Most Accurate CNC Machines in the World: Kern Microtechnik?
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- Опубліковано 21 лип 2019
- Kern Microtechnik is the BEST micro precision machine tool company in the world. A top notch company means top notch processes and standards---we're talking machines that can produce and hold tolerances less than 2 micron or 0.00007" (70 MILLIONTHS) of an inch. When cutting tools MUST be hand loaded because the resistance from the ATC motion could break the flutes...holy moly. Enjoy this list of 10 Top Notch Things About KERN!
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Links for this video:
KERN Microtechnik | www.kern-microtechnik.com/en/...
KERN IG
/ kernmicrotechnik
/ kernprecision
Nicholas Hacko Watchmaker Tour | bit.ly/2zU3Cgk
IMTS 2018 | bit.ly/2Pc33XE
Grimsmo Knives Tours KERN | • FIRST to film at KERN ...
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Reach us / CNC Info:
Speeds & Feeds: provencut.com
Download Fusion 360: www.dpbolvw.net/click-9255839...
Online Fusion 360 Training: bit.ly/LearnFusion360
Hands-On CNC Classes: www.nyccnc.com/events
SMW Products: saundersmachineworks.com/
CNC Resources: www.nyccnc.com 5 Reasons to Use a Fixture Plate on Your CNC Machine: bit.ly/3sNA4uH - Наука та технологія
Sorry, folks! We accidentally published the wrong version! This version has a short CAM screenshot explanation of Swarf versus Interpolation - otherwise, no different!
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.
That moment when a mill interpolates a rounder circle than your lathe.
Calculates the law of physics, on the fly.
In Germany, there is a joke with a wire and Engraving Machine skill.
"
The Dutch have developed the thinnest wire in the world, now they want to know if it's really the thinnest.
So send him to Austria. It takes 4 weeks, he comes back, a letter with it: "Wire is too thin, could not measure him!"
Alright, but not sure. So send him to France.
After 2 weeks he comes back, again a letter: "Wire is too thin, could not measure it!"
The Dutch want to know it now but very well and send the hitherto thinnest wire in the world to Germany!
Does it take 1 day comes a call from Germany, German engineer on the phone with a simple question: "Should we cut a thread or pierce a hole?"
"
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.
I work on two Kern Machines.
I mill Electrodes on the Micro and hardened steel parts on a Pyramid Nano, and folks i tell you nothing beats the Pyramid Nano in precision and accuracy. 3D contours easily +-0.002mm.
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......
-Average Machinist: I didn't have tool X and I made it myself
-Kern: Ehm... Very good, well done.
+/- 2um ... ?!
That _is_ insane ...
Back in the day, I used to use microtome blades, which had a silicon carbide core, with a 2um (+/- 0.1um) diamond film, vaccum deposited on. They were, and still are, used to cut tissue samples -- embeded in parrafin wax -- to one -two cell thickness, to be stained for histopathological examination. I was never trained on the pathology side, but as a path technician, you still had to know yer onions.
I remember the first time I removed a brand new blade from its wooden box. Gave me the right jitters, cause as the person training me said, one wrong move, and it will slice clean down to the bone, without you noticing it ... until you start bleeding out, and the nerve pain kicks in ...
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
Great video. It would be interesting to see you visit a freeform diamond turning machine shop. Those machines are used to manufacture mirror surfaces for complex optics and can hold tolerances to within 100s to 10s of nanometers, with surface rms of 10-1nm. I'm a PhD student using them to design and manufacture new compact optics for satellites, and I'm continually impressed by the technology.
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.
Anyone know if there was a Prime deal on one of these last week?
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.
I have visited both factories. Excellent machine tools, and good people supporting it!
I have a feeling John Grimsmo was talking about Kern all the way back to CA. Thanks for sharing this.
Very impressive! So nice to see people who are really into what they are doing.
WOW! My mouth was wide open with amazement through this entire video! Thanks for sharing...
Awesome John, thanks for this!
ATB, Robin
Favorite shop tour yet! Thank you!
This is what I call big league machining the way it is intended to be. This company is committed and dedicated to high end work and this company delivers what it promises. Bravo Kern!
WOW!!! Kern never heard of them before or seen on secondary markets(ha Ha). AWESOME. Thanks for another outstanding video. Please keep them coming.
Great video, mate! Thanks for your effort!
In Germany, engineering, engineer's are regonised equal to Medical Doctors, All scientists, hence part the reason for their success. They also have a very strict heirarchy, where by the shop floor worker, must communicate with his /her immediate boss only to raise any query.
If a technical manager is needed, then all line managers and intermediarys must be present to discuss if required.
Yes, I have witnessed and experienced this whilst installing a machine from the UK.
Great tour John.
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.
What are the feeds and speeds for hair? Asking for a friend.
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?
This has actually changed my life.
That is incredible! Thanks for sharing!
excellent video! learned a lot of applicable thoughts
Brilliant work man 👍 Would have been an absolute pleasure to be there in the facility. Awesome work culture. They look like such friendly guys too!
Probably really tough place to get a job at
Holy cow man! I am totally blown away.
Absolute great! Nice machine, nice measure units.
I am In awe at modern technology and the pace at which it marches forward. I tend to presume that well worn industries like machining have hit a stale mate and dont really progress much but everything seems to be advancing at ever increasing rates. Amazing
Thanks for this awesome video, and Cheers from a proud member of this family in Germany :-)
That is astoundingly impressive. I have to wonder what the waiting time just to get in line to order a KERN machine must be like.
can be better!
Thanks for that John. I want one! Couldn’t possibly justify it, but the bragging rights would be worth bankruptcy. Great video, as usual.
Mind Blowing! Great video guys! as always
Incredible. Great video.
Great stuff. Thanks!
really enjoyed your video. seem to be great machine tools!
Worked as a toolmaker, 15 years ago. Mostly on Mazak and Brother machines. Did a lot of wire EDM. But those precisions on a mill, is insane.
Wow, that was awesome. Thanks.
Equal parts stunning and exhilarating ✅
I have been using a machine shop this past 14 years, but I had no idea that machining had attained this level. Mind blown!
Wow, completely insane... You should have spent more time on that cube at 10:40, the checkerboard pattern made with intentionally different surface finiches is crazy!
Sublime, great example of perfection being the only standard worth working too!
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.
Sweet looking machines. At 6:20, i have the same pallet jack!
I want to see the process of drilling through the human hair. Pretty amazing!
Don't be boring :)
08:39
@@thunderstruck1078 but he wont be the one boring it....
I just want to see the drill
So the big question John.... When do YOU get to ring that bell?
Amazing... It's as if every baby is born with a mechanical engineering degree in Germany.
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
OK, now I have a goal with respect to which machine tool I'd like to own/work with. These look awesome.
Enjoyed. Amazing
This is one tour id rather not have seen just cliff notes but the whole tour!
You should visit Makino and talk to John Bradford about the IQ300 & 500. Very much geared towards the same market as Kern.
That thermal compensation is incredible!
Very Cool stuff there.
I love Kern cnc machines .
It's my dream to own a few of their machines .
high precision and better accuracy at the same time. One of the best ever CNC machining tools
You forgot to mention it's a hydrostatic box way machine, with hydrostatic spindle and leadscrew, it uses no rolling elements in its critical areas, which I think is cool, funny how technology goes full circle and winds up back at a form of plain bearing
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??
Thank you!
This is incredible!! I dont need it for anything in my industry but god damn I want it!
10:53 Wet dream for every machinist
Totally awesome, perfection at its best. And that goes without saying. The global machine tool market is changing. I'd say they are pretty expensive to achieving such tight tolerance. I'm an injection mold engineer, I can realize the work and research involved.
Manufacturing with the intent to achieve recognition for excellence is Endless Work........Hang in There : )
Hi. What metal working fluid is recommended by Kern? What brand?
I have been working for 15 years for different tooling companies. During all those years have heard many different stories about most accurate milling machines: YASDA, MAKINO, KERN, ROEDERS... But which of them is really the most accurate? Would be great to do the high accuracy milling test with machining the same part on all those machines, to find out which one is the best.
yasda maybe i think it can do 0.1 micron
Wow..... dollar or two, but who couldn't use one? Ty for your time brother!
My company has a kern micron multistep this Maschine is amazing
I spotted some pb swiss allen keys. THE BEST. THE BEST. THE BEST.
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.
Amazing machines and equal quality videos. Thanks for sharing.
I did visit the Kern factory last year, as well as the jobshop. It's incredible what does guys can do.
Nice production and really amazing to see precision to that level!
Great entertainment ... Thanks
I will think about this video. Everytime I get called to the exspection department, because one of our job shops screwed a part up on their haas again.
What ever you do don't sneeze or you could scrap the part.
Or launch the parts out of the facility and accidentally breach your NDA...
That akward moment when you have to explain a dropped part....
For that is “fiction”. Incredible and amazing.
You can tickle out more presicion by temperature control, avoiding thermal stretch and shrink of the machine itself. A cabin around would mitigate energy consumption for temperature control around 27°C for europe. The machine should be fabricated at that temperature, as well, to get the max. And some watercooling for the spindle motor, source of heat, for the deluxe version.
I've never heard of this company, but I'm very impressed.
Looks Nice, when you have them test the machines like this. You should have them set a reference plane and make them turn the part upside down and machine it in on the other side to. That way you get an idea of how good their fixturing is. Thats usually wer theese smaller companys fail in my opinion
With the tens of thousands of hours of engineering that went into these machines, my guess would be that they thought of that…
Awesome 👍👍👍
Excuse my French, but holy shit! This is insane. I would love to get my hands on one of these things.
Do CNC drum lathes for single-point diamond turning count? If so, Moore's spinoff Nanotech systems probably has this beaten for machining accuracy. By a factor of over a thousand. 1nm feedback positional resolution.
Very impressive! I also wonder what coolant they use for those very small parts.
chrome505 Tears of joy, or unicorn saliva.
Impressive!!!
How does the air pressure from moving the tool break the tool, but spinning it at 40k rpm does not? And how do you even manufacture a tool that sensitive? And how does it even cut material?
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....
Machining carbide , that's impressive!
Amazing machines !!!! Come on so accurate
How much do these run? A mil?
No need for such a milling machine......BUT I DEFINATELY WANT IT !!
10 times the cost of a MAZAK & similar CNC manufacturers ? (I understand the high tolerances) but wish to know the cost difference
fantastic
It truly is an amazing machine! Probably the best in the world! :)
Amazing
Very cool
Right, machining the end of a carbide cutter, with a complex form like that? I've been in the business for over 30 years and I've never seen that. Impressed with the machine, but also that the pace of technology is such that there will always be more to learn.
Wow! thank you and eye opener for me.
A good day for me I hold all my features to +-.0005" they do 10 times better than that! The thermal control is the coolest part.
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.
< 2um accuracy, I'm very impressed with the machine.
Hello There, Your machines are just Awesome..👍
How do you manage to keep the temperature of Axes LM rails and Ballscrews of the machine at constant? You shared important thing about the Spindle Growth in Z axis. The same happens with Ballscrew assembly of the Axes. please elaborate the techniques to avoid Ballscrew growth during machine operations.? Thank you.🙂
Magic
@@MeneerStein I am sure it's a magic but can you please elaborate it?
IMPRESSED, bet the price is IMPRESSIVE too.
Definitely miss the longer format tours, but I know you said in the last one for the group tours you were going to condense them, I hope you can get back into the longer more personal ones in the future, it really gives a better sense of the company and machines.
Absolutely amazing!
You can clearly see the best world has to offer in this corner of the world. 0:16 Slovenia FTW!!!
Maybe if you want to live behind the Moon xDDDDD
What did you use to cut the carbide End Mill
Had to be PCD or CBN, I knew you could machine solid carbide without grinding, but I can't believe they actually THREAD MILL the stuff. Holy sh*t!
very nice!!! We are only 300km from Garmisch :)
The link to their website is wrong :) it has a "-" between kern and microtechnik.com in the real certificate.
0:27 inside toilet
That's the Deluxe model. :D
Kern truly is amazing.