Invention of C. Walton Musser in mid 50's. Munufactured in Peabody Mass., Germany and Japan. After all these years, still state of the art. Used by NASA, defense department, robotics, medical equipment, plus many other applications. All three plants have recently expanded because of demand. Inventor had over 250 patents.
Was used in the hub motors as a reduction gear on the lunar rovers on the moon almost 50 years ago! Still sat on the moon if anybody wants a few free units.
I guess im randomly asking but does anybody know a trick to log back into an Instagram account? I was stupid forgot my account password. I would appreciate any help you can offer me
@Merrick Yusuf I really appreciate your reply. I found the site through google and im waiting for the hacking stuff now. Looks like it's gonna take a while so I will get back to you later with my results.
Torsionally stiff yet radially compliant... hmmm... How much energy is lost in flexion of the flexhub? It is conceivably a spring. Possibly that helps. What about metal fatigue?
I doubt metal fatigue is an issue here - if it's made out of steel with a cubic room centered grit you can find a max stress where you will have an infinite amount of cycles as long as you don't go over that stress level... If its a metal with a cubic surface centered grit it's a little harder cuz those metals will break at some point but even there you can pretty reliably find a stress level with which you can reach a couple billion cycles (that would be with aluminum and certain non-rust steels like V2A for example) Ps: some translations might be a bit rough due to me not knowing the proper technical terms in English but I hope it gets the point across.
Hi, I want to create a mechanical animation like this and I've already designed the components by SOLIDWORKS. Could you please tell by which software I can create the animation? Thanks
C. Walton Musser, google and you will be amazed what all he was credited with inventing. Including WWII recoilless rifle, ejector seat, strain wave gearing.
It's been "working" since the 1950's. I have had a number of engineers tell me Mr. Musser was a genius. During his lifetime he was approached about writing a book about his inventions. He refused, telling the writers he had no desire to become famous. Plus, much of his work is still classified by the government.
It still has an outer ring gear and an inner compliant gear. Any clearance between the mating gear teeth will lead to backlash. This can occur through wear and tear from daily use; not just manufacturing tolerances. You can't state with absolute certainty that backlash is zero in practice. It might just be small enough to ignore .
Does anyone else find it odd that this beautifully designed graphic does not actually show the output turning? It literally shows the input drive spinning inside a stationary ring. To truly demonstrate this mechanism the output should be turning at the correct ratio to the input.
@@HarmonicDriveLLC It absolutely does not move, pause the video at 1:23, cover up any 3/4 portion of the device with a sheet of paper, and focus on the outer ring while bouncing the video back and forth using the arrow keys (while still paused). There is NO rotational change, at least none that I can see. This goes for al your demo video I've so far seen (3 or so).
Invention of C. Walton Musser in mid 50's. Munufactured in Peabody Mass., Germany and Japan. After all these years, still state of the art. Used by NASA, defense department, robotics, medical equipment, plus many other applications. All three plants have recently expanded because of demand. Inventor had over 250 patents.
Update: No longer headquartered in Peabody Mass. The new Headquarters is about 10 minutes away in Beverly Mass.
Was used in the hub motors as a reduction gear on the lunar rovers on the moon almost 50 years ago! Still sat on the moon if anybody wants a few free units.
I guess im randomly asking but does anybody know a trick to log back into an Instagram account?
I was stupid forgot my account password. I would appreciate any help you can offer me
@Markus Cason instablaster :)
@Merrick Yusuf I really appreciate your reply. I found the site through google and im waiting for the hacking stuff now.
Looks like it's gonna take a while so I will get back to you later with my results.
@Merrick Yusuf It did the trick and I finally got access to my account again. I'm so happy:D
Thanks so much, you really help me out :D
@Markus Cason no problem xD
Used in FANUC robotic arms for example.
Torsionally stiff yet radially compliant... hmmm...
How much energy is lost in flexion of the flexhub? It is conceivably a spring. Possibly that helps. What about metal fatigue?
I doubt metal fatigue is an issue here - if it's made out of steel with a cubic room centered grit you can find a max stress where you will have an infinite amount of cycles as long as you don't go over that stress level... If its a metal with a cubic surface centered grit it's a little harder cuz those metals will break at some point but even there you can pretty reliably find a stress level with which you can reach a couple billion cycles (that would be with aluminum and certain non-rust steels like V2A for example)
Ps: some translations might be a bit rough due to me not knowing the proper technical terms in English but I hope it gets the point across.
@@Averell64 I guess you mean Endurance Strength. That is standard for high cycle fatigue applications?
Hi, I want to create a mechanical animation like this and I've already designed the components by SOLIDWORKS. Could you please tell by which software I can create the animation? Thanks
Blender.
is there a reverse version of this? instead of gear reduction, multiplier version of this?
It should be quite simple. Connect the stepper motor to a circular spline instead of a wave generator.
@@macksoneh can not be back driven
@@alainspecteur1: See page 2 of www.harmonicdrive.net/_hd/content/LegacyLit/PSAG.pdf. They seem to think it can be backdriven.
@@macksonehusually these aren't used with steppers though
bizarre design. pretty interesting
Can I work for this company?
No
hey, @argentknight7557, we fired@@BrotherCreamy, u can work 4 us now
Doesn't all that flexing damage the central component by constantly stressing it metallurgically?
No
but does it have infinite life? guessing cycles limited to
nothing has infinite life
Must be made from very good steel to be constantly flexed. I would think eventually it would stress crack. ??
with some steels, if you stay under its plastic deformation flex, theoretical expected cycles are infinite.
What is the reduction of harmonic drive
the single-stage reduction ratios for harmonic gears range from 50:1 to 320:1
this is cool and all but tone it down on the music, you didn't solve world hunger
what is the song in this video?
I guess you’ll never know
@@KodiakTeddy I found something similar or perhaps better. Dexter Britain - The time to Run (finale).
"Unnecessary Bullshit No. 1"
I want to duy flexspline
HFUC 25-50
H F U C 25-50
Who the hell comes up with such ingenious ideas?
Hi. Musser did.
en.wikipedia.org/wiki/Walton_Musser
Batman.
C. Walton Musser, google and you will be amazed what all he was credited with inventing. Including WWII recoilless rifle, ejector seat, strain wave gearing.
I cant believe this bearing actually works.
I can't believe that bearing exists... It's cursed...
It's not a bearing.
@@Jeremy.Bearemy What is it then?
@@londonnight937 a reduction gearing
It's been "working" since the 1950's. I have had a number of engineers tell me Mr. Musser was a genius. During his lifetime he was approached about writing a book about his inventions. He refused, telling the writers he had no desire to become famous. Plus, much of his work is still classified by the government.
Where is the proof it has 0 backlash?
Pretty much inside every industrial robot on the planet that use this design, plus every satellite in orbit that reorients its solar panels.
you can model it yourself, use some physics insights. Also the extensive use around the world for this exact property may serve as empirical evidence.
It still has an outer ring gear and an inner compliant gear. Any clearance between the mating gear teeth will lead to backlash. This can occur through wear and tear from daily use; not just manufacturing tolerances. You can't state with absolute certainty that backlash is zero in practice. It might just be small enough to ignore .
Does anyone else find it odd that this beautifully designed graphic does not actually show the output turning? It literally shows the input drive spinning inside a stationary ring. To truly demonstrate this mechanism the output should be turning at the correct ratio to the input.
If you look carefully, you should be able to see that the flexspline is turning very slowly (due to the high ratio)
@@HarmonicDriveLLC It absolutely does not move, pause the video at 1:23, cover up any 3/4 portion of the device with a sheet of paper, and focus on the outer ring while bouncing the video back and forth using the arrow keys (while still paused). There is NO rotational change, at least none that I can see. This goes for al your demo video I've so far seen (3 or so).
@@timmarrier The outer ring is not the output in this demo. The flexspline is the output, and it's visibly turning.
@@timmarrier I'm not an engineer, just a layman, and I understand it. Why can't you? Wreck your motorcycle while not wearing a helmet?
@@timmarrier You clearly don't even understand what you are looking at. As others have explained, the flexspine IS the output. It is rotating.
Fewer
Cool, I'm building a 2 legged walking robot on my channel check it out and tell me what you think thanks.