Subject:
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Re: Excavator Pics
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 21 Feb 2002 14:21:51 GMT
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Viewed:
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4043 times
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In lugnet.technic, William Howard writes:
> Whoosh! The sound of that going completely over my head. What on earth is
> a kinematic singularity? I'm a computer scientist not an engineer (took a
> wrong turning at City Uni and ended up in the Comp block and not the Eng
> block I think!)
Hi all,
It's my first post to the group so by way of an introduction I suppose,
there are a few pictures at www.brickshelf.com/cgi-bin/gallery.cgi?m=techgrl .
Jennifer, correct me if I'm wrong, but isn't a kinematic singularity a point
in the motion of a mechanism whereby the direction of the applied force is
exactly opposed by the final positions of the indirectly connected
components? In other words, you get to a point where everything lines up
just right and the thing locks up. A bit like trying to run a one-cylinder
engine without inertia?
William, that's some very nice MLCAD work.
Becky
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Message has 2 Replies:
 | | RE: Excavator Pics
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| (...) point (...) one-cylinder (...) I actually understood that - thanks! The real reason for the redesign of the boom/bucket linkage on the excavator is that I've used a different bucket and the attachment points have a different geometry. But, (...) (23 years ago, 21-Feb-02, to lugnet.technic)
| | | Re: Excavator Pics
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| "Rebecca Taylor" <arellcat@NOSPAMyahoo.com> wrote (...) www.brickshelf.com/c...?m=techgrl . The modifications to the JCB are very interesting, especially making the boom offset. (...) point (...) one-cylinder (...) Well as it happens that, like (...) (23 years ago, 21-Feb-02, to lugnet.technic)
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Message is in Reply To:
| | RE: Excavator Pics
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| (...) I think it actually took longer to ldraw the excavator than to build it - but I had fun in the process so who cares. I also had to dismantle most of it in the process so I effectively built it twice. The excavator started with the boom, then (...) (23 years ago, 20-Feb-02, to lugnet.technic)
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