This is a great animation of the overview of how train wheels are manufactured. Although I feel it is necessary to point out that not all aspects of the wheel are machined such as the contours, usually only the outer edge where the flange and the tapered point contacts the rails is usually machined to spec as well as the ID that is press fit onto the axle. Its also worthy to point out that wheels on both locomotives and freight cars are turned fairly often as when the wheel is in tolerance and has a perfect tapered angle there is a significant less amount of friction between the rail and the wheel.
In modern locomotives or trains it is, because its cheaper and quicker to machine the wheels still on the locomotive. Freight cars, older locomotives, and some railroads will pull the wheels out from under the locomotives in-order to remachine the surfaces. This also gives time to inspect other parts of the wheel and motor assemblies that are inside the truck body that encases the wheels.
Here in The Netherlands it’s standard procedure they say. There is no time to take the wheels off all the carriages. Which comes with safety hazards as well. Doing it on the train is kind of like a drive-through action.
I was a Guard in the 1970's, & it was a very mature technology then. The process of taking the wheels off a steam-loco is a lot more complex than modern rolling-stock, requiring the careful handling of large pieces of high-precision steel & heavy-lift gantry-cranes, & during the early steam-era the idea of a lathe built-in to the maintenance road was quickly developed, mostly to reduce maintenance time.
Обычное дело проточить колесную пару. При экстренном торможении колеса слизываютмя и не слабо так стучат - их перетачивают. Плюс выравнивают радиусы колес в паре, чтобы они не поворачивали ;)
I have always found it interesting how small a train wheel flange is compared to how huge those trains are. All it takes is one inch of lift of the wheel for whatever reason to cause a major disaster. I'm beginning to think that flange climb is one of the main causes of derailments especially like I said before the flange being so short.
It's more than just the flange holding the wheel on the rail. There is a taper on each "tire," narrower at the outer end and wider toward the flange. So it's progressively harder for a wheel to "climb" as it gets closer to the flange. This also allows for the difference in rotational speed between the inner and outer wheel on a curve. There are many tons of down-force on each wheel, so it's very hard for a wheel to overcome the taper and the flange.
a train would never lift an inch. Reason being is because they weigh soo much. a locomotive weighs at least a few tons and all of that weight is concetrated onto skinny peices of metal . Only way a train would derail is if the tracks or wheels are badly maintained or if the train doesn't follow the correct speed limits.
But i think one should not forget that all that mass in movement can also help getting out of the tracks, if it slams into a corner, or onto a defect in the rail.
Nope. Most any spec of cast-iron would be too brittle. These pieces are made of electric-furnace alloy steel, which is cast as long cylinders, then sawn into the blanks shown. Then the fun begins, heating, forming, machining.
I've seen imperfections like rust out spots and flat spotting on rail cars. The wheel goes down the rails banging or grinding . Holes are uncommon, but I've seen some of those too. Steel can be an imperfect metal to forge.
Hello Levente. Thanks for reaching out to us. Based on our experience of working with this area, the wheels are not re-balanced after re-turning. Hope this helps.
krap101 Hi, During production of a railway wheel you will meet some challenges at the turning process. This could be the different hardness on the wheel, tolerances, productivity, tool life and tool security. All these challenges you will overcome with the latest assortment of tools for Railway Wheel Turning from Sandvik Coromant. Best Regards, Per Kolvereid Application Specialist, Positive Turning
Sandvik Coromant Hi, i know... it was a joke about narrator pronunciation. By the way, Sandvik is an amazing company with the most advanced technologies and products for us industrial guys. I work in mining and we really depend on, use and abbuse Sandvik products. Cheers!
interesting points ,if anyone else wants to learn about how to build a model railroad layout try Pycanta Model Railroaders Protocol (do a google search ) ? Ive heard some extraordinary things about it and my neighbor got great results with it.
I'm sure/hope the wheels were secured to the axle a little better than they appeared to be at 01:47 - 01:53 ..and seemingly secured by x3 bolts!!! Should have shown the real/whole process. Good for youngsters I suppose.
Fenix There's very little axial load in that direction. See how the flanges on the wheels are inside the rails? they transfer axial loads and they always transfer it towards the center.
The wheels are heated and press fitted to the axle, once it cools it is able to contract and firmly grip the axle. The 3 bolts you see in this animation are there to hold the bearing cap in place for the roller bearing that sets on the outside of the axle. A set of trucks or bogies (if you are Europe) is set on top of the wheels and they set snugly down onto the bearings.
In the US, too. The trucks are lifted to remove and replace individual wheel sets which are attached and held in place only by the weight of the car/wagon.
I would have never thought to re-turn the wheels while they were still attached. Genius!
I think the animations were very well done
This is a great animation of the overview of how train wheels are manufactured. Although I feel it is necessary to point out that not all aspects of the wheel are machined such as the contours, usually only the outer edge where the flange and the tapered point contacts the rails is usually machined to spec as well as the ID that is press fit onto the axle. Its also worthy to point out that wheels on both locomotives and freight cars are turned fairly often as when the wheel is in tolerance and has a perfect tapered angle there is a significant less amount of friction between the rail and the wheel.
real life footage would've been great!
czcams.com/video/Lhm_k9CbQVU/video.html
Short, precise and very informational.
Seems there was a typo in your copy, the wheels are not mounted on an axes but rather axle.
A very well done animation.. loved it .. thanks the designer ..
this video is brilliant. thanks.
merci sandvik
Great video
FASCINATING!!!
Thanks, good to know.
Speaking of high demands, what kind of graphics processor and CAM software do i need to generate these simulations?
It must be expensive to get the endless white void to put the factory in
Is it common practice to re-machine the wheel surface while still on the train or is this a new technology?
In modern locomotives or trains it is, because its cheaper and quicker to machine the wheels still on the locomotive. Freight cars, older locomotives, and some railroads will pull the wheels out from under the locomotives in-order to remachine the surfaces. This also gives time to inspect other parts of the wheel and motor assemblies that are inside the truck body that encases the wheels.
Here in The Netherlands it’s standard procedure they say. There is no time to take the wheels off all the carriages. Which comes with safety hazards as well. Doing it on the train is kind of like a drive-through action.
I was a Guard in the 1970's, & it was a very mature technology then.
The process of taking the wheels off a steam-loco is a lot more complex than modern rolling-stock, requiring the careful handling of large pieces of high-precision steel & heavy-lift gantry-cranes, & during the early steam-era the idea of a lathe built-in to the maintenance road was quickly developed, mostly to reduce maintenance time.
Обычное дело проточить колесную пару. При экстренном торможении колеса слизываютмя и не слабо так стучат - их перетачивают. Плюс выравнивают радиусы колес в паре, чтобы они не поворачивали ;)
Why 3D anim, why not the real pictures ?????
I have always found it interesting how small a train wheel flange is compared to how huge those trains are. All it takes is one inch of lift of the wheel for whatever reason to cause a major disaster. I'm beginning to think that flange climb is one of the main causes of derailments especially like I said before the flange being so short.
It's more than just the flange holding the wheel on the rail.
There is a taper on each "tire," narrower at the outer end and wider toward the flange. So it's progressively harder for a wheel to "climb" as it gets closer to the flange. This also allows for the difference in rotational speed between the inner and outer wheel on a curve.
There are many tons of down-force on each wheel, so it's very hard for a wheel to overcome the taper and the flange.
a train would never lift an inch. Reason being is because they weigh soo much. a locomotive weighs at least a few tons and all of that weight is concetrated onto skinny peices of metal . Only way a train would derail is if the tracks or wheels are badly maintained or if the train doesn't follow the correct speed limits.
James surrey A few tonnes? Lol, make that 80+ / 100+ tonnes :) Metric ones that is.. Use Google to convert it to alternative measurement systems.
But i think one should not forget that all that mass in movement can also help getting out of the tracks, if it slams into a corner, or onto a defect in the rail.
You are forgetting the travel of the suspension - - if the axles were rigid to the frame a 2 inch flange would not be sufficient.
Nice clean rim
which software you have used to make this video ?
*amazing*
Very interesting. You don't have anything about the type of steel used. That would be good to know too.
Nope. Most any spec of cast-iron would be too brittle. These pieces are made of electric-furnace alloy steel, which is cast as long cylinders, then sawn into the blanks shown. Then the fun begins, heating, forming, machining.
good
I've seen imperfections like rust out spots and flat spotting on rail cars. The wheel goes down the rails banging or grinding . Holes are uncommon, but I've seen some of those too. Steel can be an imperfect metal to forge.
the bending process is called press-forging
Roll bahn....so much better a word than...train.
nice animation
Mounted on the... axis?
Bending machine MUST be made from really tough steel! Why don't use it for rail wheels?
No Michelins?
I HAVE TURNED THE WHEELS BORED THEM OUT TO FIT ON THE AXLES
Now Forged Wheel will manufactured in India 🇮🇳
Also it will export to Europe.
9gag sent me here.
This one is clearly CGI, the 9gag one is realler
The wheels are pressed on the 'axle', not the axis. The bearing is pressed on also, not held on by three bolts.
Luar biasa lokomotik canggih🚈🚃🆗️
It dosent need any balancing after machining it?
Hello Levente. Thanks for reaching out to us. Based on our experience of working with this area, the wheels are not re-balanced after re-turning. Hope this helps.
so it's like pencil then, if it become "dull", you just "sharpen" it. Easy, long lasting, efficient!
Can only do it so many times though...
오 신기해요
SWEEEEEEEEEEET !!!
Axis? I think you mean Axle.
Yes
That's right, don't show is the real footage, just CGI the crap out of it instead and use a robot for the voice over. So convincing!
Why am I watching this? I don't even own a train 😅
CG is boring. Video of real wheel production would be better.
Same here
Why is this difficult? Because it's hard?
krap101
Hi,
During production of a railway wheel you will meet some challenges at the turning process. This could be the different hardness on the wheel, tolerances, productivity, tool life and tool security. All these challenges you will overcome with the latest assortment of tools for Railway Wheel Turning from Sandvik Coromant.
Best Regards,
Per Kolvereid
Application Specialist, Positive Turning
Yes, most hard things are also difficult. They can be challenging as well.
I thought they made train wheels not cartoons!
before compression forged ......... really..... that is what forging is
and you wonder why I drink....
"ship evacuation"?
Hi,
It's "chip evacuation". The removal of the metal chips generated in the turn machining.
Sandvik Coromant Hi, i know... it was a joke about narrator pronunciation. By the way, Sandvik is an amazing company with the most advanced technologies and products for us industrial guys. I work in mining and we really depend on, use and abbuse Sandvik products. Cheers!
interesting points ,if anyone else wants to learn about how to build a model railroad layout try Pycanta Model Railroaders Protocol (do a google search ) ? Ive heard some extraordinary things about it and my neighbor got great results with it.
@10
Inte mycket kvar av det svenska. Bara engelska för hela slanten.
I'm sure/hope the wheels were secured to the axle a little better than they appeared to be at 01:47 - 01:53 ..and seemingly secured by x3 bolts!!!
Should have shown the real/whole process. Good for youngsters I suppose.
Fenix those 3 bolts are 1 1/2 inch thick each. 3 Galvanized steel bolts will hold 1 wheel
Fenix There's very little axial load in that direction. See how the flanges on the wheels are inside the rails? they transfer axial loads and they always transfer it towards the center.
The wheels are heated and press fitted to the axle, once it cools it is able to contract and firmly grip the axle. The 3 bolts you see in this animation are there to hold the bearing cap in place for the roller bearing that sets on the outside of the axle. A set of trucks or bogies (if you are Europe) is set on top of the wheels and they set snugly down onto the bearings.
Hi Fenix,
The 3 bolts only hold on the bearing cap, not the wheel itself.
In the US, too. The trucks are lifted to remove and replace individual wheel sets which are attached and held in place only by the weight of the car/wagon.
Animation?! Habt ihr keinen richtigen Film? Könnt ihr es in der Realität noch nicht?
Not how u really make it untrue
Choo choo
ghgj
Mounted on the "axis"? And the crap digital voiceover? Bleaughhh...
Fake animation..... Watch real factory processes instead of imaginary animation
Made In China.
Sandvik Coromant wheel turning tools are made in Sweden
Gary jonson BULLSHIT !!!
Animated rubbish.
This totally sucks