Project 1.1.6 Compound Machine Design
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Brainstorming List
Other ideas we had were-
Conveyor belt using chain, sprocket and gear train
Pulley and belt, and the can being hung below
Pulley and an inclined plain
We didn't use those designs because the wouldn't meet the requirements or the wouldn't be reliable.
Other ideas we had were-
Conveyor belt using chain, sprocket and gear train
Pulley and belt, and the can being hung below
Pulley and an inclined plain
We didn't use those designs because the wouldn't meet the requirements or the wouldn't be reliable.
Preliminary SKETCHES
Final sketch
Final design picture
![Picture](/uploads/2/3/4/1/23417088/1410999366.png)
Building Process
First we built the base, and made sure it was long enough and strong enough to hold the conveyor belt. Then we built the pieces to hold the sprocket up and then modified it so the conveyor belt was tight enough. After that we added a gear train to rotate the sprocket and added a lever on the top of the gear train.
Testing Results
In testing we found that the can would not stay on the belt, it would roll off. We also noticed the belt was not very tight and that it was hard to turn the sprockets.
Modifications
We added railings on both sides and also added a box to catch the can in so it wouldnt roll away. To fix the loose belt we tried added sprockets in the middle but they would fall out. We added rubber pieces to make the sprocket easier to turn and also bent the rubber pieces back some to tighten the conveyor belt.
First we built the base, and made sure it was long enough and strong enough to hold the conveyor belt. Then we built the pieces to hold the sprocket up and then modified it so the conveyor belt was tight enough. After that we added a gear train to rotate the sprocket and added a lever on the top of the gear train.
Testing Results
In testing we found that the can would not stay on the belt, it would roll off. We also noticed the belt was not very tight and that it was hard to turn the sprockets.
Modifications
We added railings on both sides and also added a box to catch the can in so it wouldnt roll away. To fix the loose belt we tried added sprockets in the middle but they would fall out. We added rubber pieces to make the sprocket easier to turn and also bent the rubber pieces back some to tighten the conveyor belt.
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Final Calculations
Lever IMA= 6
Gear Train GR= 1
Belt GR= 1
Total MA= 1.2
Lever IMA= 6
Gear Train GR= 1
Belt GR= 1
Total MA= 1.2
Conclusion Questions
Easiest mechanism to find the MA or DR was the belt and the gear train, because the sprockets each had the same number of teeth on them.
Most difficult mechanism to find the MA or DR was the lever, because it was hardest to calculate.
We would estimate the input and output forces off the lever and belt
Modifications to make our compound machine more efficient would be to make the lever longer or change out the sprockets for ones with different teeth size.
Easiest mechanism to find the MA or DR was the belt and the gear train, because the sprockets each had the same number of teeth on them.
Most difficult mechanism to find the MA or DR was the lever, because it was hardest to calculate.
We would estimate the input and output forces off the lever and belt
Modifications to make our compound machine more efficient would be to make the lever longer or change out the sprockets for ones with different teeth size.