| Project
Timeline
Fabrication Timeline
Project
Timeline
Week of 30
September [3 class periods]:
- At the
end of each class period (save 15 - 20 mins or so), take a look at our
proposal and make any necessary revisions. Doing this bit by bit will
save us some time the night right before the exhibition.
- Be pretty
darn sure of our dimensions by the end of Monday and start into the
math. We really need to talk to Dave about this stuff to figure out
if our new dimensions will actually work (which was our problem last
time).
- Learn
Working Model on Wednesday. The program, hopefully, along with MATLAB,
will save us some manual trial-and-error calculations by running them
all for us.
- Once we're
able to run some simulations with Working Model, we need to start discussing
how we're going to do our practice run (with all wood, presumably).
This will involve deciding which parts we'll need and how we're going
to order them. Be 99% sure, at this point, that our budget accounts
for this...
Week of 7
October [3 class periods]:
- Working
Model simulations.
- Solidworks,
Solidworks, Solidworks. Let's have the majority (everything but assembly?)
done for sure by the end of Wednesday.
- Finalized
budget for submission -- including all the little pieces (fasteners,
etc) that we'll need. This can be done Friday, once our simulations
and CAD give us a better idea of what will be necessary.
Week of 11
October [no class periods, exhibition on Friday]:
- Final
drafts of everything (into pdf files, on the Internet)
- Create
presentation
- Do anything
we forgot to do
Week of 21
October [1 - 1.5 class periods]:
- Once budget
is approved, begin ordering real parts
- Start
physical modelling once mock-up parts come in
- Keep doing
math...
Week of 28
October [3 class periods]
- Keep working
on the prototype. Make appropriate changes to documents as problems
with the prototype appear. Try to finish prototype this week and as
much for the exhibition as possible.
Week of 4
November [2 class periods]
- Last-minute
preparation for the exhibition.
- Assuming
our prototype is successful, and assuming our real parts have come in,
start fabricating final sculpture.
11.22.02
... Ideal (massless, frictionless) situation: have sculpture completely
finished and ready for debugging.
[Update as of 11.22.02:
we've met our ultimate goal, although along the way we haven't exactly
followed our schedule precisely. Our prototype was not finished until
the week of 11.11.02...]
Fabrication
Mounting Board
- Will
be constructed from a plywood/aluminum backing (epoxied together) and
a steel front, cut to dimensions using a bandsaw. The back and middle boards are mounted to opposite sides of a large ball bearing.
Joles plans to weld the three components together.
Drive Mechanism
- The reservoir
will be constructed from welded steel with a Plexiglass front. We are
considering acrylic bonding for this, but realize that such methods
require permits we are unlikely to get. Water-tight epoxy is also a
possibility here.
- The Delrin
gears will be ordered from Small Parts and mounted onto axles (likely
with cotter pins through drilled holes) purchased from a home improvement
store. These in turn will be mounted (again, probably with cotter pins)
to holes drilled in the acrylic on the reservoir.
- Bearing
balls will simply be poured into the reservoir and sealed in.
- The turnstile
will be constructed from parts we find from junkyards, etc, in a very
informal way.
Aesthetics
- Pieces
of cork will be epoxied to the fronts of the gears.
- The pointed
ends (duh) of cocktail umbrellas will then be put into the cork, successfully
mounting our aesthetic components to the drive train.
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