Fascinating World of Thread Whirling | Titanium Bone Screws
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- Опубліковано 27 кві 2024
- CNC Machining Genius. Machinist teaches how to thread whirl bone screws on a Tornos DT 26 Swiss Lathe.
Bone Screws are a multi-million dollar industry and they need to be made perfectly. Donnie Hinske shows you how to do that on the Tornos DT 26 Swiss Machine with a process called thread whirling. Normally bone screws are machined out of titanium but Donnie also runs the part out of brass to show every step of how this flawless medical device is made.
Learn more about the Tornos DT26 - bit.ly/3MDcqLh
00:00 Why Thread Whirling
00:38 Machining Titanium Bone Screw
00:55 Machining Process Breakdown in Brass
03:18 Pro Tip for Longer lasting Inserts
03:33 In Depth look at Thread Whirling Tool
04:07 Closer Look at Inserts on Shadow Graph
05:10 How Donnie got 7 Bone Screws in His Shoulder
05:53 Testing out the Bone Screws
07:25 Join CncExpert.com
07:55 Conclusion and Outtakes
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#CNC #Machining #Machinist - Наука та технологія
I work in medical machining and run multiple swiss lathes. I’ve used thread whirling and single point threading when making screws. I personally prefer using single point because I find it easier to adjust offsets and it’s faster to change 1 insert instead of six when tooling chips out. The company I work for has talked about switching over all of the lathes to thread whirling because it’s marginally faster than single point and I really hope they don’t just from an operator standpoint
Remind them that your time is expensive comparatively, and the savings don't offset the money spent in calibration time
@@daveb3910 careful, though they will always look for a way to automate that portion too and your time is no longer valuable to them.
What type of screws are used for carbonfibre
Dude, all of this looks unnecessarily brutally expensive...
I wonder if a tool could be made to switch blades faster .
Very cool process! We take for granted all this modern tech. Thanks for showing us!
Amazing video. I hardly knew that kind of threading can be done in sections and have the pitch matched perfectly. That's respect.
This whole channel is soo impressive
Another great video Donnie! I thought you had that injury in that 50 mile an hour downhill wipeout thing . . . So happy you survived that time of life! Shoutout to the video crew on this. Amazing job!
No that bail was just a concussion and a bunch of missing skin. This one happened by the boardwalk in PH. Also thanks ma!
"The Titanium Bone Screws" --what a great name for a heavy metal band.
The production quality just keeps gettin better 😎
I forgot their name but i used to whirl these screws with .1 mm right handed thread and .08 mm left handed thread that'd sit between two parts and move one of them .02 mm per turn
It was for some mechanish meant to be under a special microscope and allow the operator to turn the knob and move that part precisely without any electronics nearby
Its really cool to see the inserts I make actually in use. Same with the polygonal turning.
The icing on the cake would have been Titan walking by in the end with a fake sling on 🤣
Another great vid team!✌
I think this was my favorite video you guys have ever made!
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Titan
😁🙏🤙
PH horn is simply one of the best tooling manufactures out there
swiss machining
This guy is my absolute hero :D i like all his videos
You're becoming a great showman dude, huge props!
6:17 time mark. That pain of metal making it’s way in to the bones… it woke me up during my surgery. I remember that like it was yesterday.
Sorry to hear that you’ve had to do work while in this situation. These things do make you stronger.
Thanks for all the educational content.
My company makes medical screws and we use thread whirlers
3 thoughts:
Never heard it called a "shadow graph" before; we were taught they were called an "optical comparator". Looked up hexalo, couldn't find that name for machining a star bit engagement.
Finally, amazing how bone screws look like furniture screws for MDF or OSB.
lmao I was thinking of the same thing . I guess in today if you don't k now what it is you just make shit up .
It’s a comparator, these guys are far more personality than technical
They do get to play with neat toys
Hexalobe. Also known as Torx®.
It's called a shadow graph here in Aus as well
@@terminus.est. when you buy these machines from companies that make them they are listed as Optical Comparators .
A bunch of those types of inserts pass through my hands to get coated. Always nice to see how they are used.
After watching exactly half of it, I had to recall my like because there was too much kidding in this one.
I have a titanium tapered grub screw about 40 mm long by 6-7 at the wide end and 3-4 at the narrow end ,holding my left scaphoid together( wrist/thumb area), sandwiching a 'spacer' bit of bone from my arm. My right third metacarpal has six screws holding a radial break together, I was allowed to watch that operation while it was being carried out and they look just like tiny cheese head self tappers, you can feel the screw heads through the flesh ,a plate and four screws that look like those in the thumbnail picture, in my left collar bone.I'm worth a fortune in scrap😂
I worked 8 years doing those screws in a Tornos Deco 20. Whirlings and Madaula external threads too. The externals are easier to service and spot when they are chipped.
Great energy 😂, amazing video🎉
The Star SD-26 is similar to this machine, with 2 programmable b-axis locations and with the additional y2 axis on the backworking.
With a double unit, you could fit 3 whirling heads in a 2 path gang-slide machine.
Crazy doing that without a turret.
That is a very nice part,I used to use Coventry die heads and still do,but that's another level
I rolled a Jeep and have had rods put in and out of my back a few times. I had a titanium screw break on me. Still have the broke off portion of it in my vertebrae. It’s been fun!!
It's AMAZING to me how many different kinds of processes there are in the CNC world! Make my baby 4 axis seem like a toy!
PS don't breathe bone dust, it can be DEADLY!
Me, watching this video and reading these comments while my CNC router, with a 300w spindle and an ER11 collet on a 400mmx300mm bed, is working away taking a 0.7mm depth of cut at 300mm~/minute: 😐😐😐🤐🤐🤐😶😶😶
In hardwood, btw 😂🤷🏼♂️😂
We have practically the same story about how we ended up with screws in our body.
I broke my medial malleolus (the bump on the inside of your ankle) while longboarding.
out of curiosity how much does it cost per unit to make titanium ones? Ive been looking it to getting dental implants an they want to charge $5k per titanium insert not fees and labor just for the insert i need at least 8 of them.
Really wish y'all actually spent more time showing and explaining the whole whirling process, how it works at all, and less on like... Drilling into a femur
Defeats the purpose of the paywall on their academy. This channel is an teaser trailer for that.
@@tylerakerfeldt7220 the academy is free though dude. Only thing you need is an email to sign up with
@@TylerTITANSofCNCTippit then it’s just them being numb to machining and thinking bone splitting is more exciting to watch than these super complex and precise machines
@@tylerakerfeldt7220complex? Not so much math an intuitive thinking yes but complex not so much
Nah as a man with some scews and plates,i wanted to see this. I had never though about it but i saw the thumbnail, thing looks like a deck screw and i was like riiiight now i NEED to know.
Hello there, is it possible to machine a double lead bone screw using only one whirling unit? We have been using two whirling units but looking for possible alternatives here. Thanks
6:20 shots fired haha
Also got 5 of them. Because i had motorcycle incident. One got removed so today i only have 4
My company does whirling but we do whiling on bars ranging from 10mm to 120mm for lifting jacks.
That application was relatively tame compared to other orthopedic operating rooms.
There's usually more hammering.
What brand is the high-speed air spindle? Or, is Swiss proprietary for this machine? Could not quite make out the engraved markings.
Titanium is pretty cool. The machines that you need to tool it is even cooler.
I didnt know they were machined. Shows how much they teach us biomedical engineers
You guys are funny! Love my TEAM!
Interesting. At first, not knowing what this did, I was expecting it to be some sort of cross between a roller and a die. I am now curious what exactly is so special about thread whirling for this. Why is it able to hold such tolerances compared to other methods? I can understand the regular ol thread cutting with an insert, but why does this do better (apparently) than dies and rollers?
Hmm, I have a few in my Leg. Although I have to say right after my op it was a vast improvement in comfort compared to before the op. [got to love green stick fractures]
awesome, thx
Now make some polyaxial heads and show the internal threads on those!!
That would be cool!!
That was awesome! Got the same scar as you, only uglier I'm afraid. Great job. Ciao, Marco.
Great video Donnie,
Better keep it to cnc machining then orthopedic surgeon 😂
Ps: who is missing from the milling devision?
I am used to seeing these techniques on inconel, but mostly single point threading, not whirling. I miss dealing with overseeing those contracts.
I like your vids. Been doing bone screws, tulips, etc. for 20years and I have seen Y2 ball screws snapped in half on these DT26 and similar Tsugami nobody know the reason, but surely they share same parts bin from China.
No wonder why L20 is the best selling machine in US Right 😅
I came here because of the ak50 but since I have some of these I am intrigued
Monday before Easter i broke the ball off the end of the upper arm bone at the elbow, they inserted 5 screws to hold it all back together.
Dr showed me a week later the type of screws he used, they look like some medieval torture device......
Interesting to see machine made threads, I used to drills threads by hand or on the lathe machine.
4:06 Donnie having issues with his Portkey. Use Floo powder next time if there's a chimney handy.
I Lost ya @ 00:58...... got up to speed @ 2:58...... I'm still a bit behind but @ 6:16 that is so cool... could use these in my wood shop🤗... wow.
So is the reason for whirling over custom single point or geometric die head for production speed? I don't see how a buttress thread makes it any more complicated.
Well that explains it.....the reason why Donnie is always screwing around at work 😁🤣. Very cool process making those screws though, thread whirling seems like it is super slick.
I have two screws that broke in my c6. i had c3-c6 acdf. fun times
It's a slow process for certain reasons at certain applications.
To compare to the single point method, you are creating a polygonal approximation so to speak, so you need to keep the degrees per second feed quite fine to make it look round enough. Single point is in constant contact on each pass with a much faster feed in z. This makes an actual round shape. Finally, if you imagine doing the revs calculation for the spindle for single point, compared to the rpm for the whirling head, you find a problem. The whirling head must also revolve much slower because of the diameters you use. If you have M16, you would be basing the revs on surface speed, pi and bar diameter. For thread whirling, the inside of the whirling head tips is the effective diameter to choose. The whirling head will have clearance to enable exiting the workpiece. Maybe the diameter is 22mm. So now the same formula has the rpm much slower than before on the spindle. So making the material a round approximation and selecting the correct revs for the whirling head tips makes it slower in certain applications. Choose one for the correct application and buyer beware.
You might say that you only do one pass with a whirling head, but an M12x36 in 316 stainless, would take 20 seconds. The thread whirling would be nearly a minute long.
Plus if.you machine a stud with a thread at each end, you can partially divide the cycle time as the sub spindle can do the second end. So a complete double ended stud would be near 30 seconds for a conventional single point method on a Swiss. That would take perhaps 2 minutes 20 seconds if you do both thread ends with the whirling head.
If you suggest thread rolling, these machines are fast but with lighter torque. So tougher material in bigger diameters will have the collet slip.
If you think thread whirling is cool, you should check out the Emuge punch tap process.
I've watched a bunch of your videos, always interesting and informative. In the very near future, i may end up with screws that you manufactured. (3 sternal plates and maybe 22 screws(?) ) Even though you tend to be an annoying AF young person, thank you for your knowledge and expertise in the manufacturing process of medical grade hardware. 🙂 (Compliment, dig and a smiley face all in one. If you can't laugh about that...... go home)
I r a machinist. I also have made dme. I wonder if the screws i made are in my body.
6 screws. 2 plates. And wire.
When can we get a Swiss academy?
We plan on releasing it next year… BOOM!
@@TITANSofCNC that’s why you guys are The best in the business
Nice I got one of those on my star swiss! I'd much rather have a roller for the stuff we make but oh well I didn't pay for it
ok , so how much does a typical bone screw cost ?
love the directing in your newest video, and amazing threads!. but it sure sucks that theres no public healthcare in the us.
I have straight-up stainless steel machine screws in my leg. Navy said titanium was too expensive.
In us they call it a shadow graff in Denmark we call is a profile projector
Find it funny for some reason that it's name is so different depending on witch country it's in
I broke my collar bone by having a quad bike fall on my chest after a failed landing attempt. Fun times!
I run 6 sliding head machine and make mini bone screw can you make it 1.5 mm diameter and 0.7 pitch
I wish I could make such high end parts instead of the shitty ones I currently do
I have 4 of these and 2 large pins and a bottle jack made from titanium
What makes this thread profile different than a deck screw?
The med tech company can patent it and charge $300 per screw
He said that the pitch is different for different kinds of bones.
Citizen has this too
I've never heard of it called a shadow graph. We call it an optical comparator.
how much$ per screw?
I am working in Turkey I have produced dental implants and brain and spine implants I have been doing this job for 13 years, we think how we can remove it in a short time and better quality, rather than how the product is made, now we have tried this system, it is definitely a nice but costly system.
Hey if you ever want to sell that longboard, let me know!
I have 40 of them in my right arm on both sides and two long rods they are not that bad to have in
The ops manager at work had a total ankle replacement couple years now. Still has to elevate leg . He still has a few bad habits. He is 48 or 9. He elected to go for a lower GI. Guess what buddy here it comes. The bore scope. I awoke prior to work finish. I saw a nodule removed. The scope was marked off in mms. Looked like a tiny bump on the inside of a flesh colored vacuum cleaner hose. Dr. said thats as far as we can go. lets go back and get that last one and we are done. I declined third time.
ive got 14 of those holding my collarbone together
I thought a bone screw was a special screw before realizing that it was a screw for the bone.
I think technically speaking it is still a special screw.
PH horn for the lathes is godtier.
If you really want a machining challenge show how a variable angle locking screw and plate are made. Or a variable thread compression screw.
At least you're shoulder looks good. I had similar surgery done, mine looks like crap..
The gagging made that video so worth watching!!!
I have actually made them!
I have about 20 of them in my leg
I'm incredibly sorry you had to experience a bone break like that. That is unfathomably painful, but you already knew that.
Будьте здоровы!
Lo siento por esto pero este tipo se parece muchísimo a fofo marquez
Interesting tech. I could do without the "carnival barker" . Edge PRecision and Abom are more my style.
I have five screws in my arm who look just like that one
don't cheap out on the inserts for the whirler, you'll save yourself from having to double check them on the OC before you use them
Когда он вкручивал шуруп в кость, меня аж передернуло ..
opening in the mill department? yall willing to take on an apprentice 😅😅😂😂
I got 9 of these suckers in my neck
i have 9 of thoes in my shoulder after a motorcycle crash SHATTERED my collar bone in a motorcycle crash.
Surgical Stainless? You would be perfect for a infomercial.
dark!
Anyone else get a timmy from wkuk vibe?
So... Basically, it's an evolved version of thread die, but with replaceable inserts and off-center rotation.