Week6- Mid-term Project

First, I recap the scenario which shows the auction, one auctioneer, falling the hammer to make a deal, and one bidder, lifting the number paddle to bid.

Based on last week’s feedback, I added one more layer as a bearing in the middle of the cams and scenario’s platform to constrain the moving rods in a relatively limited path. 

As the result of thinking about how to make the characters in the most effective way, I sketch each component of the characters in Illustrators in advance which can give relative guidance when I making it even though practice is the only way to test assumptions.

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I prioritized the making of the platform as the last step since the relative distance between each character is fixed, the platform’ size should depend on the whole scenario to avoid over-big or over-small. Thus the validations of movement are finished on my cardboard prototype. 

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Midway through making the characters, I found that there 2 linkages in each arm, and more effort had to be made on it. I noticed that foam clay, which I prepared to use for the head, could be a good material for making the nut or block. In my case, it’s a good way to simplify the making since my characters are small and leverage the materials I have. 

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One thing I want to challenge in this project is the relationship between the time difference, while the falling of a hammer once another hand should shake three times. Even though I tried to adopt the different shapes of cams to achieve the time difference, the relationship is not apparent. The gears might be a more precise solution for this. But in general, I’m satisfied with the assignment. 

Week5- PCOMP sketch

Junru and I worked together to start brainstorming for our midterm sketch this week. We plan to create an egg timer that can time eggs for different levels of doneness. It will also display a real-time clock, essentially providing a clock for the kitchen space.

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Week5- Linkage Study& Midterm Prototype

Linkage Study

Inspiration Video:

MotionGen Study:

Analysis of the back leg

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Video of model:
 
 

 

Midterm Prototype:

The scenario is the auction; one auctioneer and one bidder would be included. Because the mechanism for the bidder is simple, he holds the number paddle. There is only an auctioneer in the prototype.

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I assumed that the time variance depends on the size of the cams, the prototype validated it’s wrong. The size of the cam only matters the moving distance of your object, the condition of size is the principle for designing gear systems like the clock mechanism.

So I changed the cam to a triangle with a curve, letting the left hand go up and down for 3 rounds while the hammer on the right hand would fall down for once. It’s not clear in the prototype due to the rough material and measurements but the principle should be right.