On Wed, 1 Apr 2020 at 04:07, andrew beck <andrewbeck0...@gmail.com> wrote:
I have narrowed it down to either harmonic drives or Hypocycloidal gear > boxes. The FHA-25B harmonic drives are almost the perfect starting point as they already contain a matched servo motor and very fancy cross-roller ring bearing. Specs here https://www.harmonicdrive.net/products/rotary-actuators/hollow-shaft-actuators/fha-c But for easy retrofit use you want the -B version which has standard Hall sensors and incremental encoder. There is a relatively affordable on on eBay here: https://www.ebay.co.uk/itm/153882616939 I used one to make my 4th axis: http://bodgesoc.blogspot.com/2017/05/harmonic.html Prior to that I had designed (possibly invented, I am not sure) this easy-to-manufacture take on the cycloidal drive. https://www.youtube.com/watch?v=VrvwlPxRhKU -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
