Go To Manufacturing Report: Complete! (+ factory analysis)

This past week, we submitted and got feedback on our Go To Manufacturing Report. It is linked here: https://docs.google.com/document/d/1dahgDCJHA2kwwoSSGXB8z1S2kv9bXJi6iYlezRfwNiM/edit?usp=sharing

As a note, we calculated our Bill of Materials, expecting to make 50 yoyos, as we would have done pre-virtualization. Since the new goal is to optimize producing 1 million yoyos a year, there are design and cost considerations we need to discuss. For example, the shim we currently have is expensive and an unfeasible option for large scale production. And in addition to choosing a more cost-effective shim, we also needed to change the size shim we are purchasing, to better fit in the inner body.

In lab, we discussed the drawings - we learned that providing minimal, but critical dimensions was key. The purpose of drawings is to give a general idea of size and geometry, but generally, machinists will also have the CAD model, as well as and a conversation with you to go over the more detailed design choices. Using this advice, we changed our drawings to be clearer and to the point.

Finally, we updated our factory layout, to better reflect the process. We added the intermediate steps of punching out thermoformed parts, post-processing the 3D printed parts, and resizing the washer. We also added in buffers. An image is shown below:

As a follow up, in preparation for the final report, further cost analysis using the newly updated costs of machines and machining was done; the spreadsheet is linked here: https://docs.google.com/spreadsheets/d/1nLJwJ-P4BnaaIkk6XAL02KkZD2E8FaIIylLKo-Jqwb0/edit?usp=sharing

Additionally this week, we discussed our tecnomatix factory layout. We set a goal of producing 1 million functional yoyos a year. Using the parameters defined in our Go To Manufacturing Report (number of machines, cycle times, safety factors, efficiency of machines), we are constructing an optimal layout. Currently, with all the buffers set to 20 sec, the output put per day is 1149.49 yoyos. Some images of are layout are shown below:

After lab today, we plan to revise the factory layout and update the cost analysis to better reflect an efficient workflow for the mass production of our yoyos :)