Having worked on Ampco bronze for 10 years it's nice to see someone working with it. It's nasty, tough and the higher grades are hard to work with. HSS drills have to be altered to drill it and praying it doesn't freeze up in the part. Carbide tooling is preferred to work on it. Tapping is a nightmare. It has excellent wear properties for bearings and shaping metal parts.
You should try polished, high rake inserts for aluminum in aluminum bronze. I get 10 times the tool life compared to a negative rake insert made for steel, and you can take a .001" finish cut without the insert just rubbing and deflecting.
I found bronze is always a pain for that. Espically drilling a big hole. We usally lap the drill when drilling. I have never had a problem turning it but I also use negative rake inserts like he does.
@@HM-Projects Completely different animal. Alu-br will catch with real sharp inserts if you try and feed it REALLY hard, but under normal conditions (up to .400"doc and .015"/rev) I haven't had any issues. Brass on the other hand, stick with negative inserts if you can, or if you have a positive holder like a DCMT, use inserts made for steel. They usually have enough of a k-land edge prep to stop the tool from grabbing. Drills for brass should have the cutting edge blunted with an oil stone to stop it from grabbing.
@@wendull811 Keep in mind that aluminum bronze and normal 660 bearing bronze don't have much in common except "bronze" in the name. Alu-br will work harden if you look at it sideways, where are as brass/bearing bronze can be cut with a dull butter knife and it'll still break a chip. Good call on lapping the cutting edge on drills. It is VIOLENT when those suckers grab, especially if you have a pilot hole.
Sounds smoother than what was produced deacadea ago..original was a witches brew..guy at foundry would litearaly stand there and tell others how much more of different materials to put in
В ampco45 bronze Ni~5%, поэтому стружка вьётся и закручивается в клубок. Программно на CNC прерывайте подачу и стружка не будет скручиваться. Хотя учитывая ваш уровень профессионализма, вы и без меня это знаете :) Привет из Украины!
I'm going to guess that after this bronze job was finished, you to go back to machining 4100 series steel. Thus, having to clean out the machine for the next half hour😂😂
Le laiton est intéressant à travailler à condition d avoir les bonnes conditions de coupe , à l époque j avais usiner des roulements en bronze pour pour des remorques xxl Goldofer multi essieux.
Take a test cut, measure it, enter the dimension into your offset. The height of the tool post is exactly 1.25". Most of my tools are 1.25" or 1". For boring bars I already know what shim to add.
We don't do castings, but it looks like a sand casting. Permanent mold chill casting is better for high-production runs. Sand casting is lower cost in small batches.
@@ChrisMaj a jeśli chodzi o wykończenie tz jak kończysz obróbkę zgrubna zakładasz nóż i płytkę wykańczająca to ile wcześniej zostawiasz naddatku np w tym bronzie
@@ChrisMaj dzieki bardzo mi się udało znaleść pracę w niemczech od czerwca zaczynam I na tokarce(a ja więcej doświadczenia na frezarce mam) więc twoje filmy jak znalazł
Not the vtl, yet. On my lathe I had a small cover plate fly out. I've crashed and the tool pulled out the piece out of the chuck. Luckily it just fell out into the chip pan. Over the years I did have a few close calls.
Where would you buy such a boringbar (big diameter) today? Im on the search and im only finding anti-Vibration Tools over 50mm in dia. I want a 80mm bar, but not with anti vibration and yours looks like anything like that. Thanks you! Very nice machining Videos btw, i love to see your lathe work
Thank you for that kennametal tool idea. Maitnince came over tightened up the belts and we were able to run it thru the 4140 shaft at 67rpm. .400 a side doc at .045ipr. It screamed like no one's buisness but concedering the shaft is 3 inches over size and is 200 inches long I am not sure what they expected. I really wish I could show you some videos like you do but it is agianst the corporation policy.
@@ChrisMaj you are not kidding we got that machine new in 2009. That is the first time it has been purposefully been taking over 40% on the load meter. It was running about 80%
Ув. Крис! Я подписчик вашего канала из Болгарии. Восхищаюсь вашей работи. Так как Ви польского происхождения, позволяю себе писать по русски. Хочу поддержать вашего канала, но если язик Вам не нравится, в виду невладением мной англ и польским язиком, ограничусь только лайкамаи. С уважением и пожеланиями для всего най-лучшего!
Спасибо, что смотрите мои видео. На самом деле я изучал русский язык в школе около 6 лет назад в Польше. Он уже не беглый, но я все еще понимаю довольно много. Если нет, я просто использую Google Translate. Так что, что бы вам ни полегчало, я согласен.
As always another excellent job Chris.Just curious when you do a one off jobs or an expensive piece of material like the one in the video do you trust the machine to cut on tolerance as programmed or leave some material and measure prior to finishing?Even though my cnc lathe is nowhere near in size to yours I still need to do offset adjustments until I get it right.Doing small parts is no problem just throw away the first part if not in tolerance.
this is an NC lathe, right? How do you run parts like this using NC? You're not writing a program to go from start to finish, right? You gotta rough...then measure...then finish cut...
You could CNC turn lead, though I have no idea why you would want to. Rubber is also entirely possible to CNC, either by freezing and cutting with normal tools or by CNC grinding at room temperature.
Bronze machines so much nicer than cast iron. Beautiful job
Nice job Chris, ........ AKA what back in the day we used to call ;- A classy bit of gear.''
I dont like Ampco....
It is so hard to handle.....
Having worked on Ampco bronze for 10 years it's nice to see someone working with it. It's nasty, tough and the higher grades are hard to work with. HSS drills have to be altered to drill it and praying it doesn't freeze up in the part. Carbide tooling is preferred to work on it. Tapping is a nightmare. It has excellent wear properties for bearings and shaping metal parts.
Easy money.
You should try polished, high rake inserts for aluminum in aluminum bronze.
I get 10 times the tool life compared to a negative rake insert made for steel, and you can take a .001" finish cut without the insert just rubbing and deflecting.
Yeah, I might have to try it.
I end up trashing the parts because my high rake inserts catch in brass, does aluminium bronze behave differently ?
I found bronze is always a pain for that. Espically drilling a big hole. We usally lap the drill when drilling. I have never had a problem turning it but I also use negative rake inserts like he does.
@@HM-Projects Completely different animal. Alu-br will catch with real sharp inserts if you try and feed it REALLY hard, but under normal conditions (up to .400"doc and .015"/rev) I haven't had any issues.
Brass on the other hand, stick with negative inserts if you can, or if you have a positive holder like a DCMT, use inserts made for steel. They usually have enough of a k-land edge prep to stop the tool from grabbing.
Drills for brass should have the cutting edge blunted with an oil stone to stop it from grabbing.
@@wendull811 Keep in mind that aluminum bronze and normal 660 bearing bronze don't have much in common except "bronze" in the name.
Alu-br will work harden if you look at it sideways, where are as brass/bearing bronze can be cut with a dull butter knife and it'll still break a chip.
Good call on lapping the cutting edge on drills. It is VIOLENT when those suckers grab, especially if you have a pilot hole.
I hate machining ampco, we do from this material parts for moulding
Wolę robić z tego, jak ten co się tak sypią wióra ja piasek.
Nice work mate👌 it can be tricky getting them oil grooves in the right orientation thanks for sharing 👍
Sounds smoother than what was produced deacadea ago..original was a witches brew..guy at foundry would litearaly stand there and tell others how much more of different materials to put in
If the clean up was easier brass would be heavenly.
This bronze actually cuts really nicely. The one that chips fly like sand, now that's a different story 😅
В ampco45 bronze Ni~5%, поэтому стружка вьётся и закручивается в клубок. Программно на CNC прерывайте подачу и стружка не будет скручиваться.
Хотя учитывая ваш уровень профессионализма, вы и без меня это знаете :)
Привет из Украины!
Very nice, quite complex part
Spot on as usual. Call out some tight tolerances, tighter that I would have expected.
Why does sometimes is coolant used and sometimes it's not?
I'm going to guess that after this bronze job was finished, you to go back to machining 4100 series steel. Thus, having to clean out the machine for the next half hour😂😂
I usually clean up the machine before I do any bronze.
Half industrial part, half jewelry. That bronze really machines up nicely.
Always a pleasure my.friend, another masterpiece!! 😊 Have a great weekend from the states !
What state would that be? 😉
@@ChrisMaj central North Carolina
@@lynmichael8617. I'm in Western North Carolina.
Being able to dial in a surface feet per minute and having it maintained must be great.
Le laiton est intéressant à travailler à condition d avoir les bonnes conditions de coupe , à l époque j avais usiner des roulements en bronze pour pour des remorques xxl Goldofer multi essieux.
ดูแล้วเพลินดี👨🏻🔧👏🏻👍🏻
Nice.
How do you measure your tool offsets on this lathe?
Do you get sick of shimming tools up to height on that tool post?
Take a test cut, measure it, enter the dimension into your offset. The height of the tool post is exactly 1.25". Most of my tools are 1.25" or 1". For boring bars I already know what shim to add.
@@ChrisMaj So the same for grooving tools / threading tools or do you use a known block and slip it between the tip and the workpiece?
good job chris
Some shiny napkin ring there! 😄
Untung ga pake grooving, pusing banget tuh kalau pake grooving apalagi cuma 1 buat atas bawah wowwkk
The dust is carcinogenic
very good casting quality. please tell me, is it centrifugal casting, sand casting or chill casting?
We don't do castings, but it looks like a sand casting. Permanent mold chill casting is better for high-production runs. Sand casting is lower cost in small batches.
That golden popcorn
W jaki sposób ustawiasz noże? Na papierek czy może odbijasz na materiale?
Przeważnie dotykam się na obrotach.
@@ChrisMaj a jeśli chodzi o wykończenie tz jak kończysz obróbkę zgrubna zakładasz nóż i płytkę wykańczająca to ile wcześniej zostawiasz naddatku np w tym bronzie
@@Adam0855 Przeważnie tolerowane średnicę jadę na dwa razy, tak że zostawiam gdzieś na promień płytki.
@@ChrisMaj dzieki bardzo mi się udało znaleść pracę w niemczech od czerwca zaczynam I na tokarce(a ja więcej doświadczenia na frezarce mam) więc twoje filmy jak znalazł
@@Adam0855 To musisz znaleźć jakiś kanał co więcej tłumaczy, bo ja to tyko tak bardziej na pokaz 😅
spoko detal
Hey Chris awesome video!! I’m curious have you ever had a part fly out of the vtl or horizontal?
Not the vtl, yet. On my lathe I had a small cover plate fly out. I've crashed and the tool pulled out the piece out of the chuck. Luckily it just fell out into the chip pan. Over the years I did have a few close calls.
@@ChrisMaj Yeah I guess it would be pretty tough to have something fly out of a vtl haha:) thanks for the reply Chris!
Where would you buy such a boringbar (big diameter) today? Im on the search and im only finding anti-Vibration Tools over 50mm in dia. I want a 80mm bar, but not with anti vibration and yours looks like anything like that.
Thanks you! Very nice machining Videos btw, i love to see your lathe work
O man, I had this boring bar for years. Any tool supplier probably can find one for you.
Shiny Part ✨
Whoa huge chips
I had been turn it metal before ten years! Welding roller
Nice. Like these tricky little jobs.
Thank you for that kennametal tool idea. Maitnince came over tightened up the belts and we were able to run it thru the 4140 shaft at 67rpm. .400 a side doc at .045ipr. It screamed like no one's buisness but concedering the shaft is 3 inches over size and is 200 inches long I am not sure what they expected.
I really wish I could show you some videos like you do but it is agianst the corporation policy.
.45 ipr feed?
lol
Yeah, no one will believe you.
@@loukola5353 my fault typo .045ipr just fixed it
Damn man, go easy on that machine, she's not used to taking cuts like that 😅😉👍
@@ChrisMaj you are not kidding we got that machine new in 2009. That is the first time it has been purposefully been taking over 40% on the load meter. It was running about 80%
Another awesome job. Would love to see your tool change and touch off between tools. Mine take forever.
As usual, beautiful work.
Ув. Крис! Я подписчик вашего канала из Болгарии. Восхищаюсь вашей работи. Так как Ви польского происхождения, позволяю себе писать по русски. Хочу поддержать вашего канала, но если язик Вам не нравится, в виду невладением мной англ и польским язиком, ограничусь только лайкамаи. С уважением и пожеланиями для всего най-лучшего!
Спасибо, что смотрите мои видео. На самом деле я изучал русский язык в школе около 6 лет назад в Польше. Он уже не беглый, но я все еще понимаю довольно много. Если нет, я просто использую Google Translate. Так что, что бы вам ни полегчало, я согласен.
@@ChrisMaj Благодаря,Крис!(бг)
Uwielbiam jak wióry latają jak szalone 😁
Bardzo szybkie frezowanie, operator to jest gość 👍🏻😂
Z tego brązu lecą wióra podobne do stali. To nie jest ten co sypie się jak piasek. Na frezowanie nie było czasu, tylko tak przelotem.
As always another excellent job Chris.Just curious when you do a one off jobs or an expensive piece of material like the one in the video do you trust the machine to cut on tolerance as programmed or leave some material and measure prior to finishing?Even though my cnc lathe is nowhere near in size to yours I still need to do offset adjustments until I get it right.Doing small parts is no problem just throw away the first part if not in tolerance.
If it's a tight tolerance I always take two cuts, same depth of cut and same feed.
this is an NC lathe, right? How do you run parts like this using NC? You're not writing a program to go from start to finish, right? You gotta rough...then measure...then finish cut...
Just writing the program as I go. Rough and finish.
@@ChrisMaj ah
Incredible work! :o)
Immer wieder schön! - Danke!
i loathe machining Ampco
У Вас отличный контент!
Спасибо, я пытаюсь.👍
Soft - take a wide swath!
Brilliant!👍
id rather cut lead and or rubber over brass or cast iron any day.
you cant cut rubber or lead on a cnc can you
You could CNC turn lead, though I have no idea why you would want to.
Rubber is also entirely possible to CNC, either by freezing and cutting with normal tools or by CNC grinding at room temperature.
great job Chris
Thanks 👍
Добра работа, браво !
Спасибо
@@ChrisMaj , "Благодаря" in Bulgarian :D ;)