On Thu, Mar 1, 2018 at 10:56 AM, jeremy youngs <jcyoung...@gmail.com> wrote: > Chris, what software are you using to generate gcode?
I download the STEP file from either Boston Gear or McMaster Carr or some place like that can then import in into Fusion 360. The import is "perfect" in that I get a model made of curved surfaces without "facets" so the model can be scaled with no loss of precision. So it is important to choose the "correct" format to download. There are quite a few options One you import the model you almost certainly have to make changes. The bore size of the hub is likely not to be what you want. So first step is to make the gear exactly as you would like it, including the hub and even the size and thread pitch of the set screws. Then there are two ways to make g-code: 1) If you are going to print the gear in plastic then Fusion has an option to save the "body" as an STL file. I set the allied error in the STL to well less than 0.01mm. Then the STL file is moved to "Cura" for slicing. In Cura I set it up so the gear teeth get made with 100% density (solid plastic) and the core to 50% density. The hub needs to be 100% too. Layer hight at 0.1mm It is a waste of materials and TIME to make a 100% solid gear. Cura will produce g-code for the printer. 2) if you want to cut the gear in metal, Fusion 360 can do this itself. Although it does not know about speacilzed gear cutters and will do it with a ball end mill and a 4th axis. But this is about the only way to make a helical gear in metal -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
