I've seen both harmonic gearboxes and that Galaxie put into robotic applications. The Galaxie is super strong, high torque, and has very good stiffness from input to output, which is critical in some (medical) robotic applications. The max output speed is probably lower than the harmonic drive, but the gearing ratios for both the galaxie and harmonic gearboxes is quite high.
The galaxie's are really expensive. The average LCNC'er would freak out at the price and not go w/ it. But, it would make a great 4th axis if you could get your hands on one. The factory is in Germany, so maybe stop by and help them load a truck :-) Mark On Fri, Aug 27, 2021 at 1:20 AM John Dammeyer <jo...@autoartisans.com> wrote: > Perhaps these are over designed for a lot of projects? > > From what I understand robots and even the Canadarm on the ISS use the > harmonic drives for the joints. > > Suppose I wanted to build a duplicate of this with slightly longer arms. > https://en.wikipedia.org/wiki/Armatron > > I have one of these still in the original box and have played with it for > hours. And then decades later my boys played with it. > > The TT Holders I use don't all have the slot like the original Tormach > units. In fact 5 of the Tormach originals don't have the slots either. > When I use my hand to catch the tool and place it in a rack I envision a > robot arm doing much the same thing. In fact the same arm could > theoretically serve a dual purpose and also place raw material and remove > finished product. > > So 4 rotating joints and a gripper. Since it's not a rotary table under > constant turning and precision is relative would 3D printed harmonic drives > work for the joints? Or do they wear too fast. They don't need to be > large and don't require tons of load capabilities. After all a TT Holder > with a 1/4" chuck and #27 drill bit isn't that heavy. > > In fact I could probably pull the parts out of the collet with the > Armatron. > > John > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
