The following page will go through the analysis used to design the device. A link to the most recent report will be available here.
Analysis 1- Gear Ratio
Analysis 3- Bending stress on Shaft
Current Report
Analysis 2- Gear Box
Analysis 4- Energy Experiment
Analysis 5- Scale of KE
Analysis 6- Minimum Shaft Diameter
Analysis 7- RPM requirement
Analysis 8- Minimum Shaft, Cutters
Analysis 9- Key calculation
Analysis 10- Gear key calculation
Analysis 11- Pin diameter
Analysis 12- Shear on shaft
The screen shot of the spread above was used as a tool to find the attributes of the gear that is needed for the cutting device. Upon entering the required RPM needed, a 20 tooth, 8 in pitch gear was needed and ordered from McMaster Carr.
This spreadsheet was needed because gears would not produce the needed speed reduction unless they were custom made. To bypass this issue, two sprockets were used that produced a 3:1 speed reduction.
Analysis Summary
The given page provides examples of all the analysis that was done to construct the cutting device. The most current report is linked at the top of this page. The largest issue that occurred was figuring out a method to reduce the speed from 1750 RPM to 600 RPM. Using spreadsheets provided from a previous class, it was deter mined that sprocket and chain system would produce the best results. Multiple distributors said that a 3:1 reduction is uncommon unless custom made.
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