Compound Machine - Bottle Cap Closer
Design Brief
Gantt Chart
Decision Matrix
Brainstorming List
Preliminary Sketches
Final Sketch
Building Process, Testing Results, and Modifications
First we started building the most simple idea we had after our brainstorming and sketching of all our ideas. As we were constructing we ran into small problems like gear placements, alignment of holes, and keeping the bottle still. We did not change or original design, but we did add a chain and sprocket system to the machine when we needed a third type of machine. When we began testing the machine repetitiously, we found that the bottle was too light and needed water in it, and the gears sometimes scrapped the side wall of the bottle enclosure, so we switched gear sizes and the problems were fixed. Overall we decided not to use a design that included multiple wheel or a larger frame to conserve parts and time for constructing the machine because we were a smaller group.
Final Design
Final Calculations
Conclusion Questions
1. The gears were the most simple to determine because we only needed to count the teeth and find the ratio by using the formula that divides the output over the input.
2. The most difficult was the wheel and axle because we had to find exact diameters for the wheel and we had to determine how the ratio would be set up, whether the effort and resistance diameters should go on the top or bottom of the ratio.
3.We estimated the machine to have a mechanical advantage of 14.4, and we found this by multiplying the mechanical advantages of the individual machines.
4.We could have used a different wheel with a larger diameter of resistance so we won't lose as much power in the system.
2. The most difficult was the wheel and axle because we had to find exact diameters for the wheel and we had to determine how the ratio would be set up, whether the effort and resistance diameters should go on the top or bottom of the ratio.
3.We estimated the machine to have a mechanical advantage of 14.4, and we found this by multiplying the mechanical advantages of the individual machines.
4.We could have used a different wheel with a larger diameter of resistance so we won't lose as much power in the system.