Electromechanical Design:
Auto Vender
Auto Vender is a vending machine with 2.5 degrees of freedom. The capstone project for ME 360, Electormechanical design, design and execution were completed over a 4 week period
Planning
As a team, tasks were split and pointed based on importance and a rough bill of materials was created to avoid last minute purchases
The original gantry design was built with a horizontal beam traversing up and down.
This later evolved into a vertical beam traversing side to side to reduce weight of the vertical component.
CAD
Collaborating in Onshape, the team created a comprehensive 3D model of our design speeding up each design iteration and tweak.
The Details:
Entire assembly contains over 100 individual parts
70 of the parts custom designed by team
28 uniquely designed parts
Iterations
The original x-gantry slider had larger bearings but only on 1 side.
The final version utilized 4 bearings to avoid binding
Tolerancing for the belt interface was absolutely critical
Assembly
All hands on deck!
Mounting the Arduino proved to be a small oversight but was quickly fixed with the 3d printer and a Dremel.
Presentation
The end product successfully vends for all 2 character locations with locations that have already been accessed returning an error message
Sans-cover, the tiered buttresses and labels are a subtle nod to art deco