CAD Design & 3D Printing (Autodesk 360, FDM)
Delomni represents our visions of cars in the future. It is an autonomous and omnidirectional car that we made with the main parts being 3D printed. The seating arrangement inside is assumed to be circular to enable closer interactions between passengers.
What I did: foam prototype, CAD outer chassis (co-design) & remote control; Assembly of the car
Team Members: Bethany Lemanski, Sara Dabzadeh, Ziru Ling, Dennis Chew
Delomni was created from class ME232 Additive Manufacturing, offered by Stanford University.
Sketches and Foam Prototypes
We made out several sketches before CAD design just to get a basic sense of what the general shape will look like. Later, we chose to go with the first one because it saves the most material by realizing topology optimization, and also we feel like it looks the best.
Here is a foam prototype to give a basic idea of the size:
The parts being 3D printed are basically the bottom chassis and the outer shell.
This is the CAD Design of the main chassis:
Here is the outer shell:
At last, due to the fact that one of our team mates is an architecture major, we decided to add a shell variation of Delaunay structure on top of the above shell as the windshield, in order to create more beauty and elegance:
The whole outer shell assembly:
Basically, all the electrics will be hidden in the inside. Here is a picture without the outer shell, but once it is printed out, it should be able to cover all the wires:
I was also involved in the design of the remote control. I sketched out several versions of its shape, and later chose to go with the second one because it looks more comfortable when it's held in hand.
This is a screen within the CAD Design process:
Unfortunately, because of the limited time and excess demand for the 3D printer located in Stanford's Product Realization Lab, we were unable to print out the out shell of the remote control. However, we did assemble all of the electric parts in order to make it function.
This is the ideal assembly of the car created by Auto CAD:
We used the FDM printer to print out the chassis and the outer shell. Unfortunately, still because a lot of people were using the printer, we have to put our part at the same plate with others', and due to the fact that the base plate was not big enough, we have to cur out the part near the wheels, and also cut the whole shell in half in order to make it on time.
This shows the two halves of shell when it was first printed out.
The support structure of the shell:
When it was assembled, the motors were exposed. We felt that it did not look good, so we decided to bend several acrylics on the heating machine, and then attached them to cover the motors.
We also decided to spray the entire shell gold to add more aesthetic value to it.
The Final Prototype
The Final Demo
This is the path our car has to go through during the final demo to demonstrate that it can be fully controlled:
A real shot of the path:
This is the video to show that our car went through the final demo:
This is my first project involving ME and CAD design. Big thanks to my teammates! None of this will happen if it was without you guys!!