Re: [CAD_CAM_EDM_DRO] Re: Hexapod question

Ball-joints *will* work, if you make each strut end a half-ball that mates
with it's partner, to form a (rather) full sphere. Properly made, they
will only rotate in one axis with respect to each other. Then, you need no
splines, since the one-axis-of-freedom constraint obviates the need for
'em. The ball joint, thus formed will allow the other degrees of freedom
required by the system. The actuator or motor will have to operate
co-linearly with the struts.

RayHex

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> From: afaIII <afa_mma@...>
>
> Ball joints will work, but only if you spline the strut pieces to each
> other so they can extend but not rotate relative to one another.

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