We have decided to use the jack-in-the-box release mechanism with a torsion spring based power system. We have decided on using an analog timer. We are currently researching more about balance wheel design and expect to have the design finalized within the next two weeks.
We met with the Project Sponsor Via a phone interview
Completed Chapter 1 of the Report (everyone)
Researched various Off-the-Shelf electrical components including a voltage supplies, rotary actuators, and microprocessors (Calvin and Alan)
Developed initial design of electrical system (Calvin and Alan)
Researched various analog timers from suppliers and concluded that we would have to design our own mechanism to fulfill our functional requirements (David, Denis, and Colin)\
Improved initial design based on sponsor comments (Everyone)
Met with clockmakers to gain expertise in balance wheel design (David and Denis)
Created Design Proposal Presentation (everyone)
Develop elementary CAD model of mechanical timer based design (David, Denis, Colin, Calvin, Alan)
Complete Chapter 2 of the Report (David, Denis, Colin, Calvin, Alan)
Go over CAD model with sponsor
Meet with Chris Cassidy and various clockmakers
David Vedra: Compile research on timing mechanism and help CAD the timing mechanism
Denis Yang: Determine mounting method of torsion springs
Colin Propst: Deconstruction Testing of kitchen timer
Alan Gaul: Calculate gear ratio and frequency of the balance wheel to obtain required out speed and torque
Calvin Zhong: Design the balance wheel
Comment (4/2/19, over phone): Container in the jack-in-the-box design may add a level of complexity and take up space, both of which the fishermen would not appreciate.
Action: improved box design so that the external storage container is collapsible and uses a net instead of rigid box.
Comment (4/3/19): Our project is similar in function to a previous 156b project, and looking at that projects webpage would be a useful source of inspiration. The link to the website is posted below.
https://sites.google.com/a/eng.ucsd.edu/156b-2014-spring-team15/home
Action: we reviewed the project and concluded that functionally it is very similar to what we want to accomplish. The one notable difference is that the timing mechanism used in that project was a pendulum balanced escapement wheel which is dependent on gravity. We would change our design by replacing the pendulum with a balance wheel.
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Between Week 1 - Week 3 [April 1 - April 19, 2019]:
-Develop Elementary CAD model
-Discuss CAD model with sponsor
-Review and finalize CAD models
-Purchase Parts for Assembly
Amount spent:
Kitchen Timers $16.99
Amount remaining: $4,284.01
Internal webpage updated.