Diy 5th axis trunnion build part4
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- Опубліковано 29 вер 2024
- Diy 5th axis trunnion build series for my epoxy granite vertrical mill.
Its a B-C configuration trunnion running on Harmonic drives with delta Servo's. Raw material is weighing in 26kg. In this video I am machining the main body that will hold the C axis.
Part 1: www.youtube.co....
Part 2: • Diy 5th axis trunnion ...
Part 3: • Diy 5th axis trunnion ... - Наука та технологія
Excellent work, Stef! You have put a lot of thought into the CAD side, while also considering the CAM, so it should be a fine product. I suspect I'd be finding a way to recover the work by filling and remachining those slots, unless any proper f*ckups occur.
Almost all of my tool breakages are due to recutting, which in turn is due to insufficient removal of the swarf. I've concluded that if you want to run good MRR, you need (very) high coolant flow rates and this is particularly critical for closed cavities / pockets where the swarf and coolant will collect if you don't blow them clear - through holes are helpful for draining it away. I'm not an expert but I would suspect some of your breakages are due to this problem. Until I've got a decent enclosure, I have dialled back my F&S so that I don't spend so much on 10mm cutters!
I note that you did the 3D surfacing with your 10mm tool, IIRC. However, the face mill has a much higher surface speed (4-5 times?), so can achieve the same toolpath in fraction of the time and generates a larger radius cut which is also helpful. These face mills are also good for side cutting, such as the first (adaptive clearing) op you did and are less prone to break. It's easy to think of them as facing tools when in fact they can do a lot more.
One thing that's held me back from doing a 5th axis is the CAM. Do you plan to pay for the damned Fusion "extensions" or will you generate multi axis toolpaths some other way? As it is, my own 4th axis can now only do indexed 4th axis moves, not true simultaneous toolpaths, which really pissed me off, as the changes to Fusion happened just as I was putting the finishing touches to my harmonic drive 4h axis. The extensions come in at something like £200/month, which just isn't going to happen.
Amazing job Stef!!!! I love it!
Tnx
Hi. Good video. When you made presision parts like this with so "tiny" setup - you should reduce feeds and speeds use lighter cuts to avoid displasment of part - this take more time but it will be done
Stef, the endmill snapped because of your lead in, maybe slow the entry, or make the entry radius larger, great video nontheless.
Dang, sometimes it's just one of those parts.
Was just waiting for you too say you lost a tap in one of the holes aswell. But good on you for not giving up.
Awesome work! I was wondering if that angle plate was gonna be sturdy enough to keep the part square. Hopefully you can still use it
Yeah im still unsure if it didn't clamp the vise tight enough to hold it properly. Since the other side went just as how it should be.
Better to use a larger one and screw mounting it on table directly instead by vise clamping method to fix it。
7075 is quite a bit harder from other aluminum types. I'm not surprised the end mills broke. Thanks for sharing this. Great lesson on fixturing as well, might be worth taking the vise off and mounting your plate directly to the table for those operations.
be a lot easier to make that part with a 5th axis (-' the part looks amazing!
Geweldige machine heb je Stef kijk uit na de volgende video’s
Great work, Stef. I call stuff-ups 'prototypes'
Damn, fixturing and work holding are tricky.
Something I don't see on YT is paper between the part and the clamping surface.
Absolutely improves the gripshon...
Unless you personally surface ground that import angle plate I wouldn't trust its trueness.
Didn't like that set up in the first place and had my fingers crossed, bugger.
Pretty much designed to Bolt to a table etc.
You should try a 20mm indexable insert end mill for hogging out or that face mill if it fits.
But good vid, thanks.
I was waiting for this video!
Great progress.
Prob should have tipped the whole vice on its side, from mem those vertex vices are capanle of this actio
Jesus some serious work , machine looks awesome and the parts looks awesome to !!!
Perspex reacts an develop cracks with any liquid that contains acetone…
Good job! As long as its a part for your own projects, always - within reason - try to save it or atleast as you do, justify continue working on it, to gain knowledge.
Looking forward to see your next video!
Just tig weld the bad section and re-machine it. You already spend bunch of time on this part as it is. I would not start over if it is not a customer part.
sir which type of coolant you are using during aluminum cutting?
When you were facing off that side, I thought you were taking too much off for the way you had it mounted. I half expected that to happen.
Gday, I’m glad you keeper going with this part and didn’t scrap it and you showed the mistakes, there’s a lot of channels that never make mistakes but when know that everyone does, I believe you have done a fantastic job, I’ve throughly enjoyed watching this series mate, cheers
Maybe a jack would have prevented the move?
Looking good! Can't wait to see it in action!
beautiful
Looks great! Good Job Stef!
It's not luck brother! 7075 as you know can be extremely challenging. It's gummy and abrasive compared to 6061. Speeds, Feeds, Coolant, Chip clearing, Tools and Coatings are all going to affect success and failure. Did you learn a few things making this part? Then it was a success either way, usable or not!
The old cnc bible says rough out to 1mm then recheck if part has moved before finishing ... i have been caught out a few times like that
Yeah lessens learned on this part. To be fair the second side i checked it almost after each operation 😅
truly amazing !
Yeah, some times luck is just not on our side … never mind, the trunnion design looks solid and I’m sure it will work great. For the angle plate slip, a screw jack under the stick out can always help as insurance policy. Great design and video. Looking forward to the next one. Cheers
Well done. Amazing job.
Sometimes you get parts that give problems for no good reason. I can't wait for the next part.
Angle blocks are designed to be bolted directly to the table, if is old it can be shimmed to get it aligned.
Please don't take it as a put down, I am enjoying this build just offering some constructive criticism and can't wait to see the finished product . 👍
Great video, thanks for sharing your set backs and progress. Much appreciated.
I already built a similar one some years ago. The tunrion is made up of several pieces, they are screw fixing together. I like your challenging method of one sturdy piece although the machining method is a bit difficult. Hoping you finish them all and then the outcome accuracy can be seen.
Good job
Spectacular....
Brilliant!
Wait, is this Stef from CNCZone? :o
Yeah i have a thread on cnczone about the build of my machine.
I would like to see the assembly.
Great video!!!
!plate alu a on bolt and entirely end bad the off Machine
Read it backwards. Phone glitch.
great video and great effort to DIY!!!
Классно!
Ziet er goed uit stef.
Gaaf om te zien hoe je verspaand. Lijkt wel earospace zo veel word er weg gefreest 👌
Ik zag dat je op de laptop een programma hebt om de servodrives te bedienen . Kan je dat ergens downloaden? Of zit dat bij de servo kid.
Mijn servodrives worden deze week geleverd uit China. De 400v drives waren wat slecht leverbaar🙈
Is inderdaad een leuk onderdeel geworden.
Ja heb die software volgens mij op de website van delta gedownload je moet alleen wel de programmeer kabel hebben. Die zit niet standaard bij de driver.
@@Svanitterzon heb je dit absoluut nodig om de servodrives goed in te regelen? Of kan het ook gewoon via het display van de regelaar?
@@Tubben-tools ik heb nog nooit wat ingesteld via het display. Ik doe alles via de software. Zoon kabeltje kost 3 tientjes via de Chinese kanalen.
@@Svanitterzon hij is besteld😁
Great job! Keep it up:)
Excelente trabajo.
Ouch. At first I thought: "Damn, that looks like a $50 piece of aluminium went to scrap..." But later you said it ruined Tool No. 3 - and by the looks of it, this is a $50+ mill, that went south. This gonna be a very expensive 5-axis setup...
Well its the other way around. Its a 120 euro piece of material and 15 euro per endmill😅
@@Svanitterzon Welk merk frezen gebruik je ?
@@JonasDM46 aliexpress ik vermoed ook dat ik een slechte batch heb gehad gezien ik ze normaal eigenlijk nooit breek en zeker niet in de schacht. Je zou verwachten dat ie breekt op de flutes.
Might be a good idea to make yourself some machinist jacks to prop up the part in the hanging section which tilted and then clamp it tight for the future.
I am looking at making myself a few as well.
yeah sounds right, but im still confident about the setup and that i maybe didn't clamped the vice tight enough. anyway lessons learned thats diy life.
@@Svanitterzon yep that is how it goes :) Everytime you learn something new.
Heb je de rondheid van de gaten nog nagemeten? Aangezien je laatste bewerking een fuckton aan materiaal uit het hart van het blok gehaald heeft. Vrijgekomen spanningen in alu doen soms rare dingen.
Nee maar dat is een goeie om te checken. Mijn idee was om alles na te meten als hij geheel in elkaar zit in hoe parallel alles is ten opzichte van de bodem plaat.
@@Svanitterzon oohja dat kan idd ook. Als het nu allemaal wel wat verbogen is, zou ik alles eerst ruwfrezen, incl de kamer, en daarna pas nafrezen. Wel wat meer opspanningen, maar als je die nauwkeurig doet moet dat goed gaan denk ik.
More spindle rpm would be a pretty large improvement to this machine, but i can imagine you dont want to take te spindle apart to put better bearings in it as its probably quite a bit of work :)
well im thinking about buying a second spindle that i then can take apart to improve. So dont have my machine down while i gone try to upgrade it.
Also, I realy enjoyed the long video :D
@@Svanitterzon Thats a pretty smart idea :), the worst thing to happen is needing to mill something to upgrade your mill while you dont have a mill :P
Great video! How long did this part take you to make? (Machining time)
If i take all the toolpaths together in fusion iam at roughly 4 hours of machine time. It took me 3 days to make this part not full days but still longer then 4 hours...
@@Svanitterzon Looking at the chips it was alot of machining, plus with all of the tool breaks and hickups with setting everything up I can imagine it taking so much longer.
For me I always take almost double the amount of time as planned.
@@banzaiwill7672 "For me I always take almost double the amount of time as planned" AMEN