Stub Mandrel | CNC Machining

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  • Опубліковано 5 січ 2025

КОМЕНТАРІ • 110

  • @jimsvideos7201
    @jimsvideos7201 Рік тому +5

    I adore the simplicity of the concept and the elegance of the manufacture of these.

  • @bostedtap8399
    @bostedtap8399 Рік тому +5

    Excellent work Chris, using banding is a good idea, normally ive seen metal straps between the segments, Ive built a de-coiler once, a lot smaller though.
    Extension tool holder's were definitely needed that day, love the vibration damper "Thing" 😮.
    Drawing looked good, plenty of notes go aide in machining and build.
    Thanks for sharing

  • @gwharton68
    @gwharton68 Рік тому +4

    Great video. The vibration damper is very smart. At least you don't have to worry about long stringy chips.

  • @bkoholliston
    @bkoholliston Рік тому +8

    Man those tool holder extension blocks are something else! Especially with the added damper. I would have thought you needed a bigger lathe for sure. Very cool to see. Also 4x40 always look so great when you are done.

  • @warrenjones744
    @warrenjones744 Рік тому +3

    Nice turning job an interesting part Chris. Herring bone gears are a work of art!

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Yes, they are! Too bad I have never seen how they make them, only youtube videos.

  • @mftmachining
    @mftmachining Рік тому +4

    Man, Chris, this was excellent. Creativity at its best. I wouldnt have the guts to try such a setup. Hats off. 👍👍👍👀👀👀

  • @scania357
    @scania357 Рік тому +3

    Nice job Chris, that expanding mechanism looks like some tricky matching work. Thanks for sharing.

  • @magaraoleandro
    @magaraoleandro Рік тому +1

    Rare wisdom nowadays! Congrats.

  • @rubisbiker4482
    @rubisbiker4482 Рік тому +1

    Quand on voit l encombrement et la masse de la pièce on se demande comment il va la serrer et la centré et finalement les contraintes d usinage dû au chocs et au déport sont maîtrisés à merveille.

  • @BruceBoschek
    @BruceBoschek Рік тому +1

    Love that lathe! Thank goodness for shim stock. :-) Thanks for another fascinating video, Chris. Hope your Sunday is peaceful.

  • @cyclingbutterbean
    @cyclingbutterbean Рік тому +2

    Beating the shit out of the inserts with that interrupted cut. Well done Chris!

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Yeah, the machine didn't like it either 😅

  • @Donkusdelux
    @Donkusdelux Рік тому +2

    When the extensions come out, that is when you can tell a rigid machine from the rest haha.
    great work Chris!

    • @ChrisMaj
      @ChrisMaj  Рік тому +2

      Yeah, can't complain about the riggity of this lathe.

  • @paulcooper2897
    @paulcooper2897 Рік тому +1

    Wow! A lot of side loading in the carriage!!! Impressive!

  • @tokar035.70rus
    @tokar035.70rus Рік тому +1

    Отличная работа 👍👍👍🇰🇬🇰🇬

  • @mattiasarvidsson8522
    @mattiasarvidsson8522 Рік тому +1

    ppl like you deserve the highest salary in any machine shop.. :)

    • @ChrisMaj
      @ChrisMaj  Рік тому

      I wish!😅

    • @MrKotBonifacy
      @MrKotBonifacy Рік тому

      @@ChrisMaj Forward this comment to da boss... ;-)

  • @lancer2204
    @lancer2204 Рік тому +4

    Your methods worked, you hit spec. The rest can cry all they want.

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Yeah, it worked, but don't expect to hit some tight tolerances with that shim.

    • @DeadlinePhil
      @DeadlinePhil 10 місяців тому

      how does the saying go ? " it ain´t stupid if it work´s"

  • @markfiges999
    @markfiges999 Рік тому +1

    Nice job Chris, and again it was'' Kelly Bar City '' 😎😎😎...... as for those who didn't like your method of getting over runout, perhaps they'd like to post their solutions??

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Sometimes, that shim can make things even worse if you don't keep an eye on it. It tends to move around on you.

  • @sicstar
    @sicstar Рік тому +3

    Nice work! Love that girthy toolholder extension and yeah ... The shim-plate in the live center, been there done that lol... Can be sketchy af, especially with heavy parts like that but more if you have ones that are unbalanced or take a too heavy of a cut. You are very aware what could happen and gonna have an extra eye on it so all gucci there.
    Peace! And good job!

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Yeah, you have to watch that shim cause it tends to move around sometimes.

    • @MrKotBonifacy
      @MrKotBonifacy Рік тому

      _"Love that girthy toolholder extension"_ - Curtis from CEE Australia has got a longer one... I mean, "extension" of course ;-)
      A monster boring bar from down under tthat never gets boring: Making a BIG Boring Bar, ua-cam.com/video/xjNHjjanehc/v-deo.html

  • @stevechambers9166
    @stevechambers9166 Рік тому +2

    That was very impressive you do some incredible work 👍👍👍

  • @zoltannagy1813
    @zoltannagy1813 Рік тому +22

    Nice work on a tricky job... excess tool stick-out and intermittent cuts not making it any easier. Well done Chris.

  • @peterdupont7559
    @peterdupont7559 Рік тому +2

    Just love that "anti vibration thingy".

  • @swanvalleymachineshop
    @swanvalleymachineshop Рік тому +3

    Great set up & result . I bet the dimensioning on the drawing would have had to had a second glance with the open & closed dimensions ! Cheers 👍

  • @andrewtetley3883
    @andrewtetley3883 Рік тому +4

    Great work Chris as always I never got to work on anything so big, we did small end hydraulic stuff. I have to tell you that I got so frustrated through the video….. the drawings kept popping up and I just wanted to spend time looking at them I was they to expand them several times so I could get a better look 🤣🤣🤣🤣🤣🤣
    Keep it coming Chris love your videos and the work you do!!!

    • @ChrisMaj
      @ChrisMaj  Рік тому +2

      I'll try to include more drawings in the video. It's just that some customers are more strict about it than others.

  • @azietxu5779
    @azietxu5779 Рік тому +2

    Detrás de estas imágenes hay mucha experiencia...💪👍

  • @465maltbie
    @465maltbie Рік тому +1

    I am pretty impressed with the insert, considering the overhang and the interrupted cut...Charles

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      They worked surprisingly well.

    • @465maltbie
      @465maltbie Рік тому

      @@ChrisMaj Would you care to share what grade of insert? Charles

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      @@465maltbie kennametal KC9125

  • @manishkainth95
    @manishkainth95 Рік тому +2

    Ur Idea is amazing to have small shim ❤ in centre

  • @markanthonysmith413
    @markanthonysmith413 Рік тому +1

    Another great job Chris.👍

  • @romanbeck1983
    @romanbeck1983 Рік тому +1

    Great work, great video.

  • @aland7236
    @aland7236 Рік тому +2

    11:52 Modern problems require modern solutions. I mean if it works lol. 😂

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Patent pending 😅

    • @aland7236
      @aland7236 Рік тому

      ​​@@ChrisMajWhen I was a teenager I had a 98 Honda Accord, and being a teenager I wanted more faster. I found a brick sized iron (possibly) weight bolted to the front subframe of the car at some weird angle and took it off because less weight is better right. It took me too long of a time to figure out why it was there at all. 😂

  • @paulmace7910
    @paulmace7910 Рік тому +4

    Nice work. Thanks.

  • @andrden6440
    @andrden6440 Рік тому +1

    Very nice surface finish ❤

  • @charlesblanton1008
    @charlesblanton1008 Рік тому +4

    Although designed differently, this looks like what we would call a pay-off reel mandrel where I work. One comes into each side of coil to support while being run through a process, temper mill for example. Just curious if that is the case here and you had a pair of these to do (?). Great work, always interesting to see the machining of the types of components that I install as a millwright. 👍🏻

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Yeah, it's a slitting line-payoff reel.

  • @frankd3024
    @frankd3024 Рік тому +2

    11:54 Vibration absorber, best engineering 😁

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Redneck Vibration-dampening thing 😅

  • @CraigLYoung
    @CraigLYoung Рік тому +3

    Thanks for sharing 👍 dang! How much does the center alone weigh?

  • @pulsenpal7882
    @pulsenpal7882 Рік тому +1

    did you crimp steel strapping off workpiece to a precision diameter--then slip on when turning?

    • @ChrisMaj
      @ChrisMaj  Рік тому

      I've put them on the machine to prevent any play

  • @Grantherum
    @Grantherum Рік тому +1

    at least with this part, you don't have to worry about stringy chips... that interrupted cut takes care of it all for you.

  • @subdude2013
    @subdude2013 Рік тому +1

    AWESOME, WELL DONE!

  • @bhekidlamini51
    @bhekidlamini51 Рік тому +1

    Beautiful work

  • @465maltbie
    @465maltbie Рік тому +1

    It looks like you used several different extension blocks? Charles

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      For each diameter, I had to use different extension.

    • @465maltbie
      @465maltbie Рік тому +1

      @@ChrisMaj Just setting the zero on all those different tools and getting everything to stay true must have been difficult. With those extension you couldnt use the same point for part zero. Your skill is impressive. Charles

  • @proyectosycnc
    @proyectosycnc Рік тому +1

    excelente trabajo

  • @anthonypoltes7413
    @anthonypoltes7413 Рік тому +1

    Now that's a micrometer, holy cow!

  • @Cosmobrosomething
    @Cosmobrosomething 6 місяців тому +1

    Now that's a machine shop

  • @李亮哥
    @李亮哥 Рік тому +1

    做的好,加工這類的成品最損刀具了,做的很完美

  • @jameswood9764
    @jameswood9764 Рік тому +1

    Need a counter weight on other side of tool post to Offset long reach adapter?

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Yeah, maybe it would've helped, but it worked ok

  • @nono-qh6sk
    @nono-qh6sk Рік тому

    Dude, i cant believe the tolerances you have to work with. I saw .001-.002??? Thats nuts! I wouldve thought with something ao big you should have more wiggle room.

  • @LOOKATTHISRAFFF
    @LOOKATTHISRAFFF Рік тому +1

    And now make a mistake, I don't even want to think what those losses would be

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      Let's not go there 😂

  • @lwilton
    @lwilton Рік тому +1

    At least you didn't have to worry much about long stringy chips!

  • @Kamil_Klukowski
    @Kamil_Klukowski Рік тому +1

    O matko, dawno nie był czegoś tak spektakularnego. Co to, jakieś sprzęgło odśrodkowe od piły? Ile mogło ważyć to "berło"? Na Porębie ciężko te promienie pewnie byłoby zrobić?

    • @ChrisMaj
      @ChrisMaj  Рік тому

      To coś tam ma wspólnego z rozwijaniem, czy zwijaniem blachy. Dokładnie, promień na promieniu, ale jak powiesz że trochę za duże na twoją maszynę, to powiedzą że może jakoś zrobisz, bo ja qrwa jestem magikiem.🤣

    • @MrKotBonifacy
      @MrKotBonifacy Рік тому +1

      @@ChrisMaj "Niemożliwe robimy od ręki, ale na cuda trza parę dni poczekać", jak to mówią...

  • @BMan100
    @BMan100 8 місяців тому

    that tool holder extension looks like it's been sitting in the back for some time.

    • @ChrisMaj
      @ChrisMaj  8 місяців тому

      Yeah, it's for a special occasions only.

  • @tricolorbart1980de
    @tricolorbart1980de Рік тому +1

    Did you build the holder extension yourself or were they purchased parts? In any case, your video is very interesting and exciting. How many cnmg plates did you use on the segments?
    nice greetings from Germany

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      All made in the house a long time ago. If you find the right insert for interrupted cuts, they last surprisingly long.

  • @johnboforsyth5970
    @johnboforsyth5970 10 місяців тому

    What is something like this used for? Good work as always.

  • @renatocesar8399
    @renatocesar8399 Рік тому +1

    Trabalho impecável. Principalmente o dispositivo antivibraçao 😂😂😂😂

  • @hinz1
    @hinz1 Рік тому +1

    Would be quite a bad crash, if that steel band had ripped apart ;-)

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      It wouldn't really fall apart. It just has a little play in it, and that keeps it tight.

  • @shoppy00
    @shoppy00 Рік тому +1

    great!

  • @erikslagter3231
    @erikslagter3231 Рік тому +1

    oh man those wooden pallets at the lathe are giving me the creeps.. One wrong step and you're out for a week..

    • @ChrisMaj
      @ChrisMaj  Рік тому

      The space between me and the machine behind me is a bit tight, and they have to squeeze in with the forklift. Every time I would replace the pallet, he would crash into them,so I was like "fuck it"

  • @Nossdreal
    @Nossdreal Рік тому +1

    HANDSOME GUY!!!

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Stop it. My wife reads the comments. 😅

    • @MrKotBonifacy
      @MrKotBonifacy Рік тому +1

      @@ChrisMaj On the other hand, that will make her aware of the competition and (hopefully) make her rethink her matrimonial complacency ;-)

  • @TheBonnetq
    @TheBonnetq Рік тому

    How do you get your metal bands so tight?

  • @jaca2995
    @jaca2995 Рік тому +1

    Ja piernicze ale robota, chylę czoła, pracuję na maszynach konwencjonalnych i podziwiam Pana pracę ;). Gdzie Pan pracuje?

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Za wielką wodą, przedmieścia chicago.

  • @TL....
    @TL.... Рік тому +1

    tak jest

  • @wmitchell51
    @wmitchell51 Рік тому

    This shop looks familiar to me, is this in Tomball?

  • @KSMechanicalEngineering
    @KSMechanicalEngineering Рік тому +1

    Nice machine

  • @ChanghongMetal
    @ChanghongMetal Рік тому +1

    Marvelous1

  • @mikeb1520
    @mikeb1520 Рік тому +2

    You work on some of the weirdest $hit. I thought I worked with unusual machines during my career, but I don’t think I have seen anything remotely like what you seem to come across on a weekly basis.

    • @ChrisMaj
      @ChrisMaj  Рік тому +1

      I think that's why I'm still here in this shop (27 years). All this different shit they throw at me, 😅

  • @Michal_Sobierajski
    @Michal_Sobierajski Рік тому +1

    Mam wrażenie, że nie potraficie robić łatwych detali :D

    • @ChrisMaj
      @ChrisMaj  Рік тому

      Przynajmniej się nie nudzi.