Interrupted turning 

Damn. Any real machinist will admire how impressive this is. Ive never seen anything like this. Normally to do something like this, i have to go 10 thousandths at a time or less, so i dont chip my carbide.

Most aggressive interrupted turning I've ever seen. Why are you feeding towards the tailstock? For the cut geometry on the tool? And is it that drastic angle that allows the aggressiveness to work? Kind of like high-feed milling inserts.

Oh, that's BRUTAL...! It'd be a piece of cake for HSS tooling, though. You can do that sort of thing without even thinking about it if you use jig-ground HSS tooling. Remember... all end mills do this sort of interrupted-cut thing every time they're used.

Awesome

So what tool was this and what was your speeds and feeds?

How to get a square peg to fit in a round hole lol

I once turned a rotor off a gerotor motor shorter to make the motor smaller. Just for fun as I got the motor for free and it was too big. Using chinese carbide. It's so hard that HSS can't even scratch it and very much an interrupted cut. The strategy that worked the best was to engage as deep as possible and feed very slowly. If trying to just take a low depth of cut like most people will intuitively try it would chip the insert immediately.

Interesting. Why are you feeding from left to right?

Turning between centers 101

Nice Schunk chuck

I had to do this with forged parts. Not nearly as big as this but I do appreciate what went into doing this job. But to be honest, I don't understand what is the benefit of doing this rather than turning already round stock; I get a forged part because it's already close to shape. But this stock was made round from square? Can someone fill me in as to why? Good job!

Mega ❤

Nice work! i have similar project with our dmg ctxgamma2000. I am new with millturn machines with b axis. Is this only a test cut or are you confident with machine to run like that all the time without broke anythink?

Wow!

Capto ❤️❤️❤️

Why not start of with round stock? Or is this just a flex lol. Either way it's badass.

Aber Wunderbar!!! Awesome!!!

"CHALLENGE ACCEPTED: HOLD MY BEER" was how this video came about

For interrupted surfaces I use bigger insert radius. Like r0.8, r1.6. Never seen before this vid it is legit to feed backward. It makes sense Btw. Going to try it next time!

How come you don't face mill the corners off first to remove more material? Wouldnt that be quicker then turning them down?

Is the tip okay? I think it has got lots of striking damages

This is the equivalent of running down your nails against a chalkboard

Hot rolled stock

Красавчики, круглое из квадратного, квадратное из гкруглого.

Slow Mo technique at 0:29 is called undersampling. It is not true slo-mo, rather you lower the frame rate enough that the camera takes a shot nearly at the time when the particular face of the job is towards the camera. That's why the chips seem to be placed randomly in each frame.

Why no coolant was used?

Idk about this one!!!

I'm guessing most set ups would just break trying this.

Next. Piramidal 2 square.

but you have a dmg mori .. cheaters 😅

Try that in inconel

Das nächste mal gleich ein rundes Teil nehmen... läufts besser!

It's seem like prime turning, isn't it ?

один вопрос - Зачем ?

Look MUM 🤔 I made a ⬛️ piece of material into a ☻️piece of material 🙂 That's good Son.

5axis? OoO

Ahja DeckelMahoGildemeister/MoriSeiki

What was the point of this ??? Why wud u cast a block of steel just to mill it into a cylinder u cud have just cast a cylinder

В чём прикол такого обратного точения? Нагрузка на подшипник шпинделя, подшипники вращающегося центра, нагрузки на привода в разы выше чем обычным точением. Через месяц такого точения станок можно сдать в металлолом.

И какой в этом смысл 😅

nice way to destroy the tolerances of your machine.

Why such big material? They make a thing called round bar stock too. I can make this part 10x faster and probably a few times cheaper.

Why would they not purchase a forged round for this application? Wasted material.

Yo

Gớm

Feeding backwards, not real smart...

That's an incredible amount of waste that seems like it could have easily been spared.

Когда коту делать нечего ,он яйца лижет)))

Un tondo non lo vendevano?? 🤦‍♂️🤦‍♂️

You are torture testing your spindle as well :(.

This is so cool. What's the song name?

Why not just cut the corners off the damn workpiece first

This is not a big deal.