CNC Machined vs 3D Printed Cycloidal Drive
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Рік томуCheck out PCBWay CNC Machining services: www.pcbway.com/?from=HowToMec...
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Parts list (check website article for full list, affiliate links):
Amazon.com:
6mm Steel Cylinder Rod: amzn.to/3POEqfr
8mm Bushings : amzn.to/3Jnbk4x
Bearing 35x47x7 6807-2RS: amzn.to/3fATTgL
AliExpress:
6mm Steel Cylinder Rod: alii.pub/6f4xwg
8mm Bushings: alii.pub/6f4vt7
Bearing 35x47x7 6807-2RS: alii.pub/66b1tw
In this video, we will take a look at my new updated version of the cycloidal drive that I made in the previous video, with 19:1 reduction ratio and see how it performs made with CNC machined parts versus made with 3D printed parts.
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@HowToMechatronics Рік тому
Check out my favorite 3D printers, the K1 Max: amzn.to/3txQUC6 or if you are on a budget, the Ender-3 V3 SE: amzn.to/3FkCPus I hope you enjoyed this video and learned something new! If you'd like to support me making more content like this, please consider supporting me on Patreon: www.patreon.com/howtomechatronics
@kaiseraugustus1393 Рік тому
@How To Mechatronics: Hello, I want to buy the Solidworks for Makers and use your 20% discount, but unfortunatelly the link doesn't work for applying the discount - do you have a discount code, which I can use?
@HowToMechatronics Рік тому
@@kaiseraugustus1393 Hey, please check the links in the description again, I've just updated them with the special 20% off discount offer.
@joeboxter3635 Рік тому
Do you have a website with write up of this?
@schizotism3633 Рік тому
@@HowToMechatronics Hi.. Are you available right now?
@MrSniker-gg3fg 9 місяців тому
hey man i am expert in pcb designing so if you need my service i can work for you i need some work i do pcb designing multiple layers
@RandomCrap309 Рік тому
Those parametric equations would've been a HUGE help to me and my design team a couple months ago XD. We were using a lengthier method to create some 3-D printed cycloidal disks for a robotics project. Glad to see this method though! Saving this video for future reference :)
@HowToMechatronics Рік тому
Glad I could help!
@chadjensenster Рік тому
I made a cycloidal for the gearboxes of a robot arm for my capstone mechanical engineering project. They are nice because it's easy to have the reducer on the robotic arm and it looks good too. Great video. Thanks for taking the time and presenting it.
@HowToMechatronics Рік тому
Yeah, cycloidal drivers can be great choice for robotic arms builds.
@m.sierra5258 Рік тому
As both motors were skipping, I was really curious about the internal damage caused. Sad that you didn't show that. I'd love it even more if you would maybe replace the top with acrylic to see what's going on inside
@Flashbang_Photo Рік тому
Skipping doesn't cause any damage, as is something steppers do exactly to avoid damage
@m.sierra5258 Рік тому
@@Flashbang_Photo I don't think the stepper was skipping, I think the drive was skipping. The only experiment where the motor was skipping was with the small motor and the machined drive. The backlash was too large for the motor to be the one skipping in the other tests, imo
@superdau Рік тому
@@m.sierra5258 If this drive skips, it is permanently broken (as most gear boxes are). The skipping was the stepper motor reaching its torque limit and losing steps. Btw. that's not something steppers do to avoid damage, it's just something that happens when the torque limit is reached (which is defined by the current to motors get, which in turn is set by the stepper driver).
@m.sierra5258 Рік тому
@@superdau where does the max torque difference between the printed and machined box then come from? I don't see how the ratio would differ. Or is plastic just that much more lossy?
@_seriousrob_ Рік тому
@@m.sierra5258 The plastic can't transfer all the torque to the stick. Some of the torque is lost due to the plastic giving up, as the damage at the end showed. Other materials than PLA might hold up better.
@eDRoaCH Рік тому
this is a really interesting comparison. I wonder what the best of both worlds would be. If you just put the cnc cyclodial disks or maybe other parts in the 3d printed version I wonder if its power/weight ratio would beat out the other 2 alone
@chrisnatale5901 Рік тому
Going through the CAD design for a cycloidal drive was very helpful. Thanks!
@HowToMechatronics Рік тому
Glad it was helpful! Cheers!
@aldobruno712 Рік тому
Many congratulations! how much was the cost of the CNC parts?
@IcanCwhatUsay Рік тому
You should definitely do a video on how you've setup your printer. Your prints are great looking!
@MukeshKumar-jw6ji Рік тому
Nicely explained with a good project. 👍 I think CNC's product gives better results rather than printing machine. Printing machine's product are of PBC which are worne out at the rubbing areas and can malfunction due to clearance where as the CNC machine's product are of metal and by greasing it can give a better results in comparison to printing product.
@HappyMathDad Рік тому
I have been trying to make an almost 100% 3d printed planetary gear box with good efficiency. And I've already noticed a huge difference between gear generator softwares. I think that's how youtuber Paul gold got 30 Newton meters of torque out of a smaller stepper with a 3d printed cyclodial gear. Your measurements of a 1 to 3 decrease in performance Is significant. I would love if Paul measured the efficiency too. But beggars can't be choosers. Love the video!!!
@HowToMechatronics Рік тому
Thanks for the input!
@khroomlet8821 Рік тому
Beautiful motor! I've been looking for something for a DIY coffee grinder. How much did the metal motor cost from PCBWay?
@ryanmckenna2047 8 місяців тому
Could you do this with strain wave gear / harmonic drive?
@doverivermedia3937 Рік тому
Wow. I'm so glad I discovered your channel. Excellent resource and very insightful. Thank you ... 🇬🇧
@HowToMechatronics Рік тому
Welcome!
@dekutree64 Рік тому
I tried SF1 bushings at one point too (and HK needle bearings before that), but nowadays I press PTFE tube into brass tube to make low-friction bushings whatever length I want and without any seam. Although it is fairly time consuming cutting and deburring a large number of tubes to precise length, even with a tubing cutter. And not all PTFE tubes are concentric, so it can be trouble finding a good supplier.
@brianmgs2006 Рік тому
A lathe may be ideal for that kind of precision cutting
@ToreDL87 3 місяці тому
@@brianmgs2006 Was gonna say that, get PTFE tubes with greater wall thickness, smaller ID bigger OD, machine, broach & sand to spec, so you get cheaper materials and greater accuracy, problem solved.
@wenbodong5717 Рік тому
"it's a precision drive" then "let's grind it with a dremel" JK lol. Great work man!
@HowToMechatronics Рік тому
😁
@2150dalek Рік тому
Amazing mechanical design.... Thanks for the video !
@soscilogical1904 Рік тому
This is really good because it tells me that it's a really nice design and it's far to many components to be a low cost solution for a budget product, which is good info.
@Tom_videa Рік тому
I think it would also help to use sturdier material for 3D printed parts. I personally use polycarbonate for these high stress parts, as PLA is softer and it can wear quite easily.
@HowToMechatronics Рік тому
Thanks for the input!
@dzitiatri Рік тому
What head and bed temp you are using on polycarbonate ? I am just curious to buy and try PC too
@Tom_videa Рік тому
@@dzitiatri I use default Prusaslicer values, it works really well.
@adamrak7560 10 місяців тому
Try carbon fiber nylon too, if you can. And you could probably do well with carbon fiber PETG, it is amazingly stiff!
@kaptn_kapton 7 місяців тому
I startet printing polycarbonate and it works very nice! I use 110°C bed and 290°C nozzle and a polycarbonate sheet as print plate.
@stevebabiak6997 Рік тому
The housings on these should have some sort of mounting flanges on them; clamping them as was done in this video shows that the housings themselves move up and down, implying that all forces aren’t being transferred to the load.
@nullfi7148 Рік тому
Cycloidal drives are super interesting, you should do this video format for a planetary gear drive build next. Keep going mate, great content and already subscribed : ]
@HowToMechatronics Рік тому
Thank you and welcome!
@CleonanTehGnome Рік тому
Can you characterize the thermal differences with extended use?
@jimmym2719 Рік тому
Fine job , thanks bro for sharing the details info 💕
@gordonpromish9218 Рік тому
does the 15% loss in output occurs as sound, vibration, and heating? if so, where in the mechanism is most of the loss occurring? to improve efficiency or at least to improve durability at speed under load, what kind of mitigation would be beneficial? Would cooling be necessary during prolonged use?
@cirdiam1800 Рік тому
Very good - thanks for making and sharing the video.
@HowToMechatronics Рік тому
Glad you enjoyed it!
@russell.w1452 Рік тому
Great video ❤️… i have a question, how did you make that animation of the object splitting in many piece at timesstamp 0:47
@rameshkp7860 Рік тому
Hi, You are great to teach about CNC. Congratulations.
@sceiluug Рік тому
i am wondering of there is also a reduction in noise in between them
@christianedelmann6880 Рік тому
I used to work at a company that made those kinds of planar polymer bearing/bushings and they are almost exclusively made to be pressfit into a tight fit bore. Maybe a design iteration would be to get a ground thin walled tube and pressfit the bushes into them. Also those kinds of contact surfaces should be hardened and ground to a fine surface finish. Obviously not super easy to do but better gearbox life
@jBurn_ Рік тому
first thing i noticed. Those bushings are not designed for his use. The "oversized" measurement is as it should be to have a tight fit. Even the inner diameter is too lose as long as they are not pressed into a bore. You can see it at 12:01 with your bare eye, that the bushings have radial play on the shafts...
@HowToMechatronics Рік тому
Thanks for the input. Yeah I realized that a bit late, and also they ware easily available.
@dragasan Рік тому
I learned a lot - thank you! (And I love Solidworks)
@HowToMechatronics Рік тому
Glad it was helpful!
@Sam-dv3vt Рік тому
worth waiting for your new video
@johnmcnamara3719 Рік тому
Fantastic effort I love it! :)
@HowToMechatronics Рік тому
Thank you! Cheers!
@pgjuzek Рік тому
awesome build
@thomasmackay4 Рік тому
Regarding modeling technique; is there a reason why not a 0 to 2pi/(number lobes) and a radial symmetry by number of lobes? is that to avoid surface modeling lines? coming from a Catia V5 modeling experience. gap with a spline just irks me and probably is creating some odd tribology down stream.
@johnathonwalty8915 3 місяці тому
Great video. Nice testing experiments. 👍
@sergiofurini6127 Рік тому
as always very very interesting! thanks for sharing
@HowToMechatronics Рік тому
Glad you enjoyed it!
@steve_jabz Рік тому
Does the model currently up have the clearance built in you were talking about?
@Loro310 Рік тому
Amazing channel!! Great work!!
@HowToMechatronics Рік тому
Thank you! Cheers!
@Niels_tenDam Рік тому
U can use 3MF file format instead of STL. It can store more info with smaller size.
@snorttroll4379 9 місяців тому
How does it work for an ebike? A 1 to 100 drive
@moses5407 10 місяців тому
Apologies if this has been answered already. How backdrivable is the cnc machined version? Thanks for this great work!
@The_Unobtainium Рік тому
How can you tell the parts were "exactly the same as in the "project"? I haven't seen micrometer in your hand to check it:)
@Alfaduk Рік тому
These cycloidal drive reduction drives are very interesting. I wonder about their capacity work at increasing motor speed. Essentially driving the unit from the output shaft, to increase the drive of the input shaft. An example would be a centrifugal supercharger where the input shaft might be driven to say 6000rpm, but the output might need to be 100,000rpm.
@vilsonandrade8191 Рік тому
Very nice project Congrats from 🇧🇷🇧🇷🇧🇷
@DmytroVT Рік тому
What is the cost of all CNC parts?
@AnthonyvanHamond Рік тому
the fact he didn't disclose it in the video says enough :-) (he's sponsored. if he was not, it would have been extremely costly :-) )
@HX2003 Рік тому
I paid around 60 usd to make a single shaft coupling approx 50*50*25mm with them. I have yet to receive it though, I hope it will fit otherwise it would money wasted.
@marcus_w0 Рік тому
At this part count, I would guess around $600 to $1000 US.
@eatonasher3398 Рік тому
I'd say around 1500-2000usd (source: I'm a prototype machinist) The undercut of the main housing and the two flats on the eccentric shaft adapter add complexity to it. If you wanted the gears to be high precision then I'd recommend using 4140 prehard (versus jig grinding, which would be more accurate but much more expensive), not stainless steel. That way you could also use better/harder bushings (drill bushings) which would increase performance significantly without increasing cost significantly. Fill it up with some sticky grease and boom!
@jimmym2719 Рік тому
Ya, custom CNC is expensive. Unless u have your own.
@MaxDetlefson Рік тому
How much did the CNC version order cost?
@enott Рік тому
You are mechatronics Gladiator 💪
@oni2ink 9 місяців тому
Very interesting and nice design. What is the price difference between the CNC machined and 3d printed version, out of curiosity? Maybe an hybrid version would be interesting, with only the discs machined...
@paul5683 3 місяці тому
Cost difference is pointless if the printed part fails prematurely.
@oni2ink 3 місяці тому
@@paul5683 it depends on your use case, if it's for long-term use yes of course.
@zhuzhoubettertungstencarbi7424 2 місяці тому
Love watching it!
@PCBWay Рік тому
You never stop to amaze us 👍👍👍
@HowToMechatronics Рік тому
Thanks!
@JoeTaber Рік тому
Good collab! I'm curious about how much a quote for those parts would total. I understand quotes are temporary for good reasons, but a ballpark would be nice.
@cvspvr Рік тому
jlcpcb > pcbway
@PCBWay Рік тому
@@JoeTaber About $700 for 15 pieces with DHL courier service.
@patracy Рік тому
@@PCBWay well, I submitted a quote for a set of parts. Guess that answers that. Ooof.
@eirikkalstad6007 Рік тому
Very educational video!
@svenbauerle7277 Рік тому
Super video, thank you ! Do you know somebody who sells all parts as a set ? yours sincerly Sven
@FUKTxProductions Рік тому
isnt this subjective to the 3d printer/print quality you use? also fdm/resin/sls (eg printer type)? plus your method of cnc machining?
@beatfight1 Рік тому
Greetings from the company that manufactures these gearboxes. 👋🏻 I work at Sumitomo Cyclo in Germany.
@KhangNguyen-dn6nt 8 місяців тому
I have a sleeping problem and this video have helped ;)
@frankdearr2772 Місяць тому
great topic, thanks 👍
@HowToMechatronics Місяць тому
Glad you liked it!
@kinzokushirogane1594 Рік тому
What is it that is skipping inside the gearbox once it reaches max torque?
@matthewmeans871 5 місяців тому
Also, for these parts from PCBway, I'm curious, how much did this cost?
@FCFDave Рік тому
Very nice design and presentation.
@HowToMechatronics Рік тому
Thank you! Cheers!
@Caribbeanminds Рік тому
I need a sprocket or something that can work with a motor and bicycle axle. For my e-bike build. In Florida
@raymondvaage2300 9 місяців тому
Was it expensive to get those parts manufactured by PCBWay ?
@chrisBruner Рік тому
good job! A question, why do you need bushings around the cylinder, wouldn't the cycloidal gears just roll on the pins (assuming the right size)? Bushings shouldn't be moving should they?
@HowToMechatronics Рік тому
The bushings should move, that's rolling and it would produce less friction than the cycloidal disk sliding on the pins directly. Also they can be replaced more easy if they out.
@felixslothower6180 Рік тому
Very cool project, always fun to assemble your own cnc'd parts!
@kalmorgan2925 Рік тому
Can you get the same mechanical and electrical properties with 3D printed material?
@davib8963 Рік тому
super cool, i'd like to make one as well.
@bibinthomas369 5 днів тому
Is it legal to use your gearbox design for commercial purpose.
@matthewmeans871 5 місяців тому
after seeing the failure of the threaded inserts at 18:17, I had to look at my own design and question whether the inserts would fail for a 13 Nm application on the output shaft, however in looking back I realized that you only had the torque distributed on two pins for that whole load rather than the whole 6 pins available. This leaves me more hopeful? I'll comment back on this whether I get significant plastic deformation for my version as well.
@lezbriddon 3 місяці тому
for strength and cost saving 3d print outer case and front/back but cnc moving parts?
@HowToMechatronics 3 місяці тому
Yes, that would be great combo.
@dragansolarov7875 Рік тому
because it has low/zero backlash this type of mechanism probably can be used for star-trackers and guiders too.
@sanchitpatil6970 Рік тому
Are the distance ring in the CNC Machined Drive 3d printed ?
@Frankkakdslasdkasd Рік тому
Amazing video!
@HowToMechatronics Рік тому
Thanks!
@albertolionello3435 Рік тому
Hi Franco, I work for Sumitomo and we are the inventor of Cyclo drive System. If you are interested we can describe the advantage of this principle compared to other system. Thanks.
@oliverer3 Рік тому
I made the original 3d printed version of this a while ago and it served me well but it was an utter pain in the ass to assemble.
@haydenc2742 Рік тому
Is there an RPM limit on these types of drives...could you put high RPM (say 10-50K RPM) on them and get heavy reduction or would that cause problems?
@slevinshafel9395 Рік тому
problem. vibration and friction(wich is heat)
@empatikokumalar8202 5 місяців тому
What is the name of the device you used to measure at 0:29?
@TheLordbruh 11 місяців тому
What is best cycloidal or planetary?
@math-electric2049 Рік тому
Wow thanks❤
@StanislavJochman Рік тому
How much is it to order parts from PCBWay?
@nepotech7517 Рік тому
Can you make video on open pnp cnc?
@alitn588 Рік тому
What about the lubricant ? Doesn't need ?
@camiloguerrero4632 Рік тому
Hola. Exelente proyecto. Quería saber si es posible realizar este mismo proyecto con la combinación de impresora 3d y cnc láser co2, máquinas de escritorio. Combinado con pla y mdf, madera o acrílico. La idea es hacer robótica a una escala más grande. Pero con materiales más económicos como el mdf y Pla. Para realizar una caja de engranajes de reducción de velocidad y ganar más fuerza con los motores. Muchas gracias por tu trabajo es una inspiración para todos.
@stefanrodic5398 Рік тому
You are back!
@HowToMechatronics Рік тому
Yeah, I guess I'm back with each new video. 😅
@trentoncarr Рік тому
Hi Awesome work, the Solidworks files does not exist?
@DestructoXxShaunxX Рік тому
I like how you say "distance ring", as opposed to "SPACER!!" @IvanMiranda
@ddegn Рік тому
How To Mechatronics should be fined each time he missed an opportunity to say *SPACER.* It was still a great video even though there wasn't enough SPACERs in it.
@superdau Рік тому
I wold really like to see a comparison with a planetary gear of the same reduction (probably needs to be 2-stage). At the same outside dimensions a planetary gear would be a beast.
@HowToMechatronics Рік тому
Yeah, that would be an interesting comparison. I might make one. Cheers!
@daiaki1975 Рік тому
In case both CNC and 3D print are hybridized, what parts should be CNC machined? I think backrash and housing rigidity are important, so cycroid gears, bush housing, input shaft and output bush housing should be aluminum. Outercase, motormount, some sims, output basement can be printed. How about your opinion?
@mpbello Рік тому
When you mix materials with very different thermal expansion coefficients, in a gear that is supposed to be quite precise and have low backlash, you are in for some adventure.
@jamesquinn6662 Рік тому
Its be interesting to see a mostly 3d printed housing, bearing cartridge etc but with a cnc input and output shaft and cyclodal disk. Try and reduce some of the mass of the cnc
@HowToMechatronics Рік тому
Yeah, that's a good point. A combination of the two versions would be best solution for some DIY projects. The cycloidal disks are most important in this case I think and they can be made out of some metal material, in combination with some metal rollers.
@sanjudevi2052 Рік тому
Mujhe CNC traning chayiye tha aur ya jo aap kaam sikha sakte ho
@FilmFactry Рік тому
I wonder if with some patience, you could CNC the aluminum parts with one of those inexpensive 3018 CNCs?
@Shocker99 Рік тому
Not strong enough for the appropriate speeds and feeds to get a good finish.
@joansparky4439 Рік тому
@@Shocker99 not to mention that a lot of the features in those parts would require a CNC lathe or some other 4/5 axis CNC machine and as far as I'm aware 4th/5th axis hobby CNC builds are rare and currently unable to produce parts like this (accuracy, holding forces, etc.)
@overlordmelon2325 10 місяців тому
You could try using drill bushings instead, they are pretty accurate if a bit expensive. Otherwise if PCBWay is sponsoring you might as well just order some custom lol, I've ordered hardened 440C bushings from them and they came out quite accurate too.
@HowToMechatronics 10 місяців тому
Thank for the input!
@TheInsaneupsdriver Рік тому
you could add 2 more disks thinner and lighter at a 90 degree angle to the others for a superior longer lasting one.
@Personal-rc7cy Рік тому
What's the name of the tool you use to measure the newton centimeters at 14:24?
@Personal-rc7cy Рік тому
I found it, and I provided a link, but it looks like UKposts deleted it. It's called a "Digital Force Gauge Push Pull Gauge Tester"
@ReclaimerStudios 11 місяців тому
Perhaps having the drives filled with some transmission fluid might help with the gear slipping/damage.
@juri1190 Рік тому
How much did every motor cost?
@amazac9869 Рік тому
Excellent trials, any noise dB readings?
@HowToMechatronics Рік тому
Yeah, I forgot to take noise dB readings.
@temyraverdana6421 Рік тому
Wonderful!
@HowToMechatronics Рік тому
Thank you! Cheers!
@filmweaver2013 Рік тому
AWESOME!
@HowToMechatronics Рік тому
Thanks!
@xoxot_shamana Рік тому
Интересная конструкция. Чем она лучше или хуже обычной планетарной передачи?
@richardbryant5455 Рік тому
Hi I’m not an engineer or scientist just a fan After watching your video with commercials Very well done I applaud you… Could this device replace the clockwork of my telescope mount in that it has minimal backlash?
@davesmith9342 Рік тому
Harmonic gearboxes are used on the more expensive mounts and have zero backlash.
@danroswell Рік тому
Thanks!
@HowToMechatronics Рік тому
Thank you!
@settlece Рік тому
thanks
@h3Xh3Xh3X Рік тому
I wish you would include cost for each version
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