This is a page for Tommy Tran to make note of investigations that should be fully carried out and verified.
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Short Note of Things to do:
Goal for June 27th Sync Up:
Short Recap
The problem definition and analysis has been completed.
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complete detailed design of the screws and placement
along with appropriate simulation and calculations
perform weight reduction and Design for manufacturing and assembly (DFMA)
drawings
GD&T - I am wondering how flat and parallel it has to be. And to create the correct datums so it can be manufactured properly using a mill. Also proper tolerancing.
bill of materials and supplier interfacing (from E3 store or from our resources on the shelf)
Things to do
Detailed design of screws and placement (1.5 weeks)
**We are going to be ordering screws from E3 Machine Shop. See the section below regarding supplier interfacing so you can find more information regarding your variety of screw choices.
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Also conduct a mesh convergence study to ensure your simulation results are accurate.
Another interesting resource is:
Shigley’s mechanical engineering design textbook
but this is a 3B course textbook so uh idk. it might be more useful to just google around to find what you might be looking for.
Weight reduction and design for manufacturing and assembly (DFMA) (1 day)
Once your design is robust and you have a very accurate simulation, it would be useful to see how you can reduce any weight/volume/mass, etc. to reduce costs. The only consideration is that it should still be rigid and robust so that it does not deflect, fail, or is no longer easy to handle.
This is also a good plan to do research on limitations of your manufacturing process (i.e. milling). Create a manufacturing plan that accommodates the limitations and best practices of milling in order to increase accuracy of your part. Your manufacturing plan could be consulted with the E5 Student Machine Shop Instructors including the people listed on this page: Contacts | Engineering Student Shops | University of Waterloo (uwaterloo.ca). They have helped me a lot in all my previous projects. They prefer speaking in-person to review your work and also to take a look at your raw materials (if you have them). They’ve been doing this for a long time.
Drawings (1 day)
See resources on confluence for some tips on making drawings.
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how important that surface is, i.e. if it doesn’t matter how flat or accurate it is then take note that you can loosen the tolerances, and vice versa (if the flatness matters a lot then…)
your DFMA - it would be good if you planned out your machining steps so that you minimize number of setups, machining steps, and therefore chances of error.
Bill of materials and supplier interfacing (1 day)
We are going to be sourcing our materials for this project from E3 machine shop.
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For bill of materials, please create a list of the raw materials and hardware required for your final design. Please also give a cost estimate based on the Online E3 Machine Shop Reference. I would like you to get an updated and more accurate cost by meeting Jorge in-person once lockdown lifts. We would very soon after confirm purchases so we can immediately begin machining it.
Onsite Manufacturing
Beginning June 7th preferably