4:55 did anyone else hear the tool holder hit the jaws?

When we did this in our school the professor was right there over our head to watch us. But it is a try, from a student, who can be better tomorrow if he tries. No need to judje him. Because when all you started this job you didnt knew a shit !

The work on this is beyond words. As a novice Cnc op. How he touches off the chuck to pass over air before the rough cutting begins ending at a light caress finish that leads to an almost water marked mark to end the program with a thread psÿcl amazes me all without coolant and almost tattoo like style, my hat is off to you good sir.🙏🏽

Ohh this is the one that crashed out and is all over the interwebs. Its actually nice to see what became of it

We have some haas CNC in school too, but I did not know mechanical engineering student can use it until few weeks ago, since these fancy stuffs are in aerospace school building. I only used manual lathe in this semester, this part could take me a month using the manual lathe. Definitely make works much easier!!!!

4:65 Regards from the Revolver - it had sexytime with the chuck.

at 4:56 it sounds like touched the chuck? :)

Quick code on a haas lathe makes them one of the easiest machines to operate. I used to run one of these and it was by far the best thing since sliced bread

You're learning. I've taken a class as well and had a teacher not qualified. Im lucky to have a machinist that's willing to help my mistakes. Hope you find one too.

For someone just learning to program, this is not too bad. keep at it and the fine touch will happen....

5 passes cutting air?

Sounded like you skimmed the jaws on the finishing pass there

Too much feed for roughing = tool kill

Would Love to see an example of making a Rotax 277 2 Stroke Crank Halves or other Rotax Single!

Most insert packets have recommended speeds and feeds on them. Your SFM looks good in most of the videos, but your feedrate for roughing is way too high and your DoC is too low on almost everything, but especially on finishing. The result is poor tool life.

This is airsharpening lathe!

we all learn from a mistake right ...keep it up man

very nice

We learn through mistakes and gain experience at the same time. You didn't crash that matters more than the part. Finish of the part can be better but just keep trying there bud!

Cool video, keep it up, You just need to learn the Canned cycles, specially G71. The only criticism I have is that around the 5 minute mark you took a skim cut and that's a no no since it wears out the tool a lot faster and you also kissed the chuck a bit but then again you're in the process of learning so GOOD JOB ^_^ As for Doug, you see he was born knowing everything, He never went to school or had to pick up a book or learn a thing.

Just wanted to say that after reading all these comments I wonder how you ever dared to put an other video online? Don't get discouraged, your still in school so don't mind what other people tell you to do, at least you are learning a trade that can get you somewhere, I'm in Europe so It's a bit far I think but I'd hire you I'm sure after a few weeks in our company you'd do things like this with your eyes closed! I myself never had the chance to learn CNC programing, when I went to school it was all conventional milling and turning however when I got out of school I continued the conventional way for a while and bought my first Haas CNC (Super Mini Mill 2) when I was 25 after working in some small company's I decided I could do this work myself! so a year later I bought an ST10 and went on form there, in a few weeks I'll be getting mu new VM-3 so I didn't know s*** about CNC programming and now I work full time for the automotive industries as well as many other sectors! I'm 32 now and in just 5 years I have gone from not knowing simple G code to operating small and large CNC mills, lathes, Wire EDM, Sinker EDM, CNC grinding etc... So no mater what you learn in school it's what you do afterwards that counts and how much effort you will invest! Don't give any attention to what other people say to bring you down, chances are at one point or another they will always bump into someone that is way smarter than they are, but then again I don't think those people would acknowledge it!

Have they shown you how to use a dti yet? XD would have made the groove concentricity a lot better. good start though looks like you're learning a lot :)

There’s a fail compilation that has this part. That’s why it was cutting air and the part was partially machine and weird at the face

m4 at the beginning or is it just the video?

tool holder: *"I want to die"*

what lathe was this done on ?

I'm pretty new at this as well, so take my comments with a grain of salt. And if any old timers on here want to correct me, please do. It does look like the feed is too high for the speed. If the school set your max, you probably still would have wanted to reduce your feed to compensate for the lower speed. It also looked like it was wobbling kind of a lot at the beginning. Yeah, turning will take care of most of that, but if there's a tight tolerance on run out, I don't think you'll get less than .001 on that. If they don't care then I guess that's fine. No point in indicating if that's not an important feature. But since it's a school project I would assume they wanted something like that. So I guess my question is, did you indicate the stock when you put it in, or am I just seeing things?

can you show this program please

Hey boss, can I have a new insert? Boss: didn’t I just give you one yesterday? Tf did you do with it?

Is coolant banned in your shop?

If i dare to do this at my school they are beatin' my ass

too fast...

Hello, do you still work at the Haas lathe?

Ok.. as a lathe programmer this hurts my head, why on the end contour (radii) didn't you use a G71? Why all the air cuts? Why were there two finish passes (second of which did NOTHING!) I'm going to program and run this this week in spare time... watch for it

That single point thread tho

I feel like the part is wobbling

wow your cutting air like no body's business wow adjust your depths of cut not to mention the feed wowow

A lot of times it not uncommon to brush the jaws of the chuck do to inertia from the jaws clamping force. If the jaws are properly turned this is not an issue. But with raw stock being what it is, occasionally jaw flex can occur. Now close/clamp jaws shut & Run an indicator across each face and chances are they’ll all be out a very small amount. Now spin that chuck at 3000 rpm, and rotational mass takes that to a whole new level. Not to mention this is a student learning here and we all have crash a tool, myself included. Ive been a CNC machinist 39 yrs. that’s called learning.

A bunch of master machinist in the comment section

what is that cutting tool. forged steel, brass oxide or carbide?

It looks like your work offset was set in front of your part .100 or so, I guess its a good thing or it would be another lathe crash video. I'm glad to see kids trying to do something other than invent some stupid APP.

es mi impresion o esa pieza a salido volando? esta descentrada y tiene marcas de varia cogidas....

I think i've seen this in a CNC Crash Compilation

Good Video. Dont get discouraged by idiots. We all started off not knowing anything. Hey you didn't crash the machine so you're doing ok lol. google a feeds and speeds calculator and go based off the manufacturers specs.

No coolant? Why?!

Face you, in my opinion gave variso pass any increase in the Void, this program MUST be regenerated

needs a center drilled hole with a tail stock the thing is moving all over the place. That would also allow for greater depth of cuts and better finish...that machine cuts air really well though....lol

Why are you face turning?

Me doy cuenta que al principio cuando desvasta el que programo hizo codigos inecesarios ya que no tocaba el cortador con la pieza Pero eso no es tan importante aun asi hizo un bien trabajo

why do you need to stop the rack @ 2:20 and forward again and again? I don't understand?

Big allowance

Profi !

This is my job at the school in indonesian

Daaaamn, pretty bad programming. On 4:45 you hit the chuck.

朋友說讚分享

i was waiting CRASH. why part is on chuck like that? its gripping only 1/6 lenght of piece lol. and yes hand programming is easy G71 G72 G76 G2 G3

Why no lubricant?

ДИЛЕТАНТ

Sir muze program banake dikha do may Haas machine pe Kam Kar Raha hu

if i would see one of my trainees cuttin air like this i would slap the hell out of him

I think using coolant is more better for your workpiece and bite

Type 2 G71 to center would of made this 6 min video a 2 min video

way are you not using coolant on the turning process you will burn the turning bits out,

What's the machine and material?

4:54 chuck hit? :P

at 4.55........oops.

What the hell was that at 4:03???

How many of these have you made? Hahahahaha

This guy is a BUTCHER!!

ฟีดโคตรไวอ้ะ

This workpiece was got accident😀😊

They limited ypur speeds amd feeds because it already chuncked once clearly lol

Ap 0,5mm professional ;p

if i programmed like that i would have got the sack

Ideally, it would have a greater DOC with less feed. Overall not too bad, gotta start somewhere. Your radial depth should never be less than you tool nose radius, generally speaking.

I don't know how tool did not broke...

can tell you hada ew goes settingbthe bar in jaws with al those jaw marks on it

roughing part hurt my heart and my soul everytime that insert entered the part. Feedrate way too high, dept of cut way too low. I wouldn't risk a tool only to be able to film it tbh.

From what I can see your feedrate is way to high and your depth of cut is too small, you'll increase your tool life.

Can I have your real name please and what school you are going to? I want to make sure I never hire you or any of the students that go through this "training".

Very much NOT the way I would have programmed that part!

Poor machine, thats a nasty ass program.

you should rather take bigger depths of cut and a slower feedrate

Hey guy, im a german machining mechanic ( Zerspanungsmechaniker ). First it is not a bad Programm for a prototyp part or for a teaching example but in a series production u will never become much success with that many air cuts and the horrible finishing process.

Feed is exta fast....

Why did you engage the M23 before the threading there is no relief to be cut it's just cutting air, unnecessary

What the hell was that? all wrong.

The reason you crashed that part the first time was because your feedrate was too fast... Decrease your feedrate and inrease the DOC

What tha hell too many free cuts

Depth of cut is too small and the feed is too fast.

Blue chips at 5:07. Not good.

beginners!

Зачем я это посмотрел!?

Canned codes dude, just canned codes

No coolant is ridiculous... can see that by the finish and the fact the insert is sparking... could do a better job manually surely.

Just about everything is wrong with this

no

Way to high rpm bro !!!! And the constant surface speed is wrong !!! Retracts way to far - but it looks like a good program .

Tolerance + - 2mm

What a waste of machine time... And mine.