Project 1.1.6 Compound Machine
2. Design Brief
3. Gantt Chart
4. Decision Matrix
5. Brainstorming List
- Pulley connected to switch powered by gears.
- Gears connected to a pulley, on the pulley something hits switch.
- Wheel as handle, turned powers gears which turns pulley which turns gear hitting switch.
6. Preliminary sketches
7. Final sketch with annotations
8. Building process, testing results, modifications
The first step in our building process was to brainstorm ideas on how we where going to use three mechanisms to turn a light switch on and off. Then when we figured out which idea was the best we started building. We used gears, a chain and sprocket system, and a wheel and axle as a handle to turn the whole system. When we got done building we tested it out. Our machine works but the only thing is that the gear that turns the switch has a hard time catching onto the switch. Our machine works so we didn't make any modifications.
9. Final design picture
10. Final Calculations
11. Conclusion questions
1. For which mechanism was it the easiest to determine the mechanical advantage or drive ratio? Why was it the easiest?
The mechanism that was the easiest to determine the MA or ratio was the gear system. It was the easiest because all I had to do was count the teeth and then simplify.
2. For which mechanism was it the most difficult to determine the mechanical advantage or drive ratio? Why was it the most difficult?
The mechanism that was the most difficult to determine the MA was the wheel and axle. It was the most difficult because we had to find the diameter of the wheel and the axle.
3. At what value would you estimate the input and output forces of your compound machine? How did you arrive at your estimated values?
I would estimate that the input and output forces of our machine would be .5 because it takes a lot of effort to turn on the light switch.
4. What modifications could you make to your compound machine to make it more mechanically efficient?
A modification that we could make is that the ending gear that is supposed to turn the light switch doesn't catch on to the light switch some times.
The mechanism that was the easiest to determine the MA or ratio was the gear system. It was the easiest because all I had to do was count the teeth and then simplify.
2. For which mechanism was it the most difficult to determine the mechanical advantage or drive ratio? Why was it the most difficult?
The mechanism that was the most difficult to determine the MA was the wheel and axle. It was the most difficult because we had to find the diameter of the wheel and the axle.
3. At what value would you estimate the input and output forces of your compound machine? How did you arrive at your estimated values?
I would estimate that the input and output forces of our machine would be .5 because it takes a lot of effort to turn on the light switch.
4. What modifications could you make to your compound machine to make it more mechanically efficient?
A modification that we could make is that the ending gear that is supposed to turn the light switch doesn't catch on to the light switch some times.