Big Engine Lathe 3 ( 8000 LB Stub Shaft )

[1903A3shooter]

Ran a 110" swing at Newport News ship, she was old and big but could really move metal. Also a 72" that we made the shorter prop shafts on. Good work but it ran out and so did I. Dave.

[PooPusher007]

i knock 2 or 3 of these out before smoko

[dereklockhart12]

That's a toy, and whoever is running it is an pussy, even my apprentice's take bigger cuts with more rpm.

[exhebetche]

Gotta love big old machines, note the coffee can to catch the oil leaking from the feed screw shaft seals at 0:22.

[davetileguy]

Is that Lathe from Harbor Freight??

[kowdie12]

dont go under tollerance!!!!!

[xxfm12xx]

You's and your lb's. Use kg's for fuck sake!!!

[jenfui82]

any job for me?

[hearttobefelt]

thats a nice accurate forging , consistant radius judging by the swarf coming off the cutter

pity that poor old live center with a load like that !

[deluxedookie]

8000 gallons of cutting fluid too

[kurtizzyflush]

@ blzbub1 I think they're machining the planet's axis!

[benwara]

so it took you 2 or 3 guys to load that metal by hand? jk seriously though nice finish.

[youngdones]

What is the purpose of a lathe?

[astaschak]

@youngdones to cut round or hexagonal etc metal to get it concentric and to whatever shape you desire, you probably have many things that were turned on a lathe at your house, legs on your chair? wood lathe most likely, metal flashlight? yep lathe, plumb bob maybe? lathe. A lathe makes the world go round :D They're fun too.

[EotechNVD]

@youngdones Pencil sharpener.

[kev8338]

Must be a s.o.b. to align and zero it in. So what happens when the operator makes a mistake and takes off too much? He get fired?

[tomasnog09]

which the material of the shaft and the tool?

[kenndogg51]

take a cut already.

[peteacher52]

Interesting, but a pity the clip is so short. A spoken commentary of what is happening would be of great help to the likes of me who don't fully understand what is going on here.

[jeppoification]

that's some heavy duty shit

[bestamerica]

'

what is shaft use for

[tomasnog09]

O cavaco tá saindo azu (700º C)!

[jayk4406]

Beautiful Machine. I can grind that bed within one tenth of a thousanth of an inch (.0001") over 32 ft, Kellar machine rebuild, We house one of the biggest slydway grinders in north america.

[spsickfastsupra]

pretty good finish for just debarking

[JonseyAlabama]

lets see some hard turning

[1683nhoj]

is this lathe machine existing?

[1683nhoj]

IS THIS LATHE MACHINE EXISTING?

[cncmachine77]

The best video

[dioiao]

how long does it take to machine this part? how many knife insert you spend for this part?

[MrBukinoid]

Них..я почти как ДИП 500,не удивило!

[RubyRhod]

maybe learn to use the metric system? I mean we're in 2010! PLEASE!

[Infeliz08]

Thats one lazy ass job :D

[MrGilburt]

look at craven brothers manchester for big lathes

[MrGilburt]

got a lathe in my cellar bigger than that

[madisonelectronic]

I guess your narrator would be Gin Mill.

[dauphinaisjay]

my 36" bullard will take 3/4" per-side at .028" per rev. no big deal. step it up a notch boys and girls

[jmar1371]

Next time someone brings you a job that needs .005 taken off of it, go ahead and make your 3/4" cut. I'm sure the customer will be impressed.

[dauphinaisjay]

@jmar1371 did you even read the rest of these postes before comment ing on what i said? are you just mad cuz you can't hit a .005" size so your taking cheap shots. people on you tube need to stop taking shots and realize that 95% of the people on here are just joking around sharing info and not trying to be a dick. i'm only 24 years old and i'm telling you to GROW UP

[jmar1371]

What's the matter? Don't like it when people call you on your bullshit?

Well, I'm calling your bullshit. Show me your 36" Bullard taking a 3/4" cut off of a hardened steel shaft at .028" per.

Or STFU.

[dauphinaisjay]

@jmar1371 first off i never said anything about a hardened steel cut and second, like i said grow up

[clavin2007]

@jmar1371 well ive worked in finish and rough cut shops im not impressed with this vid as far as capability... but a cool vid none the less ....there are a million of lathes that can perform this work

[dargonz350]

@dauphinaisjay

Why is it that people need to tell the world how good they are in other peoples videos.

Go and post a video of you're lathe taking 19mm doc at .7mm per rev you tosser.

Getting a job done quickly and whilst rooting inserts, tooling and machines doesn't make you a good machinist, and it just costs more in the long run at the end of the day

[TheGreenle]

Toy Town lathe and machining. I used to do .375" per side at .032" feed with a 15 degree approach tool on 3 ton shafts.

40 YEARS A BRITISH ENGINEER.

[blzbub1]

it's all fun till it jumps out the chuck and knocks the planet off its axis

[arvadawelder]

did you use carbide or hss

[theicebear2009]

@arvadawelder looks like carbide

[MKDunkley]

looks like carbide. Chips are blue too.

[caliusoptimus]

.1" deep? you can do better than that....make that insert squeal like a wounded animal lmao

[muckypup7]

Imagine getting to the final cut and fxxkin it up Doh

[31144]

How do you quote for a job like this dude,Ive always struggled quoting for big lathe work ?

[cumulo25]

1:37 what is debarking? last time i heard that term it was at a sawmill, not a machine shop.

[tannerremillard]

Debarking is roughing the mill scale off of the workpiece

[JayandJenn07]

Some shop lingo is different but with machining the proper term is "roughing out" or "chipping". but for the most part, those numbers are kinda impressive. its not the depth of cut, but the feed rate that blows me away. my CNC will rough .250 per side but feed rate at .015 IPR and thats deep cuts and pushing her hard.

[Hammer07Sickle]

Damn, I wouldn't even think to try 0.250 passes on the manual Graziano lathe I work on. So far the safest depth I've been able to do for roughing is only 0.050

[Bevoin1970]

What ever you do, don't scrap it..!!! as my old Boss would say.

[GeneralG1810]

Rmember you can take metal off but ya cant put it back on, No preasure though. I think we had the same boss lol. Alot of people are intimidated by the big jobs, though to be honest its easier to go wrong on the small ones .001 to deep and start againbig jobs usually means big tolerance I love em

[Bevoin1970]

Not so in these days of Specialist Welders, At the beginning of my career in Toolmaking if you scrapped a job you started again, however as the years passed and trends changed the specialist welder and his very skilful welding became more the norm, made sense, the cost of welding compared to starting again. Having said all that a good bloke didn't drop bollocks, well not often. :-) Think twice cut once, as my old boss would say, Son !!!!

[jeppoification]

@GeneralG1810 but it is good to see the boiler maker absolutely decimated by the fact he needs to weld a job like this up

[baccus61]

@jeppoification Submerged arc machine would weld this up in a few hours while the boilermaker has a cup of tea. The problem is with the heat affected zone from the weld to the 4340 material. It might need to go back for heat treating to normalize every thing.

[fortmcmurraycash]

@baccus61 it would have too, 4340 goes hard as fuck after weld

[baccus61]

@GeneralG1810 I'm the opposite. I find waiting for the LOOONG cut to finish the most boring thing in the world. I like trying to get the accuracy of small fine parts and feel it's a lot more interesting for me. I'm glad you like the big jobs as it saves people like me from necking myself due to boredom :-)

Keep up your good work.

[MrJTHinton]

@GeneralG1810

They have to. Steel expands and contracts too much with temperature change. Not as much reason to worry about a thousandth.

[Axbent]

@GeneralG1810 Sure u can put metal backon, there are metal sprayers and welders!

[GeneralG1810]

@Axbent Yes but its not quite the same, there are some applications where those methods arent an option. But I do understand what your saying Ive dealt with both methods before

[Valtomotive]

hard material not chattering very impressive

[900lt]

debarkin always squeals and breaks tools down faster then usual..being the outter surface is inconsistent in hardness...and no a part that size wouldnt be any harder to indicate then any other part...more then likely it was faced to length and centered on a mill first

[JERRRRRRY1976]

Is it a good idea to take out the oxide before so the cutting tool last longer?

[ericcartman888]

the tool must be eaten very fast !

btw what this big part serves for?

[Zeslayer205]

i wonder how big is the micrometer ?

[11beloiter]

oh they dont use mics for this. digital calipers are the way to go, mics arent as accurate, it takes half the time to use a caliper. iv seen calipers 20ft long.

[domokid]

Are you retarded?

Calipers are nowhere near as accurate as a micrometer is. Go learn a book and come back.

[11beloiter]

Hey kid, calipers are still a reference tool and are not the tool of choice in "high precision" machining. You are obviously a bookworm and lack many years of experience.

[domokid]

You are absolutely right, I do not have years of experiance I am a highschool student taking a metals class. Our teacher came in one day with a chip in his hand the size of a soda can and about 3/4ths of an inch thick. Everyone in the class stunned asks him "What in gods creation made that" He answered that a large engine lathe like that one ^ made it.

Yes calipers are used for referance and comparing, But my point still stands micrometers are far more accurate than a pair of calipers.

[ntimothyt]

manufacturing law..........always only as accurate as necessary and unaccurated as possible....dont worry youll get youre experience over the years.

[JayandJenn07]

Hey come one guy, we were all that shop sweepers at once. If you know what your doing then calipers can be very accurate. BUT experience comes into play with how to hold them correctly.

[dauphinaisjay]

@Zeslayer205 we have micrometers at my shop that you literally need to hang from a crane, no word of a lie. they get BIG nowadays

[bestamerica]

what is use for

[trein45]

This is really large!

If you saw that machine turn, you could have seen that the RPM is low with this size of materials that has to be machined on that bench!

[ovd33]

LOL @ oversized E-Stop. That's actually a pretty impressive idea. If you start getting tangled up in that thing, you want something a buddy can hit with a wrench from across the shop.

[derollelax]

we have such big mashines as cnc. goodway gs500l

[ydna2]

is that giant red basketball thing the E-stop? sweet

[rubberlad71]

gawd thats the most annoying noise on the planet when you have it all shift . we used to machine steel so hard we used ceramic tips . As carbide wouldn't touch it . it used to scream like hell !!!!

[caliusoptimus]

at work weve got a vtl with a 7 foot table :) its older than i am, all manual. we repair babbitted bearings up to 7 foot OD, about the same in length. ive seen bearings with a 24 FOOT ID. think about the lathe that turned the shaft to fit that bearing. now THATS A LATHE ID LIKE TO SEE!

[salemcripple]

I want to see the engine that uses a 7 foot OD babbit bearing! What the hell would it go to?

[caliusoptimus]

large turbine units used by power companies, hydro units like the ones in hoover dam, cement plants use them in their ball mills etc

[salemcripple]

That still "blows my mind". As an ASE tech. The biggest Babbitt bearing that I've ever seen is something like 4in. It just never crossed my mind what kind of bearing would go into the machines that you mentioned. I guess i kind of just figured they would be fluid bearings, or ball bearings.

[SteffanLlwyd]

There's a company next door to me that uses AIR bearings of a few microns... no fluid or roller bearings at all! These go into oild drilling heads.  It is amazing.

[41Zman]

I know of a very old steam engine that takes a 690lb babbitt bearing. i wonder how you pour that much in one shot and get it done in one pass!

[2752226]

Hey edgecrushers, coolant is used quite frequently on manual machines. You just have to know how to control it not to make a mess. I machine both conventionally and CNC. CNC is simple, anyone can do it given the right software. Manual machining takes brains, skill and creativity when you work in the right kind of shop. Nice large work. Wish l had video of a lot of the jobs l have done.

[snake9510]

yeah, right... and sadly it happens that a machine does the work of 5 workers faster and cheaper-and thats when a cnc gets the job... i actually wanted to learn machinist(apprenticeship) but then i had to find out that your just controlling a computer and watching it doing your work... now i'm a welder

[2752226]

There are very few new "Machinists" entering the job force. Most are button pushers. There are a lot of jobs that CNC machines just cannot do as fast or as well as a skilled manual operator. Hey, you are now a machinists best friend!! You can fix most of our screwups!

[SteffanLlwyd]

What you are saying is well documented by shop studies. I think the shift to idiot-tapes was begun as a 'political' move to eliminate skill, and not on efficiency grounds. Many managers like to dumb down the worforce because it gives more control to the office and less control to the shop floor.

[kurtizzyflush]

@SteffanLlwyd Wile E.Coyote  S.G.

[edgecrushers]

*sigh* not meaning to triple post... but i'm going to assume that whoever is machining this is using carbide inserts. you don't generally ever use coolant on manual lathes when using carbide because you need to spray it on the cutter with a jet to be efficient. and of course it'd spray everywhere on a manual lathe. if the coolant flow on the insert isn't even, it can cause thermal stress (ex rapid heating and cooling and heating, etc) and cause premature tool failure... ex, breakage.

[SteffanLlwyd]

I love watching the swarf when the machining is going sweetly, the 'scruching' sound and the smell of cutting oil. Finish looks great here. Different metals smell very different, with aluminum being my favourite -it reminds me a bit of vanilla, in a way. The smell on the skin after handling copper is unpleasant.

Yeh. Does anybody know why exhasting hp steam smells sort of 'ominous' and almost like the smell of 'electric' sparks? You'd think it would have no smell at all.

[edgecrushers]

as crazy as you sound there.... i agree :p

[24765968]

the "smell" of hp steam is likely to be phosphates and amines used to dose boiler feed water to control bfw ph and amaine to protect condensate systems........if my memory serves me well ..

[SteffanLlwyd]

Thanks. It's not a nice smell huh? Not like cutting oil which smells great!

[dfp7777]

That winning is a result of it being hardened to 32 Rockwell.

[tpvalley]

Doesnt whining indicate a blunt tool?

[dfp7777]

perhaps that is a factor also, but if the tool is blunt with soft material chances are it would not whine.

[dfp7777]

Wheres the coolent?

[sweetsuccess221]

have fun indicating that in? haha

[delacerdaa]

Is that a CNC machine too? I`m starting a 5 month CNC course soon I`m making a career change. Any advice for me as far as what to learn more? I`ve heard that being good at writing programs pays well.

[edgecrushers]

no, it's a manual lathe. CNC's are pretty much always closed in. and they're not hard to learn how to use. and programming skill helps, but with time you'll learn how to read and use G-Code rather easily. as far as what you want to learn about, learn more about machining in general, so you can understand why you do certain things and what you need to do in certain situations. good luck though man. (yes, i'm a machinist and do alot of cnc ;) )

[dajizz70]

i agree... cnc is for monkey's... if u wanna really learn how to be a machinist... try ur skill on a manuel .... my machine at work is pre-WW2 and its fantastic... on a 12inch shaft its only out

0.0005 ....

[allistairc123]

thats only a toy lol... check mine out!!

[sspanzerace]

what type of lathe is this mate? im not up on american stuff is it a hendy or something like that?

[barstool100]

The Engine Lathe is a  ERNAULT-SOMUA and it is made in France.

[sspanzerace]

are they any good? we got given 1 at work and its been stood outside ever since! neither me nor boss had heard of em before, didn't think that french shit was up to much

[minnunderground2]

what was that annoying noise? the steady rest?

[caulk04]

That's the metal coming off...

[oldspice124]

Thats cool!

[oldspice124]

i dont get it what does it do?

[Andyman3k]

It makes metal shiny!! Actually, if you are referring to the lathe, it takes an ordinary bar of metal, and cuts it down into specific sizes and shapes, and puts threads on it and many other things. One of the several most important machines of todays industrial world

[snake9510]

i'd actually call it the most important machine... i always look at a lathe as the mother of all machines, there's almost nothing you can't do with a lathe

[TheBestGuitarSoloEVR]

and lathes build parts for most any machine