Society of Robots - Robot Forum
Mechanics and Construction => Mechanics and Construction => Topic started by: Soeren on December 07, 2008, 12:44:14 PM
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Hi,
A Christmas present for those who are ready to build this gripper from the ground up.
http://that.homepage.dk/PDF/SCT_01.pdf (http://that.homepage.dk/PDF/SCT_01.pdf)
Not quite complete as is, but I'll leeave the rest as an exercise for you for now.
If you have any questions, I can be reached at Spambox(at)im26y(dot)com for the fastest reply (which may be fast or not, depending on how busy other stuff keeps me :)).
Merry Whatever.
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If you get the tolerances neccessary, it should work well. You otherwise might have a slightly tricky time getting the thing onto the caps. Granted, the small fillet on a standard cap might mitigate that problem.
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Interesting idea, although I'm a bit concerned the blue things might get in the way during insertion.
Also, I think it'll work with just two of those blue things, making these things simpler to make . . .
-Admin, the mechE critic ;D
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Hi,
I should mention that it was my first go with Google SketchUp (quite a lousy proggy for serious work I think) and since it was only ment to spark off some idea for those in need of such a gizmo, I didn't waste too much time getting the proportions right.
The "hole" is supposed to be some 5 to 8 mm (or more) larger in diameter than the cap, so it will fit a small range of cap diameters.
The "blue things" (the grippers) is shown with just a small part outside the ring shape, but this can be adjusted to the exact measures you want and it should probably have been shown a little concave as the other side (only I didn't want to spend more time on SketchUp). they might need a small "centering" spring between the two halves to keep the Blue Things from blocking the "loading".
I think it will be a challenge to do it with only two "blue things", since it wouldn't center the cap properly for a good grip.
Ment as a starting point for those wanting to experiment, as I have no time for making it right away (although I know it will work when I make it, since it is so simple).
As mentioned, it will need 3 little pieces of piano wire to keep the cap and perhaps an eject mechanism (a rod through a center hole should do), if you want to lose the cap instead of replacing it on the bottle.