Roll Shaft | New Thread Gage 2"-4½ L.H.

Roll Shaft | New Thread Gage 2"-4½ L.H. | CNC Machining

Рет қаралды 72,534

Chris Maj

Жыл бұрын

Пікірлер: 87

@shawnhuk Жыл бұрын

Loved the “oops, that’s a left hand thread” slight of hand lol.

@ChrisMaj Жыл бұрын

Habit, before the brain catches on, it's L.H. thread 😅

@marciomusto9264 10 ай бұрын

Duas paixões para mim, usinagem e guitarra no final para fechar com chave de ouro.Parabens pelo canal,show!!

@forrestaddy9644 Жыл бұрын

You do nice work, Chris. Efficient, ordered, accurate, consistent, and, in effect, esthetically pleasing to those with the eye to appreciate such things.

@rescobar8572 Жыл бұрын

You make this look SO EASY! Great job and video from a dam Great machinist! Thanks for sharing 👍

@ChrisMaj Жыл бұрын

Glad you enjoyed it.

@rescobar8572 Жыл бұрын

@@ChrisMaj I learn from them. Thank you for sharing your techniques!

@schlaznger8049 Жыл бұрын

Your machine handles some heavy cut's. Nice job!

@BruceBoschek Жыл бұрын

Bravo! Beautiful work with a big, blind, left-hand threaded hole. Great job, Chris.

@ChrisMaj Жыл бұрын

You just have to trust yourself that you entered the numbers correctly and hit that start button. 😅

@johnlawler1626 Жыл бұрын

Turned out well, thanks for sharing 👍

@captcarlos Жыл бұрын

Nice job Chris. I miss CNC threading. Although, it's more exciting to do internal left hand threads on a manual lathe!

@warrenjones744 Жыл бұрын

I am pretty sure I have said this in the past, You and your company make some pretty interesting big parts.

@ChrisMaj Жыл бұрын

I appreciate that!👍

@paulrash2886 Жыл бұрын

Top Hand Quality Work Chris.

@ChrisMaj Жыл бұрын

Thanks 👍

@chienmt2910 Жыл бұрын

Perfect ❤

@zoltannagy1813 Жыл бұрын

Beautiful work Chris. That left hand blind hole thread would have scared the shit out of me (on a manual lathe)

@mikeb1520 Жыл бұрын

Why? I thread internal right hand threads that way all the time, threading away from the chuck is a piece of cake on a manual lathe.

@ChrisMaj Жыл бұрын

I've always found it easier threading blind holes inside out, especially small diameters, where you can't really see anything. Honestly I'm surprised this isn't done more often, especially on manual machines without a kick out. Machining to a shoulder can be intimidating and exhausting for even the saltiest shop dog, all their bravado asidely. (Yes, I've done plenty of manual machining before youtube and cell phones 😅)

@joseamerico2612 Жыл бұрын

Beautiful work, Chris 👌👌🇧🇷🇧🇷🇧🇷

@ChrisMaj Жыл бұрын

Thank you so much 😀

@theessexhunter1305 Жыл бұрын

That thread was a dogs nuts of a fit Chris.

@ChrisMaj Жыл бұрын

😅 thanks.

@parnuzutech Жыл бұрын

good job you are awesome friends 👍

@CncFrezar Жыл бұрын

An interesting preparation for falling chips👍😃

@ChrisMaj Жыл бұрын

Makes clean up a lot easier 😅

@josefanhani1270 Жыл бұрын

Tenho muitas saudades dos meus tempos de torneiro mecânico,estou com 71 anos mais ainda sei trabalhar.

@marcioroberto7423 Жыл бұрын

A VOCAÇÃO ESTAS NO SANGUE, QUANDO GOSTAMOS DE ALGO, FAZEMOS COM MAESTRIA , ISSO NAO SE ESQUECE JAMAIS...

@user-po5tv8uu7w Жыл бұрын

대한민국 한국기계공작하고 똑한네요? 한국기계 잘했습니다. 기술전수해 주고 쫑나고 돌아왔네요 .참 잘했습니다.

@juliusmilo5959 Жыл бұрын

Vymakané...Nice...

@currentbatches6205 Жыл бұрын

5:55 - How are the 'cushions' fastened to the jaws? 7:53 - Very nice surfaces! 9:25 - Was watching Kurtis face ~8" stock on his fixed-speed lathe. He's good, but there is no way to get a consistent surface finish all the way to the C/L. 12:11 - Doesn't it worry you a bit when the chips are so unequal? 13:25 - Once turned a blind internal thread in a face-plate for a little-bitty Jet lathe I had at the time, R.H! Sweated bullets the entire time, but also had the sense to make a thread gauge first. As always, quality work. Fun to watch a pro at work.

@ChrisMaj Жыл бұрын

5:55 aluminum shims held by jaw pressure. 7:53 it turned out alright. 9:25 constant surface speed makes everything look better 11:29 Oooo come on, they look almost identical on both sides of the drill 😅, unless you're talking about something else. Internal threading is pretty straightforward using cnc. Just make sure you got your tool length and your numbers right before hitting that cycle start button.

@currentbatches6205 Жыл бұрын

@@ChrisMaj "Internal threading is pretty straightforward using cnc. Just make sure you got your tool length and your numbers right before hitting that cycle start button." The rest of us sweat bullets; good job.

@hansweeyee9134 Жыл бұрын

@@ChrisMaj Chris how is a shaft indicated in the steady rest?

@CraigLYoung Жыл бұрын

Thanks for sharing 👍

@ChrisMaj Жыл бұрын

Thanks for watching

@SR-ml4dn Жыл бұрын

Superior craftsmanship, like the runout was zero, not easy to do.

@truegret7778 Жыл бұрын

Beautiful precision work, Chris. On the long run, do you have to change inserts to hold the 6.500"/6.498" diameter? You really do amazing work. Very hypnotic and impressive. Thank you.

@ChrisMaj Жыл бұрын

Usually, one insert corner will last for the entire piece, well, most of the time.

@D08048 Жыл бұрын

👍👍👍🤝

@Spikeydelic Жыл бұрын

LOOOOOL @11:20 I actually felt phantom vibrations in my feet as ther big drill went in.. Am i brainwashed by my job? :D again.. your videos are amazing!

@lumpyfix8124 Жыл бұрын

Thats purdy

@jimsvideos7201 Жыл бұрын

As threads go, that left-hand one is the strangest I've ever heard of.

@TheMetalButcher Жыл бұрын

Standard UNC pitch.

@ChrisMaj Жыл бұрын

Our minds are not used to left-hand threads, I guess .

@ehamster Жыл бұрын

Have you heard from Dave Wilkes? (UK trepanning guy). Haven’t heard from him for a while. Hope he’s OK

@ChrisMaj Жыл бұрын

No, nothing. He didn't post anything for about 2 years now, but I saw his comment on Titans a while ago, so I guess he's alright. I did ask him how is he, but he didn't reply back.

@markanthonysmith413 Жыл бұрын

Great video Chris, for a job like that how long does it take start to finish, Regards Mark

@ChrisMaj Жыл бұрын

It's a little different for production work and one-offs. Us being a repair machine shop, sometimes I'll start a job then take it out cause something urgent comes in. I have to setup everything, write the program, and finish the work. Making just one piece always takes a little longer cause you have to check the program as you go.

@christianfeldmann8287 Жыл бұрын

What Brand are the Inserat? Nice Chip flow!

@ChrisMaj Жыл бұрын

Roughing- Kennametal, finishing- Korloy, threading- Iscar.

@eviethekiwi7178 Жыл бұрын

do you drill by hand with the wheel on the tailstock? or do you lock it to the carriage and run it as a cycle?

@ChrisMaj Жыл бұрын

If I'm doing only one piece, I'll go by hand. If I'm doing more parts, then I'll use my toolpost attachment .

@chatnik78 Жыл бұрын

Hast du vor dem linken Innengewinde einen Freistich am Anfang gemacht oder nicht? Weil du ansonsten mit der Gewindebohrstange immer ins Volle gestochen hättest. Deine Videos sind wie immer eine Freude 👍😉

@ChrisMaj Жыл бұрын

Ja, es gibt einen Hinterschnitt auf der Rückseite, nur um es dem Gewindewerkzeug etwas leichter zu machen.

@russmgd Жыл бұрын

What brand and model lathe is that? Nice work.

@ChrisMaj Жыл бұрын

Hankook PROTEC-9NC

@kevind1865 Жыл бұрын

Does the lathe have a ball screw for X and Z or does it use (edit) a lead screw or helical rack with scales and backlash compensation?

@ikbendusan Жыл бұрын

ballscrews, of the ground variant

@ChrisMaj Жыл бұрын

High precision ball screws for both axes.

@adam-1112 Жыл бұрын

Przyznaj, że lekki stresik był 12:58 😅😅

@ChrisMaj Жыл бұрын

Głębokość była sprawdzona bez obrotów przed wciśnięciem zielonego guzika 😅

@pulsenpal7882 Жыл бұрын

do you also use full profile thread inserts?

@ChrisMaj Жыл бұрын

No, never. I like these much more. I can do any thread, any pitch with the same insert.

@antwanski88 Жыл бұрын

Honest question. A shaft that long, what was the first operation. How did you put the center in. Did you have to use a different machine before setting it up in the cnc lathe?

@ChrisMaj Жыл бұрын

The centers were done on a horizontal boring mill, and the rest is in the video.

@antwanski88 Жыл бұрын

I figured that was how you started the shaft. I run a doosan 5100lmb that does not have a steady rest, yet. I've had to use a manual lathe for the centers or a boring mill. Thanks for the answer!

@mattpinto2351 Жыл бұрын

How much stock do you leave before the finishing pass on the tight tolerances?

@ChrisMaj Жыл бұрын

Most of the time, I'll leave 0.100" (2.54 mm) on diameter. On tight tolerances, I always take two cuts. First, just to make sure I'm not getting any taper, and then I'll do the final cut.

@mattpinto2351 Жыл бұрын

@@ChrisMaj you are a master at your craft, and I appreciate your response