Yea, being on the other side of the planet from McMaster Carr has got to suck...
As for using feedscrews to drive the arms that adds another part to the position
calculation as the amount of rotation changes with the angles as well as the
amount of force required to do said work.
Keep us posted
Hi All
Thanks for all the informative replies. I'll pursue the references.
Sounds like it's doable, but the time/effort spent on software development
will exceed the material savings. Unless of course, a few thousand were to
be made.
I would not use gears to drive the arms, but feedscrews,
On Wednesday 05 December 2007, Anders Wallin wrote:
John Thornton wrote:
Yea, being on the other side of the planet from McMaster Carr has got to
suck...
It gets worse. McMaster Carr will currently not sell anything to non-US
customers. I tried ordering something a while ago and back came a
I like the idea of rotary joints to eliminate linear bearings. But you are
now forced into a complicated drive mechanisim
at each rotary joint.
It's hard to beat lead screws for simplicity.-
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On Wed, 5 Dec 2007, Roland Jollivet wrote:
I would not use gears to drive the arms, but feedscrews, forming a triangle,
much like a mechanical shovel. I did not draw that all in as it was getting
real late.
once you start making triangles out of feedscrews, the madness sets in...
