POWER UP

Feb 2014 – May 2014     

 CAD drawings of the full Power Up yoyo assembly.

CAD drawings of the full Power Up yoyo assembly.

 
 

I designed the Power Up Yoyo

with five other team members as part of a manufacturing class at MIT. The yoyo consisted of three main parts: an injection molded body, a thermoformed and injection molded face, and a circuit with LEDs. The circuit included two tilt-ball switches so the yoyo would only light up in rotation.

Along with another team member, I manufactured the injection molded piece of the face, which we sized to snap-fit into the body of the yoyo for easy assembly. Because injection molded parts experience shrinkage during cooling, my partner and I ran several experiments to determine the minimum cooling time necessary to retain the integrity of the face's design, as well as, its expected diameter shrinkage. Our data collection process ensured that we could consistently and efficiently reach the target dimensions of the face during mass production.

 The target dimensions of the yoyo's face, designed to snap-fit into the yoyo's body.

The target dimensions of the yoyo's face, designed to snap-fit into the yoyo's body.

At the end of the semester, the team successfully manufactured 100 yo-yos under time pressure as part of our final deliverable.