![]() I can't believe that thread got no replies. I was ultimately looking to do something like this: I suspect though, that PVC or acetal might just do for what my usage will be. At $40 a kg the bronze stuff is not cheap. Especially as you can build spokes onto the larger gears and save $$ on printing material. I was kind of hoping not to be (very) lazy (as usual) and not have to worry about sizes of addendums etc but that is a good tip. I was looking at that site yesterday - what an amazing bit of software. generate 2 gears together with a target center distance) and generating gears at arbitrary angles to each other.Your rebuild is looking good. Some other things I'm considering is support for offset compensated gears (e.g. I'd like to persist user inputs between launches of the add-in, add double helix gear generation (it's easy enough to do by simply mirroring a single helix gear but still worth adding), maybe add tooth fillet/chamfer options, maybe add some features to make 3D printing of gears easier (e.g. Gears are more than triangles - doubly true for helical gears. Come to find out projecting a line onto a cylinder in Fusion360 is not how one makes a helix. Generating a Helix required more attention than I expected. And this technical reference from about various types of gears was truly invaluable. ![]() Supports specifying gears in either the 'Normal' or the 'Radial' system. This add-in can also be used to create screw gear down to a single tooth. ![]() Helical gears can be meshed in parallel or crossed orientations. Since the gear is curved, this angling makes the tooth shape a segment of a helix. The leading edges of the teeth are not parallel to the axis of rotation, but are set at an angle. What it doesįrom Wikipedia: Helical or "dry fixed" gears offer a refinement over spur gears. I needed a way to create gears with backlash so I began by modifying the SpurGear script that ships with Fusion360 and allong the way I learned about helical gears and thought they'd be a better fit for my project than simple spur gears. ![]() I'm working on a project that needs some 3D printed gears. ![]()
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March 2023
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