Gotta love the "tooling marks caused this part to fail" part. Heavy use had nothing to do with the failure, it was the tooling marks. LOL 🤣

@ChrisMaj

2 ай бұрын

The steel mill environment is really rough on the equipment. The things that are coming in for repairs, sometimes I'm like, how the hell did you manage to break that.

@Droolbaby

2 ай бұрын

To be fair, there are some applications that require very tight tolerances in the application and use and a tool mark could push those tolerances out of wack...however, those have to be VERY tight tolerances and usually seen in very specific applications and industries (Formula One engines is one example).

@larkalfen9510

16 күн бұрын

usually tool marks are eliminated after grinding and polishing so i fail to understand why he doesn't leave an allowance for grinding . or they just dont have grinder for it

Those FIX8 inserts are absolute studs. Stellar work as usual.

I’ll bet you the guy that drew that part up originally never imagined that a computer controlled machine would be cutting those radii so smoothly. Nice work.

@ChrisMaj

2 ай бұрын

The print is from 1965, I wasn't even around then😅

@matiastripaldi406

2 ай бұрын

How would you cut it otherwise? By step turning and then filing? You cant use a form tool on a part this bid

@matts2436

2 ай бұрын

perhaps a hydraulic tracer@@matiastripaldi406

@prestongood8394

2 ай бұрын

@@matiastripaldi406 Ball/ radius tool post

@fredrikcarlen3212

Ай бұрын

@@matiastripaldi406 There's always a way, but it'd involve some pretty unusual tooling. Probably a fourth axis, rotating vertically on the carriage, provided the required radius is perfectly circular. Imagine something like a "ball turner" tool for a manual lathe, but used in the opposite way. If it's an oval, or some other more complicated shape, you'd need a fifth axis mechanically linked to the fourth with some fancy variable linkage that would have to be adjusted for the shape. Thank god for CNC, i guess!

When I saw that first cutter, I knew big chips would be flying. I looked at the screen and saw that the lathe was only at 83% with that depth of cut. Truly boggles my mind how an insert so small can do that lind of work.

@ChrisMaj

2 ай бұрын

1045 cuts really nice.

@PundhyLuzino

2 ай бұрын

Ini benar2 pekerjaan mesin bubut yang menakjubkan, ❤

Awesome video! I love how strong those lathes are. Turning a 2 ton piece perfectly on center.

Thank you Chris for this great machining video. I love carving with the Kennametal knife tool in slow motion, it makes nice big blue shavings. Have a good working week and see you soon.

That mill scale and rust is no match for a good carbide insert. Nice work as always!

I could watch this all day. I miss turning & milling. So satisfying.

Poor man roughness test method😂😂 same to you❤

Half a thousandth tool mark will cause an 8" shaft to sheer ... sure thing bud! I read those notes as a cheap guys way of trying not to pay full price when you are done the job. "Doesn't meet the specs I gave you." Beautiful work as always! Thanks for sharing 🇨🇦

@SubramaniamLakshminarayanan

5 күн бұрын

One surefire way to bring these people to their senses is to add extra for grinding/honing/lapping the part to remove tool marks. 99% of the time you'll hear - fine, just keep it to the minimum possible. That; 's their way of acknowledging their stupidity. BTW, this part is just a pusher, not some ultra-critical clearance application. A couple of toolmarks will in no way interfere with its function.

I cannot get over the enormous micrometer (which is crazy to say)!

I always enjoy watching the turning of big radii. You will want a big Cratex stick to polish those curves.

@ChrisMaj

2 ай бұрын

Honestly, I've never used one of them. I'm just a sandpaper guy.

@localele1

2 ай бұрын

@@ChrisMaj They do a great job on small parts but I don't know if it would make much impression on all the steel you have there.

That part is very solid not slender enough for tool marks to cause failure.Another nice turning job Chris.I do miss machining large jobs.

@ChrisMaj

2 ай бұрын

Yeah, I was just messing with that tool marks cause years ago we had that one inspector, and he was really picky about surface finish/ tool marks. He would use his fingernail and be like " that's not gonna cut it, polish it more "

With that -0.001 tolerance and tool mark callout, the machine shop must've loved this particular engineer very much...

Came out well 👌 thanks for sharing 👍

That is ART!

You're probably the best youtube machinist out there

@ChrisMaj

2 ай бұрын

Not even close, but I'll take it

Those are some crazy tight diameter tolerances for a shaft of that size!

That's some impressive cuts! Damn

@ChrisMaj

2 ай бұрын

The tool could take bigger cuts, but my lathe is like, hell no.

Slick work as usual.

@ChrisMaj

2 ай бұрын

Much appreciated

Love watching your videos, I learn a lot 👍🏿👍🏿👍🏿

@ChrisMaj

2 ай бұрын

Awesome, thank you!

Man i wanna make big parts like this...I run a Hardinge mostly, small titanium parts that are like 3-5 inches long lol. Thinking of going to another shop next year potentially. I wanna learn to run cncs cause all I do is manual work like honing, flat lapping, finish grinding, match lapping, roll lapping and Hardinge for finish lathe work that requires +/- .0002 work. Watching you turn this was so cool idk lol, though my heart stopped for sec when you showed the print...parts I work on have that ITAR stamp soooo I'd probably get fired if I showed it lol.

That was impressive well done

Beautiful work as always. I always learn something new from your videos. Thanks very much. Have a good weekend.

@ChrisMaj

2 ай бұрын

Thanks. I wish I had the time to actually explain things while I'm working cause these are the channels that do good on youtube, but it is what it is.

@BruceBoschek

2 ай бұрын

@@ChrisMaj We learn from you by example and where necessary by reading between the lines. We appreciate your videos very much!

Mesin bubut yang menakjubkan 👍👍👍👍👍

Great skills and Great machine 👍👍👍

Nice work as always!!! 🇧🇷🇧🇷🇧🇷👏👏👏

Myself being in quality control I always think about one mistake can be very costly especially when tolerances are so tight

Está muy bien qué muevas el reloj comparador para que veamos que no está fijo!!😂😂

good job👍

The Big job . Your Good machinest crist

How many cutting edges of the Insert did you need to use to remove 800kg?

@ChrisMaj

2 ай бұрын

Same edge for both ends, and I probably could have done another one. It's a 1045 ,it cuts really good.

Lathe work is very satisfying, to do or watch. Metal or wood.

Very very good brother form akbar sheikh Pakistan

Super great videos👍 been watching for years now, thank you😁 hows center getting put in to these huge rounds for the tails stocks live center?

@ChrisMaj

2 ай бұрын

Horizontal boring mill.

@bullfrogmachine

2 ай бұрын

@@ChrisMaj maybe some footage of that one day???👍

@zyndapp800

2 ай бұрын

That would be cool to watch😎

The piano man does it again- magnificent job .

Fantastische Arbeit 😊

Great work as usual Chris, is there any chance you could add the time to produce the component floor to floor including programming? Thanks in advance.

@ChrisMaj

2 ай бұрын

I could, but the thing is that sometimes I'll start one thing and another hot job comes in so that one just sits on the floor.

Nice 👍

Nice...

Very impressive work. About how long of just cutting for that beast of a part?

FANUC ❣️ The only language for the pros

Gday Chris, plenty of material removal there mate, beautiful job, cheers

Don't blame the machinist, When the engineer, Runs for cover.

Я был мастером механики после технаря У меня дед в бригаде был токарь за пенсию Никогда не люлил чистовую Ставил режимы так что бы стружка аж до светильника доставала летела Диверсант Соседи по цеху работать не могли

How large is the concentricity and straightness deviation after roughing? before the pre-finishing?

.032 feed is awesome

Сколько времени ушло на обработку?

Всегда прохожу болванку первым черновым проходом, убирает биения и ржавчина потом не летит при последуещей обработки. И на обдирке по возможности использую левые резцы и обратные обороты, что бы семечки летели вниз.

always chase your mark

Вы умеете экономить металл :-))

How long did this part and setup take?

How long does a job like this take you, from start to finish (planning, setup, programming, running, etc)?

If I did the math right, I think that initial cut was removing over 4kg of metal per minute. That's wild.

@ChrisMaj

2 ай бұрын

I wish I got a bonus for every kg of chips.

What depth of cut were you running on that fix8? I see 300 sf and .032in/rev but couldn’t tell from the code how deep you had the insert in the material. That thing looks like a monster cut

@ChrisMaj

2 ай бұрын

1:27

How do you touch off the tools and setup the controller for the different tools?

@elanjacobs1

2 ай бұрын

Fanuc manual guide i has a teach function for tools; you just take a cut and tell it what it measures

@ChrisMaj

2 ай бұрын

Take a test cut, measure it, and enter that number into your offset, and I would do the same thing with other tools.

@larryblount3358

2 ай бұрын

Thanks. I assume you set the z axis the same way? Facing (partial) and set z0.

@elanjacobs1

2 ай бұрын

@@larryblount3358 yep, or z=whatever if then end of the part isn't convenient

8:48 We talkin hide the angry beaver marks... or Hubble surface finish?

@ChrisMaj

2 ай бұрын

He's serious here "MUST BE ELIMINATED "

@ShainAndrews

2 ай бұрын

@@ChrisMaj Rolling over here!

1:30 😱 F0.8 ???? Its a thread ❣️ LoL my max on a takisawa la250 was F0.3 😅😂

Thanks for the video, what's the P100 ? is that a dwell?

@ChrisMaj

2 ай бұрын

I'll have to look into it cause I never do anything with that.

Damn that's nice work. What kind of steel is that? Seems like it's on tue harder side.

@ChrisMaj

2 ай бұрын

0:02

Do you have to probe in after each tool change?

@ChrisMaj

2 ай бұрын

As long as I'm not taking them out of the toolpost, then no, but that's only 4 tools.

I always wonder watching your videos how do you probe you tools? maybe in one of the next videos you could show a bit of how you do it ?

@ChrisMaj

2 ай бұрын

It's pretty simple. I'll take a test cut, measure it, and enter it into the offset.

I wonder what is the price of machining that part??

👍👍

When/how did you face off the ends?

@ChrisMaj

2 ай бұрын

Horizontal boring mill.

wow

Part broke probably because the blank was not forged but machined from cylinder ... like this one.

@ChrisMaj

2 ай бұрын

Yeah, that might have had something to do with it, but you would not believe the things that they break at the steel mill.

I have the same machine and have a job coming up in the next couple days. It is 9.625 soild 316l bar stock I have to turn to 9.000 +0.000/-0.008. It is 208.250 inches long. I also have that same tool. What kind of feeds and speeds would you start running that at?

@ChrisMaj

2 ай бұрын

If by 316 you mean ss than you're asking the wrong guy. I don't do much stainless steel.

@wendull811

2 ай бұрын

@ChrisMaj That is what I meant. Well, I'll check what the box says and go from there. Thanks.

Another failure point is grease fittings

...Конечно....такие станки.....А ты попробуй этот вал выточить на ДИП-500......

Скажите пожалуйста,а почему вы так резец установили ?

@ChrisMaj

2 ай бұрын

Что значит "вот так"

@arturreznikov3268

2 ай бұрын

​@@ChrisMajперевёрнута режущая часть ,где пластина на резце номер 1

@ChrisMaj

2 ай бұрын

Посмотрите это видеоkzread.info/dash/bejne/a6dkzdWDZb3QZM4.htmlsi=KkFinH4N4q72vk8X​@arturreznikov3268

@arturreznikov3268

2 ай бұрын

@@ChrisMaj спасибо ,это видео все объясняет .Видимо я его не смотрел ,так как недавно на вашем канале.Очень интересный у Вас канал ,смотрю с удовольствием .Если честно ,я таких резцов ни разу ещё не видел ! Удачи Вам в развитии канала ! 🤝👍

Pretty hard to avoid tool marks on a THICC chunk of steel like this...

Might have been bad quality steel that made the part snap, but toolmarks? NO!

вы видите как делают в китае гвозди)))

А что же вы не всю последовательность операций показываете ?

@ChrisMaj

2 ай бұрын

Это будет двухчасовое видео.

I assume your finger nail is calibrated at a hardness lab after every trim. When I worked at a gas turbine overhaul company tool mark (or any surface marks for that matter) removal was extremely important. In aircraft engines the parts are highly stressed so they can be as light as possible and are therefore susceptable to crack formation at stress concentration points. Much time was spent with Cratex sticks smoothing out radii etc. Even grinding surfaces was problematic as certain materials are subject to grinding burns which can lead to crack initiation. These grinding burns are invisible to the naked eye and only show up when etched with nitric acid. The surface will look perfectly smooth but be burned and unacceptable for use. The parts you are making, while likely subjected to huge loads, are very heavily made and probably develop relatively low stresses in the material. While tool mark removal is good practice, it likely would make little difference on this part. Ken

@patrickgloss2096

2 ай бұрын

I believe that's rough turn rolls typically are finished ground to size.

Hi, again I am wondering, is the center in de main spindle (slightly) floating and only used as an axial stop? Because it would be over constrained with a fixed center, you could be doing huge damage clamping the jaws unevenly. Great removal rate BTW. At work I was discussing milling vs. turning for hogging out big parts, because the Mazak VTC does not lend itself well to high removal rates, one of our big lathes will do it much quicker. Also it appears the chip thinning milling strategies do not work equally well on different machines.

@ChrisMaj

2 ай бұрын

It's kinda like working between centers. You install the piece between centers, you put an indicator on it and then you tighten the jaws .

@bigbattenberg

2 ай бұрын

@@ChrisMaj Thanks! Do you mark the deviations on rough material and make sure the numbers don't change while tightening the jaws? Normally a drive dog would be used between centers but for large work this is probably not an option.

✋🏼🇦🇺👍🏼

Who shovels out the 800kg of shavings?

@ChrisMaj

2 ай бұрын

The chip conveyor.

Machine RPM

PRO!!!

Kutos!

where is it cnc?? heavy work, but, why tis rubbish tool holder...

@ChrisMaj

2 ай бұрын

What are you talking about?

That poor, poor live center

@ChrisMaj

Ай бұрын

That poor live center can easily handle 11000 lbs. That was nothing.

@masheroomboi2884

Ай бұрын

​@@ChrisMaj🤓

So ein Unfug. Nach dem ersten Schruppvorgang mit der Bügelmessschraube zu messen. Da geht ein versierter Dreher mit dem Meßschieber dran.

"Let's be realistic, This thing did not break because of tool marks." "But all tool marks must be smoothed" obviously the new engineer covers all his bases. It looks pretty too! Shuffle blame from design to manufacturing. From manufacturing to maintenance, from maintenance back to design. Welcome to Boeing. Why did it FAIL. The design did not account for reasonable maintenance and manufacturing flaw allowances. "The reasonable test" And what is a reasonable engineer to do, cover those bases in design. DESIGN FAIL, PERIOD, or maybe a rough finish as well. Or lack of maintenance. Needed more grease as well. Probably needed the newer flux capacitors installed as well.

This is a wast of material and plz y do edit the part wer u lift it we want to learn how to safely switch it

@ChrisMaj

2 ай бұрын

How is it a waste of material? Yeah, we could have used a forging, but it takes a long time to get them,and in repair, machine shop time is what we don't have cause everything is a HOT JOB

А почему без охлаждения?

When exactly do you decide to use coolant or not? There doesn't appear to be any difference between the times you are and when you aren't.

@ChrisMaj

2 ай бұрын

If I don't use it, it's mostly for video purposes.