Quastion about parallel robot with rolling pairs

AI Thread Summary
The discussion centers on the application of parallel robots utilizing rolling pairs, specifically spheres rolling on fixed spheres. The initial inquiry seeks to understand the practical uses of such a robotic structure. Responses clarify that this concept resembles a mouse ball mechanism, where drive motors create motion through friction. There is mention of the need for stability, often requiring multiple spheres or additional stabilizing components. The conversation highlights a gap in expertise regarding advanced applications of these higher pair systems.
hmoein
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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
 
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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.
 
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
 
Hmmm... I'm afraid that you'll have to wait for someone else to respond. This is out of my league.
 
do u mean ball and socket joint?
 

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