Our project status – Steven Kung
Our team decides to submit GR3 report on next Monday and each team member has started to write contents for activity. Also, we are trying to do some simple experiments to test our mechanism design. We bought two pieces of glass, brush scrapper and deicer from the auto part store and put the glass in the refrigerator to make ice on it. With deicer spraying, we test whether brush work or not. On the other hand, we start to create another survey to understand aspect of aesthetic and ergonomics. Two of us will use solidwork to draw the engineering drawings for our product, such as assembly drawing or part dimension drawing. And we will take the drafts to Bob, checking its feasibility. Manufacturing and validation plan can be carried out after we finish the CAD.Existing/interesting finding – Queenie Lou
This week, we started to work on our gate
review 3. We bought the glass as the prototype of the windshield and we use
chamber to get ice on the glass as the experimental condition for our material
and calculation. We did lots of experiments and we find the material of the
brush we wanted to install first is not solid enough to swipe the ice off. We
tried several brush and finally we found the good material for our brush. After
getting the right material, we started to measure the force and we got the
normal force is between 4-6 lbs and resultant force is around 8 lbs. After the
experiment, we discussed about our design and started to work on the cad
drawing and manufacturing plan. Ice-breaker wanted to finish the first draft
for our gate review 1 before next Monday and then we will have enough time to
revise and develop our report and finish it in perfect like last time. Go
ice-breaker!!
Challenges - Ivan Manuel
At
this point, we found a lot of challenges in preceding our project. The biggest
one I think is making a solidworks CAD model since none of us are really expert
on it, and still need to do online tutorial in making one. We are also still
unsure of how the device would look like, what kind of actuator would we use
(DC motor or dynamo kit), where to locate each components, and so on. Second,
is doing the testing experiment in determining the best rotational movement.
Some group members think a rotating head brush just like an electric toothbrush
would work best, while the others pitch an idea of making a bunch of fin on the
stick handle which rotates and hit the ice on the screen perpendicularly.
However, it was intuitively decided that this second method has a higher risk
of damaging the windshield, and therefore its not being pursued any
further. The third challenge would be
synchronizing the GR3 activities, since one activity need to wait for the other
activity to be completed.
Future Plan - Yaqi Huang
Based
on the experiment we did this week, we decided to use deicer liquid first to
loose the ice and then use brush to clear the windshield. Also we decided the
motion of the brush was rotation. The next step is to do another experiment by
a force sensor to detect the force the brush needed. Once the force is decided,
the motor can also be chosen. The next week we will focus on the CAD and the
paper work for the Gate Review 3. For the CAD part, we need to do the 3D model
as well as engineering drawings. With the engineering drawings, we can make
manufacture plan. The plan will help us to produce the product in the next
stage. For the paper work, we will do some calculations to show why the product
was designed like that and give more details about the product.
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