Customisable Omni-wheel

thingiverse

This is the code for a completely customizable omni-wheel in OpenSCAD. It lets users pick wheel radius, subwheel size, how many subwheels are created, what axis is used for the wheel and subwheels, frame thickness or connector thickness - basically any key value!! Print Settings Rafts: No Supports: No Resolution: 0.15mm Infill: 20% Notes: The resolution can be chosen freely; however, smaller size is preferred for the main wheel piece while higher layer heights should be used for the subwheels. Use "generate" to choose between the main frame (1), which requires two pieces, and a subwheel (2), of which as many should be created as set in "num". Post-Printing Assembling the Subwheels! Once all required pieces have been created (two times the main frame for the wheel and however many subwheels you specified) you should then proceed to assembling the omniwheel. This is a rather straightforward process: Simply place the subwheels in the correct positions (which can be seen in OpenSCAD Preview when having "generate" set to 1) and push what was chosen as axis through the connectors. A 1.75mm filament serves this purpose very well, and is recommended for use because it's small, inexpensive, and allows smooth rotation. If the connectors on the omniwheel break on the outside weak piece (which will likely be rather small), there's no need to worry! Simply glue the filament to the connector and everything should stay in place. As you do this it's also a good idea to use a bit of lubricant to allow smooth wheel movement, though this is optional. Assembling the Main Wheel! Once all subwheels are in place, simply take the two main pieces and push them together in such a way that the teeth fit together. With a bit of force the pieces should slide together and connect firmly. A bit of glue can also be used to fix the pieces together.