I'm working on a prototype that would call for actuated curvilinear motion along an arc. One method I've seen before is to use a curved gear rack and an arc rail (see image). Anyone know any off-the-shelf suppliers of curved gear racks or have a better method in mind...
I had a surgeon I work with ask me if I could give him the mechanical details behind how surgical compression screws for bone work (ie http://www.acumed.net/acutrak-2-mini).
Now the main features of these types of screws are:
- Variable pitch; screw tip has a coarse thread while the head has a...
