Hi there, could you please help me out with designing a cycloidal gear? how can I figure out the PCD of the holes on the disk? can you suggest any references for finding the answer? Thank you for the helpful video!
Hello again, I'd like to thank you for your guidance on my previous comment. I am still working on my Cycloid Reducer and I am having trouble with finding the suitable material and more technical information such as surface treatment for disk and manufacturing methods. I would really appreciate it if you could help me out or mention any hints so I can continue working on my project. Regards, Amin
Yes, the video shows a test I did for the first time, and I did not assemble the cycloidal gear well and that is why it makes this fluctuation. Now the problem is fixed!
@@MRBEngineering Nice job. I'm going to build a cycloidal reducer and read some papers about it. According to the papers, the torque ripple is intrinsic to these reducers. Could you please mention how you fixed the fluctuation problem? Thanks
That's a nice piece. I will soon make a fourth axis tombstone and the cycloidal reducer seems to me to be a good solution, have you measured the backlash of yours? thank you
This is absolutely fantastic! Since I can't manufacture involute gears I was thinking getting into this approach to add a 4th and (eventually) a 5th axis, I only have a question, are you using angular contact bearings? If you can, can you be specific regarding them? Thank you for this awesome video!
I guess Im asking randomly but does someone know of a way to log back into an Instagram account?? I stupidly forgot the account password. I love any tips you can offer me.
@Ralph Orlando I really appreciate your reply. I got to the site on google and I'm in the hacking process now. Seems to take quite some time so I will get back to you later when my account password hopefully is recovered.
Did you do any tests to see if there was a difference between using 1 or 2 bushings over the pins? my assumption would be that using two would reduce friction so that each gear could have its own busing to roll against but was just curious if you had.
Hi. Can this type of cycloidal profile be manufactured in a gear hobbing machine. I would like to know if any economical way of manufacturing is there. Thanks
as far as I know, their patent is expired since 1990 (patents.google.com/patent/US2906143), and the original name is Strain Wave Gearing en.wikipedia.org/wiki/Strain_wave_gearing
Here is some math: x = R * cos(t) + e * cos(N * t) y = R * sin(t) + e * sin(N * t) R = ring radius N = number of pins e = eccentricity t = 0...2pi Then inset that curve by the radius of the ring pins.
@@dekutree64 or add pin size on formula no inset need lol then use that formula on makro no cam needed just machine it cnc only 20 lines of code. not million that cam do
Awesome process of manufacturing and finished parts👌
Hi there, could you please help me out with designing a cycloidal gear? how can I figure out the PCD of the holes on the disk? can you suggest any references for finding the answer? Thank you for the helpful video!
Sure, have a look at this video! th-cam.com/video/SWIx3GgqrAg/w-d-xo.html I hope it helps you!
Beautiful workmanship!
congratulations!!! very impressive, why did you choose a cycloidal reducer instead of a planetary?
Hello again, I'd like to thank you for your guidance on my previous comment. I am still working on my Cycloid Reducer and I am having trouble with finding the suitable material and more technical information such as surface treatment for disk and manufacturing methods. I would really appreciate it if you could help me out or mention any hints so I can continue working on my project.
Regards,
Amin
why is the speed of the link fluctuating between 3:40 and 4:00? Is it due to torque ripple caused by cycloidal gearbox?
Yes, the video shows a test I did for the first time, and I did not assemble the cycloidal gear well and that is why it makes this fluctuation. Now the problem is fixed!
@@MRBEngineering Nice job. I'm going to build a cycloidal reducer and read some papers about it. According to the papers, the torque ripple is intrinsic to these reducers. Could you please mention how you fixed the fluctuation problem?
Thanks
That's a nice piece. I will soon make a fourth axis tombstone and the cycloidal reducer seems to me to be a good solution, have you measured the backlash of yours? thank you
This is absolutely fantastic! Since I can't manufacture involute gears I was thinking getting into this approach to add a 4th and (eventually) a 5th axis, I only have a question, are you using angular contact bearings? If you can, can you be specific regarding them?
Thank you for this awesome video!
Thank you for your comment. I use radial ball bearings, so, this cycloidal drive is not appropiate for high axial loads. You're wellcome!
How thrilling to watch! REALLY cool.
Is there any spacer between the two cycloidal gears? Will they touch each other?
Watched with pleasure! Have
you measured the rated torque and backlash?
I guess Im asking randomly but does someone know of a way to log back into an Instagram account??
I stupidly forgot the account password. I love any tips you can offer me.
@Carmelo Hank instablaster =)
@Ralph Orlando I really appreciate your reply. I got to the site on google and I'm in the hacking process now.
Seems to take quite some time so I will get back to you later when my account password hopefully is recovered.
@Ralph Orlando it did the trick and I now got access to my account again. I am so happy:D
Thanks so much, you saved my ass!
@Carmelo Hank happy to help xD
Great job, looks like it was a lot of work to make that. I wish you would have put a 30-lb weight at the end so I can see if it can lift it or not.
so beautiful, a piece of art :)
Thank you! I really appreciate your comment (:
do you have the design in inventor?
That was awesome work!
Do you have any backlash problems?
Tanks!
Not really, but it could be better. It have 6 arcmin aprox
@@MRBEngineering 6 arcmin is so small. Nice job. Any comment on the machining tolerance? I assume the backlash is due to the tolerance, right?
after year heavy use every robot need replace.even without backlash there will be after use
great job!
thanks for sharing the video, can you share cad files of these design
Very nice. I'm just starting to self study robotics. What type of positional sensors do you recomend? Also I'm a new subscriber have a good day.
Thank you!
Well, It depends on your application, but I recommend you to take a look at absolute encoders.
@@MRBEngineering Thank you for your quick response. I will definitely study that.
Did you do any tests to see if there was a difference between using 1 or 2 bushings over the pins? my assumption would be that using two would reduce friction so that each gear could have its own busing to roll against but was just curious if you had.
Awesome. Is the cad file available to download
this is super cool. Is the stepper driving this a worm? or a bevel gear?
Thank you! Is worm, yes.
Awesome work!
Hi. Can this type of cycloidal profile be manufactured in a gear hobbing machine. I would like to know if any economical way of manufacturing is there. Thanks
How did you manufacture the eccentric shaft?
What material are you using ?
have you tested the backlash?
ofc there is and will after use
Nice Work !!
Hi, how big is the advantage over plastic? Could you estimate how much more torque you'll get out of it?
Alumíniumból van a ciklois kerék?
Do You have cad files? Thanks for this. I am looking for a good reduction gearbox for my robot arm.
Good job, guys! Where'd you come from ?
Thank you! form Catalonia, Spain. I am making an industrial robot arm, this video was only to show the cycloidal reducers that incorporates(:
@@MRBEngineering Are you near from Tarragona? Im building similar robots and I know very little people doing this type of projects.
@@MrFuxya Doncs jo sóc de Girona, i sí, som molt pocs jejeje
Is there an advantage, compared to the harmonic drive ?
Is it about handling higher torque or lower backlash ?
Harmonic Drive are proprietary and very expensive. But they are better with nearly no backlash.
as far as I know, their patent is expired since 1990 (patents.google.com/patent/US2906143), and the original name is Strain Wave Gearing en.wikipedia.org/wiki/Strain_wave_gearing
@@gabrielbreahna9576 go go patent build them sell them under 100 axis you rule robot market soon..and then monie flow
really awesome
Drive pins are too loose. Hard to achieve precise movement out of it
awesome job, looks super clean!! would love to know if you can share your files on this project
whats the grade of aluminium for the cycloidal disc?
What is the play angle of the output element?
What stepper drivers are you using? What is the measured efficiency?
not use any.he will have end when parts weight too much need bigger motor that make more weight
Motors can be found here:
www.rta-iberica.es/es
1st DoF: 103-H7126-1740 (NEMA 23)
2nd DoF: 103-H7823-1740 (NEMA 24)
3rd DoF: 103-H7126-6640 (NEMA 23)
www.omc-stepperonline.com//?tracking=5e945881ea67e
4th DoF: 23HS22-2804S-PG47 (NEMA 23)
5th & 6th DoF: 17HS19-1684S-PG5 (NEMA 17)
nice work
Is it back drivable ?
Yes! :)
Awesome!
Hey great work!
Do you have any good resources for a beginner that wants to model and create cycloidal gears? Thanks :)
Here is some math:
x = R * cos(t) + e * cos(N * t)
y = R * sin(t) + e * sin(N * t)
R = ring radius
N = number of pins
e = eccentricity
t = 0...2pi
Then inset that curve by the radius of the ring pins.
@@dekutree64 or add pin size on formula no inset need lol then use that formula on makro no cam needed just machine it cnc only 20 lines of code. not million that cam do
@@jarisipilainen3875 Is there a simple math trick to inset the formula? I tried but it got messy.
cooool!
CNC Porn, great project ! love it
Haha thank you!
Do you have plana?
do you have the video of the final robot arm?
Check out this video th-cam.com/video/tHW4r5i9dEE/w-d-xo.html
Is this back driveable?
Yes, it is (: take a look at this video: th-cam.com/video/U9Mq-FqiDDY/w-d-xo.html
then it suck xD good robot stay place when power off
@@jarisipilainen3875 So why do my $60k Yaskawa Motoman robots all have brakes on each axis servo motor?
CAD files for residents of other countries please. Thank you.
100 subs this week!
can I order one?
from guy who do it allmost manual way
@@jarisipilainen3875 Where are your gear reducers? You like to make negative comments, put up or shut up!
T O P
you still have 96% to go before you can make any workable reducer....
As you can see in the video, the reducer works. I hope to see your video showing how you make a 100% workable reducer from scratch. Thank you (:
Well... someone has obviously too much money and time to spend.
You gotta spend money to make money.