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Mechanism Design
Introduction
A mechanism is a system of parts that transform input forces and movement into a desired set of output forces and movements.
First, make a mechanism along with your teacher.
Materials needed:
- stiff paper or cardboard
- ruler
- cutting tool
- string (if you have it)
- paper clips, metal brads, and/or push-pins (toothpicks work too!)
Select and make 2 mechanisms that relate to your biomimetic motion activity.
PROCESS
- Elements Look at the diagram of the mechanism. How many elements does it have? How can you make these out of cardboard, popsicle sticks, or other found materials?
- Pivots Look at each element in the diagram more closely. How many pivot points or holes need to be made in each element? What kinds of materials can you use for pivots? (hint: brads, paper clips, and string are very helpful). As you work, pay attention to what parts must be allowed to rotate or move.
- Fixed Base All mechanisms require a fixed point of resistance in order to move. Can you tape or "fix" part of your mechanism to your cutting board in such a way that you can operate it with one hand?
These slides are just a starting point. Most mechanisms adapt and deviate from these based on their applications. Don't worry if your mechanism doesn't perfectly match the slides; focus on trying to make sure your input force creates your desired output.
DELIVERABLES:
When you are done making your mechanisms:
- PHOTO Photograph your mechanism in its beginning and end states. (2 Photos per mechanism)
- GIF Upload your photos to EZGIF.com to make a gif of your mechanisms in action (2 GIFS). For best results, try to keep your camera in the exact same location for both photos. You may have to rig up a make-shift tripod.
- POST In the response slide, make a slide for each mechanism that has the two photographs and GIF.
Additional Resources: