Make it in metal, truncate the teeth to have a larger bearing area. Pack it
with the grease used in front drive car axle joints. Wrap it in a flexible boot
with a rotary bushing and shaft seal around the rod connected to the sphere.
There you have a hip or shoulder joint for robots, with no need to have long
actuators or cables on the arm itself.
On Friday, June 25, 2021, 1:10:39 PM MDT, Chris Albertson
<albertson.ch...@gmail.com> wrote:
A new kind of 3-dof spherical drive. This would work well for holding
parts in a mill. It would allow 6-axis work on any standard 3-axis
machine. The device would be easy to 3D print but very hard to make
precise.
What if the ball were 6" in diameter and made of hard steel?
https://youtu.be/AHUv9Zda_48
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