Sprint Goals:
Get members familiar with the tools and skills used to design and optimize an aerobody (including constraints + criteria, surface modelling, and CFD simulations)
Learning to make your own design decisions along with applying feedback from peers and leads
Working within deadlines, having made progress with each review
Documenting progress using a design log
Topics to be Covered:
Concept Sketches → Design → CFD Simulations
Solidworks CAD Design (Surface Modelling)
Researching Material and Composites Manufacturing Techniques (Thermoforming)
Sprint Introduction:
You are tasked with designing a computer mouse. It is up to you on how complex and/or unique you want to design this mouse to be! The skills you will gain from this sprint can easily be applied to designing an aerobody, following the similarities between the general shape of the two!
There are no limitations or restrictions on your design but be sure to make it realistic and human friendly (i.e., it should fulfil its function and be usable)! For example, do not surface model a simple cube as that would probably not work as a mouse and nor will you learn much from it.
You may use the average dimensions of a mouse as a reference:
DIMENSION TYPE | AVERAGE RANGE |
---|---|
Length | 10cm - 14cm |
Width | 5cm - 7cm |
Height | 2.5cm - 5cm |
These are just general guidelines, if you wish to branch away from this, as long as your design is ergonomic, go for it!
Timeline:
Please feel free to set up independent reviews with leads or other members. You are not limited to the scheduled reviews.
Week 1:
In week 1 the focus is on conceptual design. Decide how you want to solve the design while keeping in mind constraints and criteria. Clear concept sketches with labels and descriptions give something to base CAD off of. Figuring out all of the dimensions in this phase will ensure your design is realistic and make your life easier when you move on to Solidworks! Note that it is okay to redefine your conceptual design as the sprint moves forward.
Bring To Review: Concept sketches (with labels + descriptions) along with exact dimensions.
Week 2:
After finalizing your conceptual design, you should advance to some CAD (the exciting part)!
Bring To Review: An in-progress first CAD iteration within SolidWorks, plus any questions/problems you may be having with surface modelling.
Week 3:
By week three you should have more finalized CAD and should begin adding and perfecting more complex features.
Bring To Review: Completed first CAD iteration within SolidWorks → surface modelling
Week 4:
A completely finished CAD model should be ready, this should be exactly how you want the design to look like in real life. All dimensions and features should be accurate and modelled using proper techniques. You should also perform CFD simulations on your mouse. Although CFD sims are not too big a concern for computer mouses, they are very important for MSXV! By going through a CFD simulation you will learn how we are working on optimizing the shape of the aerobody to improve our coefficient of drag and overall flow separation.
Bring To Review: Final CAD Design and Completed CFD sim within Solidworks
Additional:
Once you have finished working on your mouse design, start researching about manufacturing methods. For instance, you may want to start looking into thermoforming. If you were to manufacture this mouse, how possibly can you do so using thermoforming?
Challenge:
If you are up for a challenge attempt Design Sprint 2, where you will be designing your own aerobody!
Design Log:
Keep a design log for all progress! A design log will help organize all content for presentation.
Sample Design Logs:
https://docs.google.com/presentation/d/10ylmWYR_Er4OoCQ5UJIiymEIGTLgjv72pMDDRAr9HMI/edit?usp=sharing
Resources:
Surface Modelling *Highly suggest going through this session as it goes over all the basics you need*
https://youtu.be/lnJTfrqYfMU *If you are looking for a tutorial to follow as practice before beginning your own, this video can help*
/wiki/spaces/MFG/pages/1453817927 *For more information on thermoforming*