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wall-e arm movement

Planning to build a Wall-e and thinking through some of the mechanisms.

Haven't come up with a good way to get the arms, at the shoulder points, to move forward and down.

Pic:

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That dark band you see from top left to bottom right is supposed to be the exterior track. In the pic it continues towards the bottom left to get a U shape but I'd be happy enough to handle just the L.

Thought about variations with racks/pinions and such but my best idea so far would be something like a side mounted gantry inside the box. And prolly need one for each side.

Somehow this seems like overkill.

Any other ideas?

Tanks, DOC

Have robots. Will travel.

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doc
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Simple, Powerful, Tested!

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--Winston

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Winston

Wall-e by any other name. :-)

In this case they call it an HT-50. And the right color scheme to boot.

But the shoulder pivot points are fixed. And for that matter it's the same for the animatronic mock ups that I have seen. Just sometimes the arms come out of the body at different points.

Seems like a challenging idea to be able to vary this dynamically.

Tanks, DOC

Reply to
doc

On Fri, 11 Jul 2008 03:42:03 GMT, with neither quill nor qualm, Winston quickly quoth:

Yeah, that's even better than a base D-9.

---------------------------------- VIRTUE...is its own punishment ==================================

Reply to
Larry Jaques

All the hard stuff is done. Just rip out the manual controls and substitute servo hydraulic valves. What more could one want? :)

Yup! I ain't no physics maven but it strikes me that shoulder joint is the pathway for *a lot* of force. So it's best kept rigidly pinned to the chassis.

--Winston

Reply to
Winston

Better gas mileage, anyway!

--Winston

Reply to
Winston

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