Most Accurate CNC Machines in the World: Kern Microtechnik? 

will we get a longer version too?

@@Chriss120 Perhaps if I visit again!

@@nyccnc Just bought a 2nd hand VF OE to at least bring my machinery from the 60s to the 90s and go CNC, modern! After watching this I feel like a caveman again. Thanks Kern.

NYC CNC .You should consider visiting DMG Mori in Germany

Wow! I saw your tour but I missed the accuracy specs. Do you know how these compare to stereo lithography or whatever it's called? ...the "machining" that is done with the same technique used to make computer chips for micro-mechanical devices like accelerometers & such. Not that I'm machining things this small, it's just interesting. The smallest tool I've dealt with was a drill about .019" diameter.

Calculates the law of physics, on the fly.

This is how Kern was possible; Germans have jokes about micro-precision in their folklore !

My Swiss German friend told me a similar story about the Americans proudly sending them some very small drills almost as thin as a human hair or something of that nature for the Swiss to admire, the Swiss sent the items back to the yanks with holes drilled in it. And he wasn't joking.

lmfao you guys are amazing

And in my country we have a joke too, when we need some stuffs from a store, the shopkeeper would say "its german product for every superior quality" and would say "its chinese" for every lower quality product,, once i bought a drillbit, i questioned, why its so expencive, the shopkeeper said 'its germany" while its clearly writen made in usa

It will be informative if you show us how a german can pierce a hole in the thinnest wire in the world? Mr. tau... I am expecting your answer.

Thats fucken unreal .Intersting both Hermle and Kern are both on Heidenhain ,my favourite but but not popular.

@@markmall7142 i feel like it's all about what you get used to. I even know people who genuinely love mazatrol......

only 100nm film? thats 1000 atoms! 2um? 2000x too big!

The company that I work for has 2 kern nanos. We interpolate bores with a tolerance of +- 0.75 microns.

@@chishgre makes the +-.01mm on our mill seem like open tolerances

Okay that's scary af

@@chishgre Iv never done anything like that, smallest tightest Iv done was a .100 thou bore bored on a dmg mori to a tolerance of plus .0001 minus nothing with deltronic to check at the machine. No chiller for the coolant either so had to account for shrinkage and oversize by .0001 . Made extra for the ones scrapped due to shrinkage

These machines sound exactly like LT Ultra? Surely there are other makers, but I ran into LT Ultra booth at one show and the stuff they do is plain mind blowing. I got even sample part from them.

Interesting video and impressive machines, but I didn't see anything really new in precision terms. I worked for a company about 30 years ago that was doing diamond turning to that sort of precision and it wasn't especially new then. WRT to the video's mention of carbide and your mention of mirrors, they tendered for machinery to make the E-ELT mirror segments out of various materials including carbide and to get the required finish the final stages involved plasma polishing. The tolerances were such that when polishing the (several inch thick) mirror segments they had to correct for the deformation caused by gravity. Bonkers - I'll stick to software.

Russia and the USA stole almost all of their tech from Zeiss and Mititoyo after WW1 and more after WW2 not your tech and Zeiss is again half a mile ahead of most other companys

@@vilts The two biggest players in this market are Moore and Precitech. My company owns a few of them and we produce molded optics and small medical devices.

@@prinzeugenvansovoyen732 oh what a load. I don't know about Russia but the Germans and the Japanese were regularly copying American machine tools. Moore manual jig boring machines predate WW1 and are accurate to a micron in all axis and in flatness and parallelism and their design principals are still embodied in these Kern machines. Your nationalism is what started those world wars, keep it in check pal.

LOL

I already checked Harbor Freight, and it's a no go.

@@thzzzt Harbor Freight never heard of 'no-go'

Not bad I guess... Need one or two of those in ma garage.

A lot of German are going truth 4-year apprenticeship as CNC machinist, they work 3 to 4 days a week in a company and then they go to university to study Engineering. So you are 30 years old and you have no competition at all, especially in countries like USA or Canada

Germans do extemly well with engineering. It is like it is.

Well ! it's Not ! The S.D.R.R !! Of the U.S A !! Is It !!??

@@davidwillard7334 holy shit man, so aggressive lol

And yet you've had all that (and more) once upon a time. America is committing suicide using "diversity & inclusion" - all standards have been going down for quite a long time. "Disparate impact" legislation? What you have allowed them to do to you is incredible to watch from the outside! Like you have all been brainwashed.

@@thunderstruck1078 well said

@@hotfuzz1913 thanks

@@thunderstruck1078 Moron. "Diversity & Inclusion" or "Disparate Impact" have nothing to do with high precision manufacturing, but are the excuses of a simple minded, racist moron who does not understand economic scale.

can be better!

if your planning on cutting hair, try to keep it under 1 ouch per minute, use freshly lapped clippers. and use beer on your friend as coolant. as for accuracy, try to keep a steady hand. hope this helps :D

Depends... is it a RCH ? 🙄😏

beard or head hair, other?

Don't be boring :) 08:39

@@thunderstruck1078 but he wont be the one boring it....

I just want to see the drill

Or launch the parts out of the facility and accidentally breach your NDA...

That akward moment when you have to explain a dropped part....

That's the Deluxe model. :D

Kern truly is amazing.

10 years from now these machines will look like garbage compared to the new shit. The swiss lathes I use we regularly make 10 millionths (.00001) offsets and the machine takes them and moves no problem. I don't see how 70 millionths (.00007) is breaking news. We have final product tolerances on medical components of 50 millionths (.00005). Maybe these are the most precise mills or something? I am so confused.

@@chuckphilpot7756 Lathes tend to be single axis while VMC's are multiple, 3 or more. You tend to compound 'in-' or 'accuracy' issues each time you throw an axis in the mix. So yeah, it's really good, fantastic actually. We still use a south bend belt driven lathe for roughing materials, low power, fairly accurate and like everything that has its place a great learning tool.

@@epop3014 I hope you are referring to just your lathe as a learning tool and not all lathes. Swiss lathes are 10x as complicated as this mill. Single axis? 7 axis with an additional 3 provided by the subspindle assembly. Nope, it isn't a single axis or just a lathe. And no lathe in the world is a single axis. Lol. Even your "learning" lathe. Standard lathes are xz motion, while typical mills are x,y,z. Oh and you do know that along with vmc's they also have hmc's htc's and vtc's. All of which can have as many axis as you can throw money at. The only difference between a lathe and a mill is the inversion between spinning work and spinning tool. My swiss lathes are true 5 axis machining with simultaneous back machining. Mills aren't difficult in the least. It isn't like you are hand programming the mills. Or have 20 different mill spindles inside of a opposing spindle swiss. There is a reason they pay Swiss lathe guys more than typical machinists. But I digress. I clearly stated swiss lathe, it isn't my fault you didn't fully understand what you were talking about before replying. I also work with swiss lasers.

@@chuckphilpot7756 I understood. Swiss machines are a world apart from standard lathes, mills, of any kind. The precision is incredible mainly due to the precision of where the work is done and the precision of the stock material used. It is still essentially a single axis moving a turning part. There's a reason why lathes were first in the evolution of machinery. They are apples and oranges. Lasers, pew pew pew!

@@epop3014 Actually lathes were the first in machinery because you can build a mill with a lathe. Also swiss lathes came way after mills were invented. There is a reason for that. So basically what you are saying is that you have no idea how a swiss lathe works, correct? Discrediting a multi axis machine because of the precision and thus reducing it to one axis so as to exclude it from the diacussion to make your side of it valid is not a legitimate arguement. Again I will state the obvious since you didn't seem to grasp the fundamentals. The only difference between a lathe and a mill is the rotation of work/tool. A lathe can be used as a mill and a mill as a lathe. So please tell us all how a 5 axis mill is more complex and thus better than a 9 axis swiss lathe with full 5 axis milling capability on not only the main turning spindle, but also the sub spindle as well allowing back machining that isn't possible on your precious mill. Servo rotary or linear motors either turn a ballscrew or operate on a slide. Basically what you just said to me is that 9 axis are pretty much just 1 because surely you can't be wrong about the unparalleled accuracy of the mill you are defending. Lmfao. That same flawed logic applies to your precious mill. By your logic mills are only single axis as well, because the tool always rotates around the main axis. Rofl.

I'm surprised he didn't mention hydrostatic box ways too. They dampen vibrations a lot better than roller bearings.

Correct!! 👍

But hydrostatic box ways will not be the only reason to produce parts with 2 microns accuracy. isn't it??

yasda maybe i think it can do 0.1 micron

Best I've ever been able to do is +0.0001 -0.0000 on small parts, and +0.0000 -0.0002 on a 10" long hardened steel bar. To get that small of a taper out I adjusted the tailstock quill lock handle. Tighter pushed it towards the operator, not as tight pushed it away from me.

Max I agree. I'm a cnc service eng and have been using the same set everyday for the last 20 years. No wear and still happy with the purchase, The punches and Chisel set are even more impressive.

My favorite is how the balls dont seize up in the fastener head as you increase angle, they just cam out. Have you ever broken one? I haven't but I'd hope they yield before snapping.

Moving the tool laterally will apply pressure to one side of the tool, bending it. Brittle materials like carbide are very susceptible to bending loads, therefore they will break. Spinning the tool will cause a torsional load inducing shear stress, which brittle materials handle much better. Not to say, it is a symmetrically applied force, therefore resistance to breaking will be much higher

This bothers me as well. If the tool changer is accelerating the tool at 100g, I can see how that could damage finer tools, but if the tool cannot handle moving through air, then how can it move through something much denser like aluminum. The cross section of that tiny tool isn't going to present much resistance to movement through air ( or aluminum for that matter ). Additionally, the human tool changer is moving the tool through air without damaging it. In any case, I would think that a premium machine company could identify a rack of those tools to be delicate and provide a low impact tool change cycle, or even a facility to programatically modify the tool change cycle to accommodate this kind of tooling.

@@therealstubot Yea, except that these applications are probably very far and few between. I am sure it can be done, but if they have 25 jobs a year that require this type of tool, then designing and building a tool changer is probably not high on the priority list....

Probably really tough place to get a job at

Maybe if you want to live behind the Moon xDDDDD

dam straight. nothing quite like a 63.5x improvement over your local state of the art.

Well when finishing holes with hone or a reamer they are easy with in .0005

@@destro513 only 6.35x less accurate than the 2um Kern

where is the shop located?

@@bobjimenez4464 ireland

With the tens of thousands of hours of engineering that went into these machines, my guess would be that they thought of that…

very slowly

I know man. You think you have it good then Saunders comes along an shatters my reality.

All the way back

damn straight, spread that round the river bend

Magic

@@MeneerStein I am sure it's a magic but can you please elaborate it?

a little while ago I saw a used 2010 Kern model 44 on machine seeker It's only a 3 axis machine and it was €148,000. Hopefully that will give you an idea.

@@rashesthippo surprisingly cheap

This type of market is more governed by the customer need. First I would guess that every machine is essentially a customized machine for that customer. 2. Since their only producing around 100 machines a year customer priority us going to become a factor. Even if the price isn't an option, just because a customer wants one doesn't mean KERN can justify selling it to that customer when others have a greater need. Medical, aerospace, biochemical industries and such. Machines like these go beyond money. Ethical, moral, and political issues come into play. Who's the customer and what is their stated purpose for the machine? Nobody in their right mind for instances is going to permit a nation like Iran, or North Korea, etc to get their hands on one of these. I'm sure the German government, and other government agencies track who is buying, or trying to buy one of these machines, especially the newest highest capable machines. There's a reason that Kern doesn't need to advertise very much.

Diamond, what else?

It uses the finest quality coal for power.

Gotta be careful... Lots of intellectual property is stolen nowadays.

They uses Hydrostatic Liner guideways

2:47 ;)

We added a short CAM demonstration of Swarf versus Interpolation - that's all!

@@nyccnc thank you for the clarification and I see that you have now added a pinned comment with that same info

I agree, them and the Japanese have dedication to accuracy.

Well I know there is even a more precise machine tool builder in the US: www.nanotechsys.com