Harmonic Drives explained
ฝัง
- เผยแพร่เมื่อ 26 พ.ย. 2019
- This is a free preview of one lesson in the "Robotic Drives and Physics" course available on Jet Pack Academy and new for winter of 2019. In this lesson, Ian explains what a harmonic drive (or strain wave drive) is and how it works.
Preview and enroll in the course here: jetpackacademy.com/shop/robot...
Transcript:
![Supernova - aespa エスパ 에스파 [Music Bank] | KBS WORLD TV 240517](http://i.ytimg.com/vi/bepqfR-pxY0/mqdefault.jpg)
Your setup was so clear that it was immediately easy to comprehend. Good teacher.
Agreed, reminds me of the old Docs from the 40s explaining planetary gears transmissions and rear differentials
Years ago there was a Visible V8 model that had a starter that consisted of a can motor that turned a sun gear that meshed with 2 planet gears. The planet gears meshed with 2 internal gears with different tooth counts. One internal gear was stationary and the other one was connected to the starter pinion. The starter pinion meshed with the engine flywheel.
He started explaining, and I couldn’t understand why he had such a hard time understanding it in school lol. It was so simple.
That's the best explanation I've seen so far. Took a good deal of effort to setup.
For years I have wondered how robots with compact reduction gear assemblies were able to work without backlash. I had always assumed there was a sun gear assembly inside, so it never occurred to me it was a "harmonic drive", which I heard of but didn't grasp the meaning. I learned so much today and it was awesome. Thank you very much, I needed that! :)
goes from stories and anecdotes about harmonic drives to explaining them at 2:00
Super great explanation. One would think that the flex spline gear would fatigue over a short time, but they're so widely used in so many applications that it must not be an issue. Thanks for the great video demonstration!
Man i wish i had a teacher like this guy, school woulda been great
Great explanation. Now I understand the mechanics behind my new telescope mount drive. Very impressive!
Best explanation I've ever seen!
Shared this video to my robotics class. Far and away the best video explaining how these drives work from the 5 I watched before this.
I have never even heard of these mechanisms before but I'm super glad I stumbled on this video. That was fascinating!
This is a great explanation - well done!
Excellent demonstration! Thank you so much!
Brilliant explanation, thank you for the clarity! This concept is really flexible (pun intended!)
Excellent, thanks for taking the time to make this!
I understand it immediately after your demo with those straight gear. Very clear explaination.
This is the clearest demonstration and explanation I've seen in a long time. Thank-you.
Terrific illustration. Thanks for posting the video.
Hands down ...the best video I have seen on harmonic drive.
In the '70s, as a 12 year old, I had a Visible Wankel Rotary Engine model which was driven by a planetary gear harmonic drive. I always assumed that this was how it worked, I was never sure until I saw this.
Amazing gears.
Thank you very much for the clear explanation.
We use these drives in our surgical robots. Love the clear explanation and linear props to illustrate the basic physics. Thank you.
WOW What an amazing explanation. Thank you so much.
Best explanation ever, thank you !
Such an amazing demonstration!
I appreciate the effort you put on to explain. Well done!
man this was a perfect explination, very good job! amazing drive motor design... the minds that come up with these things
This was fascinating. I've seen it explained a dozen or so times but this is the first time I've actually understood it.
Thank you!
Many thanks for the demo and nice explanation.
It looks like a perfect job for a wire EDM machine. Great explanation. Thank you.
I've read how this drive works multiple times but never were able to visualize how it works. It was a mystery to me up to now. Great teacher!
Beautiful simple explanation.
Thank you! Wonderful demostration!
The explanation is so clear and fantastic, thank you!
I appreciate the clear explanation and effort of building the demo rigs.
Very nicely explained.
Great presentation!
Thank you! Wonderful explanation
This is an amazing explanation. Thanks.
This is the best explanation of this mechanism I've ever seen. Thank you!
You explain extremely well!
And your pronunciation is so clear. Cheers mate!
thank you for this awesome explanation and demonstration
Great explanation. Thank you for the video.
Brilliant teaching, well done!
Thank you so much for this video, very well done!
Thank you for an awesome explanation.
Awesome Demonstration, you wrapped up the idea in a beautiful simple was with many tools
The best explanation of this drive. Point!
Greetings from Munich, Tom.
Excellent explanation, thank you very much!
Excellent explanations !!!
Great model and explanation.
Clear explaination and great video. Thank you
Great explanation! Thank you!
Awesome lesson, many thanks 👏👏👏
I had a great “Ah Ha” moment about 6 or 7 minutes into the video. I’m a now retired electronics technician who used to work in the production of printed newspapers. Equipment from a company called Ferag used harmonic drives and when we were trained on it the instructor told us what it did but couldn’t explain how it did it. To him it was a magical engineering marvel. In the years that followed we repaired them quite frequently. Usually the Flex Ring would crack and we disassemble the unit and replace it. I had a fair understanding of how it worked after working on them but you, my friend, brought it all together. I’m going to forward your video to my former coworkers who still have to deal with it. I’m sure they’ll appreciate it. Thank you.
Thank you very much for the clear explanation! Love your videos
This is the most amazing and useful video i have seen in a long time. Thank you for explaining this. I was really struggling to understand exactly how it works. You are an awesome teacher.
This video is incredibly well presented.
Very well demonstrated. Thank you
Such a beautiful explanation..
Love it!!! I need to make some of these but specialized use.
Great demo!
This is an excellent video . I was having serious difficulty understanding this drive and
your explanation brought it all together for me. I commend this instructor profusely.
Thanks for the explanation. When I took aircraft maintenance our instructor had us make our own vernier scale using two pieces of paper with marks on their edges. It opened our eyes to the concept of a vernier scale. Later we had to manipulate a vernier coupling to change timing which was very simple for us. This differential of gear teeth I instantly understood from that course I took over fifty years ago.
Amazing explanation!!!!
Really well done!
Thanks for the informative video! I didn't know I was curious about Harmonic Drives until I started watching your video. 8)
Excellent explanation.
Awesome explanation. Nothing to say other than many thanks !
Zero backlash & fixed timing... 2 great attributes for a gearbox... 🤨 a lot of people don't realise just how important backlash , or rather lack of it , is.. anyone with a milling machine who trys climb-cutting better have NO backlash in their table feed... 😰
Great description, the use of the straight racks initially helped greatly to understand the theory behind these rather exotic & quite expensive units... 🤗
😎👍☘🍺
When you say, "fixed timing" do you mean the input side is directly proportional to the output side? I saw cyclonial might have a problem in this regard ( because the input side to output side is not strictly linear because each teeth engaging is not directly proportional?)
Fabulous demo and lecture. Liked and Subscribed.
Great video, man.
Best explanation and drive model ever!
thx for this very brief explanation. it gives me clear direction where i hv to go for my arm. thx alot :)
I can't thank enough to the person explaining very beautifully the concept of harmonic drive so good video ❤️❤️ love it it just instantly clicked in my mind how the mechanism works after seeing the demonstration
Been wondering how that works for a while. Thanks for making the video and explaining it
Thank you for sharing
Outstanding it is Crystal clear now
excellent explanation. thank you
thanks for share your knowledge..
Thank you. I learned something new today.
Wow you have explained it so well, the best, the best sir
Fantastic dude !
I have heard of this but had never had an explanation. You provided a very good explanation.
You are a great teacher, thank you.
Your explanation was very easy to understand. Thank you
Great video! Thanks!
This guy is a great explainer. Thanks for the video.
Great job in explaining this
Sir, you are a life saver.
great explanation！！ clear and clever！ thanks a lot for the amazing video
Fantastic, thank you!
You Sir defogged my mind in 12 minutes on harmonic drives, THANK YOU.
Great teaching! I have learnt a lot. Thank you.
Best harmonic drive mechanical explanation I've seen (out of at least a dozen I've come across)
Very, very good lesson!
Amazingly educational, I 100% get it now
Glad to see you up and running again. Be well.
that was interesting. never heard of a harmonic drive but could see how durable and long lasting it could be. thanks for the info!
Fasting drive and very clear explanation thank you!
Well done, even I could understand. Thanks!
Interesting.
Thank you