Design 1 Projects
Design 1 Projects
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Project 1 - Linkage Design
Project 1 - Linkage Design
Designed a linkage to transmit circular motion into linear motion
Used hand-calculated stress analysis to design approximate linkage widths to prevent breaking
Used Solidworks FEA to confirm hand-calculations and determine stress concentrations at hex shaft and adjusted widths accordingly
Wrote technical report and presented results of testing
Project 2 - Open Ended Design
Project 2 - Open Ended Design
For Project 2, we were given the task of designing a mechanism to make it easier for people with physical disabilities. We chose to focus on people with weak or unsteady grips, for example people with cerebral palsy or wrist tendonitis. We chose to make a product to make it easier for these people to accurately position a drill to be perfectly perpendicular with the drilling material.
Our final design was the Power Press Drill Companion, which was designed to be essentially a portable drill press, using a pre-existing hand drill as the spindle. This design features a series of considerations. For example, we used a clear acrylic baseplate, which was intended to allow the user to see the material that they were drilling clearly. In addition, we used springs to keep the drill and cradle at an equilibrium height, so that the only force required by the user was a downward pushing force.
In terms of analysis, we used an FEA analysis to find that in axial force, the structural integrity of the design is not a concern. However, if force is applied laterally (for example, if the user pushes in the wrong direction on accident), the brackets at the bottom have large stress concentrations. In an actual design, we would replace these acrylic brackets with metal ones, but because this was a prototype we made them out of laser-cut acrylic.
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