• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

To Everything There Is a Season

 
Sheriff
Posts: 67746
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
author
Posts: 9050
21
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Nice!

What's the technology behind the graphics?
 
Master Rancher
Posts: 4806
72
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Nice Rzeppa!
 
Bear Bibeault
Sheriff
Posts: 67746
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Bert Bates wrote:What's the technology behind the graphics?



Haven't a clue!

I just love simple machines like this and came across this image on the net. It was too cool not to share!
 
Mike Simmons
Master Rancher
Posts: 4806
72
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Wikipedia doesn't say either. But you could send a message to User:Pwld and ask.
 
Bear Bibeault
Sheriff
Posts: 67746
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Ah, thanks for the attribution, Mike. I found the animation on this page, which has a few other interesting animations.
 
Mike Simmons
Master Rancher
Posts: 4806
72
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Oooh - that's a cool collection. Thanks!

I found the attribution by wiki-ing "universal joint" (a similar concept) and following the link to Constant-velocity joint. Along the way I also saw this nifty graphic:


 
Rancher
Posts: 1337
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

What's the technology behind the graphics?


Possibly POV-Ray
 
Rancher
Posts: 4803
7
Mac OS X VI Editor Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Mike Simmons wrote:"universal joint" ... Constant-velocity joint



Similar, but the CV joint is far more interesting. A standard homework question in Kinematics class is:

Assume that the input shaft is fed a constant RPM, graph the relative speed of the output shaft.

Then graph the relative speed function as a function of the angle between the input and output shafts.
 
Trailboss
Posts: 23778
IntelliJ IDE Firefox Browser Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Wouldn't the little balls fall out?
 
Mike Simmons
Master Rancher
Posts: 4806
72
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Apparently not, as we have these things in most of our cars, and most of the time, nothing falls out of them. The image Bear found is simplified, removing material to give us a clearer view of the moving parts. An actual Rzeppa CV joint looks more like this (from the link I previously gave):

 
Pat Farrell
Rancher
Posts: 4803
7
Mac OS X VI Editor Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

paul wheaton wrote:Wouldn't the little balls fall out?


No, they are kept in with the magic grease. And if the magic grease goes away, or gets dirty, its really expensive to replace. Have you checked what getting you car's CV joints replaced costs these days?
 
Ranch Hand
Posts: 276
Netbeans IDE Chrome Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

paul wheaton wrote:Wouldn't the little balls fall out?


It wont..actually there will be partially hemispherical grooves(like sockets) in both the inner & outer, with some little tolerance that the small balls can rotate freely but not fall off(like a prison/cage).
..and of course there would be grease not for holding the balls at places, but for lubrication - without lub the hemispheres/little balls may get worn out soon due to excessive rotational friction.
Hope I'm not going in too technical.

Have you ever wondered how we sit static in a car/a bike while the base is rotating? You are actually sitting over rolling tyres. Can anyone place an object over a rolling object? Will it stay there? Bearings(is what we call) makes it possible. It makes one part(tyres) roll relative to another part(the chassis). Bearings use almost the very same principle.

Believe me...I've got a Bachelor in Mech!
 
reply
    Bookmark Topic Watch Topic
  • New Topic