually doing the cutting on lots of those - perhaps we need to look again at what 'sharp' means?
Not true, necessarily. This was obviously filmed under an electron microscope, which only captures images in the black and white pigment range. In reality, steel has a variety of subtle pigments, not just grey, black, and white.
Wouldn't it be better to give the leading edge of the cutter a concave curve? That way the "splitting angle" will be less and the material has more space to go. Perhaps it would bunch up less?
This looks like the fine work of E.D. Doyle. Where did you get the video from? He has a whole bunch for different materials and for coated/uncoated tools.
How great would it be to have a button that you can click on the mute the video and while watching, you could listen to whatever song you wanted to. How awesome would it be?
Hello Rick Steinard, hello Brian Barth, or anyone! I'd be enormously grateful if someone can tell who actually created and first published this great video, and when. It seems to be quite widely shared on the internet but with no authorship credit details.
