RE: [CAD_CAM_EDM_DRO] Re: Open (i think) design for a parallel robot (reprap may be interested)

HI Graham,

*I* looked at your site! I've been back a few times, for that matter. I
like the Hexel platform, and would love to make a working model of it. Not
sure if I could work out ALL the kinematics, but it would be a good
exercise. What is the stuff that looks like links (copper colored) down ON
the table?

Alan KM6VV
P.S. It's OK to talk to yourself; it's when you start ANSERING yourself
that you want to worry about!

<SNIP>

> I sometimes wonder if I am talking to myself. I have posted a link to
> my kinematics page at least twice. You don't need matrix maths you
> can calculate the lengths or base positions directly using pythagorus.
> For example if you take a triaglide, you know the position you want
> the table to be in, the points on the rail where the carriage should
> be are given by the intersection of a sphere with a line. i.e. the
> possible positions of the struts other end with the rail. You will
> get two solutions but you can ignore one. Also if you keep the
> equation in its most general form you can account for rails not being
> parallel etc.
>
> <SNIP>
> Bottom line, I think triaglides and deltas have real homebrew
> possibilities, I've done the ground work, please run with it. BUT
> hexapods specifically don't fit the bill for reprap or most homebrew.
>
> Cheers,
>
> Graham
>
> www.indoor.flyer.co.uk/kinematics.htm
>