Quastion about parallel robot with rolling pairs

[hmoein]

hi
are every one know about parallel robot with rolling pairs for example one sphere rolling pn the fixed sphere.
my quastion is the application of this structure.
tnx
hossein

 

[Danger]

Hi, Hossein.
I anticipate some language difficulties here. Are you referring to a ball used instead of wheels for robotic movement? If so, such is set up much like a mouse ball for a computer. The drive motors run rollers or wheels which impart motion to the ball through friction. In cases with intense dedicated balance circuitry, one ball is enough. It is more practical in most cases, however, to have a stable structure with 3 or more balls, or with a drive ball and stabilizer wheels.

 

[hmoein]

hi
thanks for your answer.
no i search about parallel robot with higher pairs infact. the contac surfaces are sphere and rolling on each other

 

[Danger]

Hmmm... I'm afraid that you'll have to wait for someone else to respond. This is out of my league.

 

[chingkui]

do u mean ball and socket joint?