Fidget Spinner
CAD Design and 3D Printing
The first step was designing the 3 components that made up this product- the body, and the two caps. These were designed to be manufactured with a 3D printer
I had to be careful with the tolerances, and used GD&T to ensure the bearings fit into the slots. The caps needed some trial and error as they were mated with a press fit.
This project was part of an Introduction to Engineering Graphics and Design class at UT. We were tasked with the design, manufacture, and structural analysis of a fidget spinner.
Injection Molding
To be exposed to more manufacturing methods, we also the main body of our fidget spinner to have a more solid body
In order to do this, we designed a mold that could be made through a CNC and then used to injection mold. Unfortunately, due to the restraints of the CNC machine, this design could not be made due to the some of the thinner walls being too thin for the end mills. We ended up using a different mold for our final project.
FEA Analysis
To test the stress and deformation of the spinner, FEA analyses were performed via a drop test. These results showed the areas of high stress, and the areas of maximum displacement at the point of contact. Overall, the stress and deformation was within the material limits and ensured the assembly would not break.
Assembly and Final Product
Although the initial design was not able to be completely made into the final product, we were still able to manufacture the fidget spinner.
