First Chips On The Giant Cincinnati Milling Machine.

welcome everybody today i'm going to have some serious fun with these big gigantic milling cutters i want to try to create the biggest chips that i've ever created on a milling machine and we're going to be trying out the cincinnati for the first time so hope you join me about a month ago i moved it from my old machine shop to the new one i was contacted by car machining in canada said he's retiring and he wants to sell all his machines and this one on the list just happened to appeal to me so this machine took the 400 mile journey from canada to spokane and arrived safely until this moment right now where we get to turn it on this machine probably cost around 25 to 30 thousand dollars back in 1957 when this machine was manufactured and our money now that's well over a quarter million dollars so this is a cincinnati number five milling machine because it has a 50 inch cutting envelope on an eight foot long table this thing is a beast and this is the whole reason why i got it is for that extra travel in the x-axis this thing needs 100 amps of 483 face power now to put that into perspective the electron hoses are about the same size as what powers a large house that's a serious hose look how nice this cabinet is these are all the original equipment i mean i'm six foot tall and this cabinet is huge and then the power comes down on the floor and goes into the machine so where are all these electrons flowing to that is a serious door i mean look how thick a cast iron that's 3 8 thick cast iron door i bet you this door weighs 200 pounds just by itself so originally this had 25 horsepower electric motor this has been upgraded to 50 horsepower so this thing has some serious grunt if you think 50 horsepower is a lot shoot this thing has a 5 horsepower motor just to drive the knee up and down this has more horsepower than a bridge port does just to drive the spindle this machine's quite comical in size it's not until you really get up close to it do you really realize how ridiculous this piece of equipment is especially if you've ever been around a bridgeport machine i can't even reach the tippy top of this thing so let's power it on and then i'll walk you through all the knobs and switches from an operator's perspective and show you what everything does i think it's pretty fun to see 50 horsepower here we go [Applause] sounds really good so the first thing i want to do before we operate is go look at the sight glass to see if there's oil coming out of it so this is one side glass and i can see oil dribbling out of the back so i know it's getting fluid up here and then there's another one at the top i can see bubbles so there's just circulation of oil into this head and i know that the pump is working it's not much different than operating a bridge port machine there are some cool features like the speeds and feeds that we can adjust and let's just look at it from an operator's perspective so i want this table to go left and right and i know i can do that by pushing this lever there's a nice good satisfactory detent clunk but the machine isn't moving if it's anything like the kearney trucker the spindle needs to be on and this lever turns the spindle rotation on and now the drive is working and when i did that you can see the lever in the back so this lever and that front lever are hooked together so now if i want the table to go left or right i just have to push this so you can see the table is moving now if i want to move the table to go back towards the machine it's this one so this is the rapids which means i can move the table fast wow and that's so smooth this handle is just effortless let's change the speeds and the feeds now this is where i think that this machine is a mechanical marvel for its era and when it was manufactured so right down here this is a sight glass and it has how fast the table is moving in inches per minute and i can change that by coming over here to this stick shift and selecting feeds so when i push over i can go faster or slower just like a car and you hear those clicking noises so right now i'm changing the speed slower this thing goes up to 90 inches per minute that's moving we can do the same thing with the speed of the spindle which means we can change how fast that this thing is turning from this knob right here what i'm looking for is the dial in the back when i push over on the lever i can see the dial turn and then i give it a second and i can hear the gears chain and then when it stops i'm ready to go so the last axes that need to be moved is the knee which means the whole table can go up and that's with this guy right here that's cool down now this machine has one more trick up its sleeve this head can go up and down and it's all done right here with this lever so if i want to go down you can see it's turning or i can operate this manually or have the machine do it by itself maybe i want to have a set of stop i can rotate this around and then when this head comes down and pushes on this plunger it'll stop it automatically this is extremely useful for drilling holes or boring and you can see the starting to push it off there it goes automatic stop the last couple levers are these ones on the back of the machine these levers are connected by a linkage to the ones in the front of the machine and then of course this one i can change the rotation of the spindle i believe you have to have the machine turned off to select this and then that's all you got to do and it locks into place and now we're going left some of the things i'm noticing that might be a limiting factor on a machine like this is how little clearance it has from the top of the snout to the table and we look like we're about 20 inches which is actually for a machine this size that seems kind of small to me the other things that are kind of concerning is from the back here to the center line of the cutter is also only 20 inches this head doesn't twist pivot or tilt like a bridge port does the distance between the cutter and the draw bar is insane i cannot reach both of them at the same time even if i bring the head down as far as it'll go i still can't reach it so i'm gonna have to get a step ladder this table is just so ridiculously long that if i want to bring the table in real close to the cutter i'm so far away from it that i can't see and operate this handle at the same time this is going to take some getting used to that's for sure which i'm hoping is good at is really hogging some serious metal off and i want to see how big of a chip that this thing can really take i want to push it to its limits so that i know what it's capable of when i have a job for it so this machine takes a 50 taper and this is a made in japan eight inch diameter face mill with some positive geometry cutters and i've used this on the knt before so i know this thing is a wonderful tool it really makes a surface finish and cuts really easily so let's plop this into this machine and see if we can take a full depth of cut this is my first tool change holy crap i grabbed the wrong size wrench everything is deceivingly huge on this thing this thing has a counter balance on the inside so this is hollow frame and there's a big weight that's helping this thing raise and lower this is a long shaft that runs through the top to the bottom that's pulling that taper up who would have thought you have to stand on top of the table to change the tool holy crap that's the draw bar that's what sucks the tool up and pulls that taper now we're looking like a real milling machine it's funny that eight-inch cutter looks like a baby in there let's get a curt mounted up there that'll do let's get a forklift so i'm ready to make some big cuts and i think we should load up this eight by nine by six inch tall piece of steel in the vise this is an eight inch diameter cutter so we can take an eight inch wide swath out of here and that's exactly what this block is and this uses carbide inserts to do the cutting so what makes this insert positive is how it's tilted back so it has a scooping effect instead of a dragging effect so that edge is really sharp this is one of my favorite cutters this is designed to have a 200 thousandths depth of cut so that's the maximum depth we can actually cut with this this puts the rpms on this machine around 279 and i'm going to be pushing it at 13 inches per minute full depth of cut so to make that full pass across there is gonna take less than a minute and to put that into perspective i did cut this big block on the band saw and it took approximately 15 minutes to make a cut all the way through this whole face this thing's really going to move some material [Applause] really hogging would you look at that the load meter isn't even registering man this motor is just idling through this [Music] [Applause] [Music] well that was awesome look at those streakers holy smokes [Applause] [Music] [Music] [Music] [Applause] so that was fun well let's take a look at the surface finish it looks like i didn't quite get squared up on the cutter pass but that's okay this is just for fun anyway the surface finish on that roughing cut man it doesn't look too bad i mean you can't feel those this milling machine is very impressive take a look at those those are probably the biggest chips i've ever seen come off of milling machine before man they're really pretty look at the color of the chip i want to see what this baby can do when i put a gigantic end mill into this thing and see how much depth of cut and how wide we can get that so let's pop this face mill out and throw in a giant end mill oh yeah look at that six inches brand new made in sweden this one has the milling machine's name written all over it i've never had a machine that's capable of seeing a two inch end mill cut to its maximum we have the depth of cut which means how much of the end mill we're actually using as far as the width and then the depth of cut which the length that's the only way to go faster we can't turn any faster on the rpms and we can't move much faster on table speed but we can go faster just by removing more material and using the full capability of the end mill and this is where horsepower comes into play i want to run coolant when we do the end mill test and i turned it on for the first time and look at it it's pretty gross but so i'm gonna do a little coolant flush some coolant right now is better than nothing i'm at 219 rpms and one and five eighths inches per minute and we're gonna take the full five inches depth of cut and we're taking half the cutting diameter on the end mill which is one inch so that's a pretty healthy cut so well that was really fun playing with the big end mill i think this thing has a lot more performance left in it once we get the coolant changed out i could push it a little bit harder but man taking a five inch depth of cut one inch wide pass that is the biggest pass i've ever made in my entire life but i'm glad you guys were able to take this walk around with me hope you guys enjoyed it and i will see you guys on the next one you

Channel: Fireball Tool

Views: 828,808

Rating: 4.9433002 out of 5

Keywords: fireball, tool, Fireball tool, Welding, Big end mill, End mill, Big chips, Cincinnati mill, Vertical milling machine, Machinist, Face mill, Restoration tool, Tool restoration, Big mill, Milling machine, Metal cutting, Giant end mill, Fireball, Tool, Big tool, Carbide cutter, Heavy cut, How milling machine works, Slow motion, Marvel band saw, No. 5 milling machine, Biggest end mill, Biggest face mill

Id: oTCal8LjYTk

Length: 14min 32sec (872 seconds)

Published: Sun Jun 06 2021

Reddit Comments

[u/supfren]

Heckin' chonker

[u/SirCrest_YT]

What an incredible specimen of a machine.

I'd love to see what the peak current was on that machine during some of those cuts. In the comments he mentioned even the final cut barely registered on the load meter.

[u/0mica0]

I always wonder how it looks like when you fuck-up something on a machine of this size.

[u/averagelemur]

That is an absolutely stunning machine. I want to take a nap on it.

[u/Radio_Ortiva]

god is real

[u/scouch4703]

Chooched through that shit hella quick

[u/xARCADIAx]

I bet that could cut through so many vices.

[u/haagar]

When he climbed on the table for the tool change 😂

[u/davey-jones0291]

The footprint of that is literally the same as my shed. That's a damn cool machine though, proper grown man toy.