This reminds me of that old cartoon where couple of workers were heading to a pub "to have a few beers and forget for the day about their jobs", and the works they were leaving had a big "United Brewery Co." sign on its gate... ;-)
I wonder if tolerances that tight were actually necessary, or if it was just some Boss going "I want it _exactly_ on dimension." Actual engineer: "But, sir, we need to give them tolerances." Boss: "Tolerances? Bah, these machinists are so fickle. Okay, what's the smallest they can get the part size wrong?" Engineer, wincing: "Well, they _can_ get down to one thousandth, but that's usually for much smaller--" Boss: "Then put one thousand on the paper. Come on, I want this order out by 3." Engineer: "For which measurement?" Boss: "All of them! You think I want a drive shaft that's the wrong size?"
You know how it is. Boss: I got this job 0.001" tolerance. Can you do it? Dumb me: Yeah, I guess. Boss: Ooo. By the way, this thing is almost 4 meters long and there is a little runout .
@@ChrisMaj runout of 0.001" for 4 meters long shaft is nothing . You can always do grinding and make this much tighter if you need it , but this will cost much more .
Lord i miss manufacturing! Been enjoying your videos! Wish i could have taken some vids of my past work. CNC, Conventional, QA, QC, NDT/PT MAG & UT was my past Cert’s.
Wieder einmal ein sehr schönes Video! Am liebsten würde ich hinter Dir stehen und direkt zuschauen - obwohl ich weiß, daß dies niemand mag. Man läßt sich bei der Arbeit nicht gerne über die Schultern schauen. - Hau rein! Weiter so! Ich freue mich schon auf das nächste Video! Beste Grüße aus Dresden! PS.: Den Australier von CEE schaue ich mir auch sehr gerne an. Der hat es auch drauf!
Ja, du hast Recht damit, dass du über deine Schulter schaust. Das ist, wenn die Dinge schief gehen. Kurtis und seine Frau aus CEE, sie haben das ganze CZcams-Ding herausgefunden.
It's amazing to hold such a tight tolerance on such a long piece. Great skill. The ways must be perfect to hold .001" on a diameter. My old Okuma could never do it.
I kolejna robota na plus , że też często przychodzi materiał zdeformowany i z tak małym naddatkiem a ty się pózniej męcz na maszynie jak to ogarnąć . 👏👍
@@PawelSzkoda Polak, Polak tylko pracujący w Stanach i trzeba było się przestawić na cale. Jak narazie to mało mam rodaków na kanale, a poza tym to i tak nie jest jakiś szkoleniowy kanał. Co tam poskładam to tyle widać.
Ooo zmora każdego tokarza.. krzywy pręt.. i to ten to był porządnie krzywy.. 7 dych do zebrania a tam jeszcze bije.. ale trafiłeś na pręta to.. współczuję.. przerabana robota z takim bananem .
@@ChrisMaj no to kij w dupę temu co to zamawiał .. nie lubię jak ktoś tak robi bo zawsze może się coś odwalić jak np u ciebie .. dobrze że udało ci się to bicie zbić do 2 setek .. ;D ale pewno co się nawkurzales to twoje . Pozdro ;D
Amazing work. I'm not a machinist but I can appreciate the magnitude of getting within a half thou on something so massive. What does something like this go into?
Więcej materiału zbierasz, bardziej odpycha narzędzie przy dużym biciu. Zauważyłem że po ciężkich sztukach niekiedy koń ucieknie parę tysięcy. Niekiedy trzeba pocyganić któryś tysiąc w programie.
@@ChrisMaj maszyna ma sterowanie NC, możesz korygować stożki w programie? I drugie pytanie dlaczego podtrzymka jest tak blisko wrzeciona, a nie powiedzmy w połowie. Świerzak ze mnie, i mam narazie takie rozkminy. Toczę w kłach bez podtrzymki wał na 900mm i o średnicy maks. 78mm, udaje się zrobić wymiar w 0,01 ale muszę korygować stożek w programie bo robi 0,07 na 140mm. A to co widzę u Ciebie jest niesamowite 25 mikronów tolerancji na takich gabarytach, sztos.
I do shafts like this all the time not tight tolerance usally plus 0 minus .003 inches for the whole length with a straightness of no more than .015 inches. I usally drop a s/r in near the chuck get it as close as I can and work from the chuck back toward the tailstock by cleaning up a 3inch long section to make a s/r location. Set the rollers and then move about 12 to 15 inches toward the tailstock and repeat the process. Once you get the s/r just passed the center point of the shaft you can go to the tailstock and ripped the material off. I usally go .150 deep a side so .300 total and they always come out fine.
Wow even the bearing fits on rock crusher bores I repair are more generous than that for example 400.00- 400.05 mm, at least I get a couple thou to try to hit. And the housings typically are not bent! How many times did you have to flip it end for end?
@@FuzzyPanda53 that's a long course you have to take to figure that out. sometimes the stress in the material makes it dam near impossible to get it straight. flipping it lots, keeping the forces low, aka light cuts and minimal tail stock pressure is important. also after roughing letting it "rest" for a day can help some of the stress come out. basically you have to just take it as it goes with long parts you use your years of experience to figure it out and come up with the best outcome, aka get a pro like this guy to do it ;).
That’s awesome lol Biggest I’ve done is 245”x10” 17-4 ph. Do you guys ever press the shafts to straighten them? We had a giant hydraulic ram captured around a very large and long i beam. I’ve bent some damn thick shafts 😂
A 4 jaw chuck is more adjustable and way more versatile than a 3 jaw. With a shaft with this kind of run-out you can throw the job out at the chuck to make the middle run better. I do 4140 shafts like this alot at my job. We have the same machine as him with a 4 jaw chuck. I had to turn a shaft like this that had .500 runout in the middle if I ran it true at the chuck. So instead I threw the runout to the chuck and made the middle run around .300. It makes it alot easier to machine.
Hey Chris, could you do a video of how to use the manual guide on fanuc control like programming a part from start to finish that would really help me out?
This job looks like a serious pain in the bum. You almost need a vertical lathe tall enough to cut bands for steady rests, but back in the real world where you use what you have...
Gun drilling is primarily used to drill deep holes beyond what is possible with conventional machinery and tooling such as twist drills, by using high pressure coolant for clean chip exhaust, even at extreme depths.
It scares me watching this, doesn’t bare thinking about what devastation would happen if you lost pressure on the centre. I was wondering how do you get the centre drilled ?thanks for Chris 👌🇬🇧🇪🇺🇺🇦
I never go to work thinking I'm gonna fuck up something today. I'll crash my machine today. The lathe is going to hurt me today. If I did, I'll probably be working in the office somewhere. Don't get me wrong, I have a lot of respect for my machine, and I know she can fuck me up in a split second. That why you never get to cocky around any machine. The centers were done on a horizontal boring mill.
It scares me too . I understand that machine is capable to do that, but there is always some risk. Second thing is price of the stock, and stress not to make any mistake to scrap it . Pozdrawiam i powodzenia :)
What industry is this part for, do you know? Awesome job as always...! Watching raw ugly stock changing into beautiful shiny part is really satysfying.
I am working on a shaft right now at my job that is 3.5 o.d and has .250 runout in the middle. It is 124 inches long and is 4140. Looks just like this shaft but smaller. It has been kicking my ass. It took me 4 hours just to get the s/r locations in so I can start the process of ripping the shaft down to 3 inches.
Qualité 6 en tournage extérieur ! J’ai un doute . Il faut travailler avec les intervalles les plus larges possibles. C’est au concepteur de le savoir . Sinon les prix s’envolent. La qualité coute cher . Si elle est inutile......
Enjoyed watching this, great job mate with what you had to work on 😎👍
CEE and Chris Maj my machine tool heroes 👏👏👏
Kurtis is in the house 😉, thanks man for stopping by.
This reminds me of that old cartoon where couple of workers were heading to a pub "to have a few beers and forget for the day about their jobs", and the works they were leaving had a big "United Brewery Co." sign on its gate... ;-)
Brasil!
@@ChrisMaj You opened with "banana". Who did you think was going to show up? LOL.
I wonder if tolerances that tight were actually necessary, or if it was just some Boss going "I want it _exactly_ on dimension."
Actual engineer: "But, sir, we need to give them tolerances."
Boss: "Tolerances? Bah, these machinists are so fickle. Okay, what's the smallest they can get the part size wrong?"
Engineer, wincing: "Well, they _can_ get down to one thousandth, but that's usually for much smaller--"
Boss: "Then put one thousand on the paper. Come on, I want this order out by 3."
Engineer: "For which measurement?"
Boss: "All of them! You think I want a drive shaft that's the wrong size?"
You are definitely a good machinist. My hats tipped to you. Great video
This is some very impressive machining. Thank you so much for sharing your experience with us!
Fantastic work. Long shafts are a pain. That job should have been ground with those tight limits! GG from the UK (49 years a turner) Retired now.
You know how it is.
Boss: I got this job 0.001" tolerance. Can you do it?
Dumb me: Yeah, I guess.
Boss: Ooo. By the way, this thing is almost 4 meters long and there is a little runout .
@@ChrisMaj runout of 0.001" for 4 meters long shaft is nothing . You can always do grinding and make this much tighter if you need it , but this will cost much more .
Lord i miss manufacturing! Been enjoying your videos! Wish i could have taken some vids of my past work.
CNC, Conventional, QA, QC, NDT/PT MAG & UT was my past Cert’s.
Challenge job there mate but no trouble to you in the end, experience is key as they say👌 thanks for sharing 👍
“Beautiful, just beautiful”!!! 👏🏾🙌🏾🔥!!!
Wieder einmal ein sehr schönes Video! Am liebsten würde ich hinter Dir stehen und direkt zuschauen - obwohl ich weiß, daß dies niemand mag. Man läßt sich bei der Arbeit nicht gerne über die Schultern schauen. - Hau rein! Weiter so! Ich freue mich schon auf das nächste Video!
Beste Grüße aus Dresden!
PS.: Den Australier von CEE schaue ich mir auch sehr gerne an. Der hat es auch drauf!
Ja, du hast Recht damit, dass du über deine Schulter schaust. Das ist, wenn die Dinge schief gehen. Kurtis und seine Frau aus CEE, sie haben das ganze CZcams-Ding herausgefunden.
Superbe usinage de grosse pièce avec une précision incroyable, bravo Chris 👍😎
It's amazing to hold such a tight tolerance on such a long piece. Great skill. The ways must be perfect to hold .001" on a diameter. My old Okuma could never do it.
that was awesome to watch, thx for making these
Great job Chris . 👍
Doing my best 👌
It takes a lot of skill and experiens to make a shaft with those tolerantie ! Verry nice job 👍👍👍
Yeah, sometimes they think I'm a miracle worker.
Another great job Chris.👍
I kolejna robota na plus , że też często przychodzi materiał zdeformowany i z tak małym naddatkiem a ty się pózniej męcz na maszynie jak to ogarnąć . 👏👍
Tak, a później tyko zaglądają i pytają czy wydało wszędzie. Trzeba było jeszcze mniejszą średnicę zamówić.
@@ChrisMaj he he i często pytanie kiedy będzie gotowe 🤪
@@ChrisMaj od dawna miałem pytać czy Polak 😀
Dziwnie się czyta te calowe wymiary tylko 😕
@@PawelSzkoda Polak, Polak tylko pracujący w Stanach i trzeba było się przestawić na cale. Jak narazie to mało mam rodaków na kanale, a poza tym to i tak nie jest jakiś szkoleniowy kanał. Co tam poskładam to tyle widać.
Quite a challenge... and very well finished.
the DNMG good choice for straightening the bar and 25 microns runout 👍
11:28 awsome surface finish
Chris, I'd be happy with that result too,
Good wrk.
Ooo zmora każdego tokarza.. krzywy pręt.. i to ten to był porządnie krzywy.. 7 dych do zebrania a tam jeszcze bije.. ale trafiłeś na pręta to.. współczuję.. przerabana robota z takim bananem .
Nie dość że długi i krzywy, to jeszcze średnica materiału zamówiona tak na styk.
@@ChrisMaj no to kij w dupę temu co to zamawiał .. nie lubię jak ktoś tak robi bo zawsze może się coś odwalić jak np u ciebie .. dobrze że udało ci się to bicie zbić do 2 setek .. ;D ale pewno co się nawkurzales to twoje . Pozdro ;D
Good job you have done a few before Chris...!! No wiggle room ffs lol
Very nice work. Gave me anxiety seeing the specs, and pulling it off without grinding is not for the inexperienced.
Very nice as always Chris.Hi from Cape May N.J.
Doing my best. Thanks for watching.
прекрасная работа
Amazing work. I'm not a machinist but I can appreciate the magnitude of getting within a half thou on something so massive. What does something like this go into?
Steel mill industry.
Bierzesz małe ap żeby uniknac banana? Dlaczego przestawiasz kąt na koniu?
Maszyna trzyma wymiary?
Więcej materiału zbierasz, bardziej odpycha narzędzie przy dużym biciu. Zauważyłem że po ciężkich sztukach niekiedy koń ucieknie parę tysięcy. Niekiedy trzeba pocyganić któryś tysiąc w programie.
@@ChrisMaj maszyna ma sterowanie NC, możesz korygować stożki w programie? I drugie pytanie dlaczego podtrzymka jest tak blisko wrzeciona, a nie powiedzmy w połowie. Świerzak ze mnie, i mam narazie takie rozkminy. Toczę w kłach bez podtrzymki wał na 900mm i o średnicy maks. 78mm, udaje się zrobić wymiar w 0,01 ale muszę korygować stożek w programie bo robi 0,07 na 140mm. A to co widzę u Ciebie jest niesamowite 25 mikronów tolerancji na takich gabarytach, sztos.
I do shafts like this all the time not tight tolerance usally plus 0 minus .003 inches for the whole length with a straightness of no more than .015 inches. I usally drop a s/r in near the chuck get it as close as I can and work from the chuck back toward the tailstock by cleaning up a 3inch long section to make a s/r location. Set the rollers and then move about 12 to 15 inches toward the tailstock and repeat the process. Once you get the s/r just passed the center point of the shaft you can go to the tailstock and ripped the material off. I usally go .150 deep a side so .300 total and they always come out fine.
Wow even the bearing fits on rock crusher bores I repair are more generous than that for example 400.00- 400.05 mm, at least I get a couple thou to try to hit. And the housings typically are not bent! How many times did you have to flip it end for end?
When the boss saw the run-out, he was like, "I don't care how many times you have to flip that thing, just make it look straight".
that thing must have grown in the jungle
Hi Chris, roughly how many hours from start to finish? 80-90 hours?
How do you drill such large work?
Is there anything special you do to make sure that the shaft end up with little runout?
I guess I mean besides running a good tailstock pressure.
@@FuzzyPanda53 that's a long course you have to take to figure that out. sometimes the stress in the material makes it dam near impossible to get it straight. flipping it lots, keeping the forces low, aka light cuts and minimal tail stock pressure is important. also after roughing letting it "rest" for a day can help some of the stress come out. basically you have to just take it as it goes with long parts you use your years of experience to figure it out and come up with the best outcome, aka get a pro like this guy to do it ;).
@@TheWidgetWorks I couldn't have explained it any better. Thanks 👍
That’s awesome lol
Biggest I’ve done is 245”x10” 17-4 ph.
Do you guys ever press the shafts to straighten them? We had a giant hydraulic ram captured around a very large and long i beam. I’ve bent some damn thick shafts 😂
Good job Chris!
Amazing!
sir i am turning 2.5 meter long shaft when i put studyrest in halfway 1side done after when i removed studyrest run out is 0.5 mm in shaft
The old weeble wobble
💪💪💪
Why do you use an independent 4-jaws chuck and not a self-centering chuck?
He's running the part between two centers. The chuck is just acting as a sort of dog to impart the turning motion.
@@lwilton I understand, but why does he use this chuck when he is not between centers?
It's more versatile, especially when you are working with so much runout.
A 4 jaw chuck is more adjustable and way more versatile than a 3 jaw. With a shaft with this kind of run-out you can throw the job out at the chuck to make the middle run better. I do 4140 shafts like this alot at my job. We have the same machine as him with a 4 jaw chuck. I had to turn a shaft like this that had .500 runout in the middle if I ran it true at the chuck. So instead I threw the runout to the chuck and made the middle run around .300. It makes it alot easier to machine.
All of the above make legitimate points. 4 jaw also has a much better bite.
cant get used to imperial... looks so difficult compared to metric
I was born and raised with metric, and then I moved to the US, had to learn inches. After all these years it does make a difference anymore.
Hey Chris, could you do a video of how to use the manual guide on fanuc control like programming a part from start to finish that would really help me out?
it would have been great if you had given some info on where it will be used.
All I know is that it's for steel mill industry.
@@ChrisMaj Oh ok. Do you know how much did the material cost?
This job looks like a serious pain in the bum. You almost need a vertical lathe tall enough to cut bands for steady rests, but back in the real world where you use what you have...
Yeah, pain in the ass is about right. 👍
great save, that runout was bad.
This is small work and basic, can we see a bigger lathe please
How did you get the hole all the way through??? Impressive stuff
Gun drilling is primarily used to drill deep holes beyond what is possible with conventional machinery and tooling such as twist drills, by using high pressure coolant for clean chip exhaust, even at extreme depths.
@@ChrisMaj thought it may be gun drilling
It scares me watching this, doesn’t bare thinking about what devastation would happen if you lost pressure on the centre. I was wondering how do you get the centre drilled ?thanks for Chris 👌🇬🇧🇪🇺🇺🇦
I never go to work thinking I'm gonna fuck up something today. I'll crash my machine today. The lathe is going to hurt me today. If I did, I'll probably be working in the office somewhere. Don't get me wrong, I have a lot of respect for my machine, and I know she can fuck me up in a split second. That why you never get to cocky around any machine. The centers were done on a horizontal boring mill.
It scares me too . I understand that machine is capable to do that, but there is always some risk. Second thing is price of the stock, and stress not to make any mistake to scrap it . Pozdrawiam i powodzenia :)
@@kacperAGH No stres niekiedy jest a jeszcze jak niekiedy widzę cenę materiału.
What industry is this part for, do you know? Awesome job as always...! Watching raw ugly stock changing into beautiful shiny part is really satysfying.
Steel mill industry.
Machining A steel banana ought to be interesting
How the freck did you guys drill the center hole?
you need a steady rest tool then clamp first to the nearest. then drill it with center drill
ah yes nothing like machining long skinny shafts, the worst kind are 1.5 inch od and 4 feet long lol (apologies for the imperial)
I am working on a shaft right now at my job that is 3.5 o.d and has .250 runout in the middle. It is 124 inches long and is 4140. Looks just like this shaft but smaller. It has been kicking my ass. It took me 4 hours just to get the s/r locations in so I can start the process of ripping the shaft down to 3 inches.
Scrapping that piece would suck balls.
Подскажите резьбу нарезаете каким резьбовые резцом.
Iscar GHGR 31.7-5
@@ChrisMajблагодарю..
Здесь одним люнетом не обойтись.
Qualité 6 en tournage extérieur ! J’ai un doute . Il faut travailler avec les intervalles les plus larges possibles. C’est au concepteur de le savoir . Sinon les prix s’envolent. La qualité coute cher . Si elle est inutile......
It looks like you were trying to turn a banana!!
What's the cost of that job?
That's not my department.
а как резьбу померить, не снимая деталь?
Я использую трехпроводной метод измерения делительного диаметра.
Some air in the waterpump..
Location
US
Would love to watch the gun drill operation.
We don't have the equipment to do that.
@@ChrisMajOk. Thanks for replying.
Ляпота!