A good trick for designing gears is to find a supplier of standard gears. Boston Gear is one and McMaster-Carr is another. Then you see on their web site they have CAD files for the gear. Just download the file. Then you can modify the hub or make thew face wider. Just about any kind of part os available on-line.
I use Fusion360. It can import and export just about any kind of CAD file. On Wed, Apr 1, 2020 at 12:39 AM andrew beck <[email protected]> wrote: > frank how do you design them? eg do you generate the gear > mathematically and what cad software do you use? > > regards > > Andrew > > On Wed, Apr 1, 2020 at 8:19 PM Frank Tkalcevic < > [email protected]> > wrote: > > > > https://www.youtube.com/watch?v=Eds48L4cJjM > > > > In those designs, I've always been concerned that the moving part of the > > gear rubs against the outside lobes. This repair video shows a Sumitomo > > Cyclo which uses rolling pins on the outside, so minimal friction... > > > > https://youtu.be/H_oMVO_OTGs?t=157 > > > > (There's another video out there that shows an exploded view of this, > but I > > couldn't find it). > > > > I used this idea for some 3d printed hypocycloidal gearboxes for a robot > > arm, using bearings for the outside pins. It works, but the plastic is a > > bit squishy - on the TODO list is to cnc machine them out of aluminium, > > which shouldn't be hard as they are 2 1/2D parts. > > > > > > > > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
