CNC Machining Technology
The Senior Project process is broken down into four checkpoints. Currently, I have completed two of the four checkpoints. The final checkpoint is due in April 2023 on Senior Project Night.
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For more information, please visit the Sunapee Middle High School Senior Project page.
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Checkpoint #1
For my first checkpoint, I began to figure out how my CNC machine will take shape. I met with my senior project mentor, Lovell Comstock who is a former engineer at Corning, Inc., to talk about CNC basics (spindle options, servo drive vs stepper motor control, etc.). After our first meeting, Lovell and I toured Moore Nanotech in Keene, NH where I learned about ultraprecision machining and the technologies they use to hold angstrom-level tolerances.
Checkpoint #2
After talking with Mr. Comstock, I began to model out the components of my machine. I spend hours taking dimensions off of components I planned on using and came up with the first iteration of my machine. After consulting Mr. Comstock about my design, he pointed out a number of potential design flaws (using linear bar bearings rather than linear rod bearings, moving the gantry of the machine rather than just the stage, etc.). I again turned to CAD to remodel much of my machine. This process continued until Mr. Comstock could no longer foresee any issues, and I began to order parts.
Checkpoint #3
Moving forward I plan on constructing my machine according to my drawings. I have a number of design and electrical issues I need to address before the machine will be operational. I also plan on measuring the accuracy of my machine after its completion (potentially using some sort of CMM).
Checkpoint #4
In my fourth and final checkpoint, my CNC machine will be completed, and I will prepare a presentation and demonstration during the Senior Project Night Gallery.
