Marcus W. Montisano
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Crane Design Project
Description
Final Project for Mechanics Based Design Laboratory
Date
Spring 2022
Location
Johns Hopkins University
Skills
Manual machining (lathe and mill), Laser Cutting, SOLIDWORKS CAD Modeling, Vinyl Cutting
Objective
Lift a 10lb weight 1 inch from the floor in under 2 minutes and with a boom maximum deflection of 0.5 inches.
Role
I worked with team members D. Regli and O. H. Mitchell to run design calculations on boom deflection and gear tooth stress, design the CAD model in SOLIDWORKS, machine components, and assemble the crane.
Results
Our crane met the design constraints by reliably and repeatedly lifting the weight in under 20 seconds, recording the 2nd fastest time amongst the class.
Reflection
The primary limitations of this project were its limited material choices (plastic boom), a $25 budget, and purchasing components solely from McMaster-Carr. We performed various analysis in design the crane, including design factor selection, expected boom deflection, boom stress, gear tooth stress analysis, gear ratio selection, and power output estimation. This project taught me the importance of designing efficient solutions, to verify that off-the-self parts meet their spec sheets, and collaborative problem solving within a small team.
