On the VRDLCJ image there, are the main arcs circular?
Also, I'm curious how you'd drive this. A line across the tip (as Guizmo draws) would let you extend the arm, but how would you contract it? A closed belt comes to mind, but I'm having a hard time identifying a fixed perimeter path for the belt. Perhaps a well placed evolute to keep tension as the joint rolls?
Also, I'm curious how you'd drive this. A line across the tip (as Guizmo draws) would let you extend the arm, but how would you contract it? A closed belt comes to mind, but I'm having a hard time identifying a fixed perimeter path for the belt. Perhaps a well placed evolute to keep tension as the joint rolls?