Week 1: CAD + Final Project Ideation

HTMAA 2024 - Jonathan Cohen

Overview

I am interested in urban mobility vehicles and robots that can improve a city’s climate, economic, and social performance. I hope that my final project can be a way of exploring my interests and also an opportunity to strengthen my mechatronics abilities and help advance my research focus.

Possible Ideas

Description of the Project: City Mobility Unit

I want to build a bike lane platform that provides the basic requirements for micromobility movement and functionality in one package...

Problem

Cost and interoperability of micromobility vehicles. Parts and design ecosystems are separated silos that lead to lots of e-waste.

Tools Used

Sketching and Fusion360

Ideation

I did some brainstorming before getting into CAD to on the concept. I am imagining a low profile platform that is fully drive by wire and has on board sensing for autonomy. The vehicle should fit uses for personal mobility, cargo, and various utilities needed in city movement. It should have universal mounting rails on the deck of the vehicle. Maybe it could be transformable between modes? Like the citycar, the CMU should have hub motors to avoid any mechanical linkages that need to transfer power to the wheels.

CMU sketch

I am going to model this assignment in fusion360. I have been impressed by how much fusion360 has improved over the years. I do get nervous modeling complex parts and assemblies in fusion but I am excited to get deeper into fusion in this class

CMU sketch

Start with the base sketch

CMU sketch

Extrude!

CMU sketch

Working on some mounting provisions for the wheels. The front also needs a little wheel well for steering to avoid chassis collisions

CMU sketch

create an axis for front steering that I will later use to animate the steering of the vehicle

CMU sketch

I am iteratively adding in parameters and relationships depending on what features should be driving the parameters.

CMU sketch

Making a wheel in a new component. The lack of rigid hierarchy in fusion always suprises me but I don't dislike it.

CMU sketch

Added a tire to the wheel with revolve function

Final

City Mobility Unit

CAD link

Will this be my final (final) project? Stay tuned!