Project 1.1.6 Compound Machine Design (VEX)
Introduction
Mechanical systems often require a combination of mechanisms to complete a given task. Any time two or more machines are combined, the result is a compound machine. If many mechanisms are combined, the machine may even be referred to as a complex machine. Compound machines can range in complexity from a crane or automobile to a simple manual can opener. A bicycle is an example of a compound machine. The pedals, brakes, handle bars, and sprocket systems are just some of the mechanisms on most bicycles. In this activity you will work in teams to design and build a compound machine to accomplish an instructor-specified task.
Conclusion Questions
1. For which mechanism was it the easiest to determine the mechanical advantage or drive ratio? Why was it the easiest?
2. For which mechanism was it the most difficult to determine the mechanical advantage or drive ratio? Why was it the most difficult?
3. At what value would you estimate the input and output forces of your compound machine? How did you arrive at your estimated values?
4. What modifications could you make to your compound machine to make it more mechanically efficient?
Introduction
Mechanical systems often require a combination of mechanisms to complete a given task. Any time two or more machines are combined, the result is a compound machine. If many mechanisms are combined, the machine may even be referred to as a complex machine. Compound machines can range in complexity from a crane or automobile to a simple manual can opener. A bicycle is an example of a compound machine. The pedals, brakes, handle bars, and sprocket systems are just some of the mechanisms on most bicycles. In this activity you will work in teams to design and build a compound machine to accomplish an instructor-specified task.
Conclusion Questions
1. For which mechanism was it the easiest to determine the mechanical advantage or drive ratio? Why was it the easiest?
2. For which mechanism was it the most difficult to determine the mechanical advantage or drive ratio? Why was it the most difficult?
3. At what value would you estimate the input and output forces of your compound machine? How did you arrive at your estimated values?
4. What modifications could you make to your compound machine to make it more mechanically efficient?