Build Team Task List

Reflections

  • Final design direction
  • Decide what kind of forklift we are going to use.
  • Decide on a griping mechanism to attach to forklift.
  • Rework the chassis to fit a forklift design
  • Began to design and produce an NXT mount
  • Begin contruction of work benches
Today went really well we went from allot of ideas and probable problems to straight up picking a design and deciding to go for it all the way. Which was a cascading forklift with a gripping mechanism attatched to it. The hard part was really just to drop the arm design and focus on getting a more reliable and simpler design. We made some progress with the chassis by adding more realistic support and positioning for the rest of the mechanism that will be placed on it.

Earlier we had decided on using an arm, and then we attempted it. While attempting it we met many challenges, the shoulder of the arm, the wrist and gripping mechanism

!s. We had figured out what gripping mechanism we would use on the arm but we did not figure out how we would get the shoulder to attach. Once stumped for more then thirty minutes along with asking the advice of our supervisor, with no prevail, we discovered that it would overly complicated and drastically time consuming to continue this idea.   with these new discoveries we decided to go back to our W.O.T. and see if there was a a possible idea that would be simpler and that could be just as effective. We found out that a forklift design we thought would be not just simpler but overall better.

With the design/scoring/staking mechanism decided from arm to forklift: we reached another problem. Would we use a continuous forklift, cascading forklift, or even a fixed forklift. We did a verbal pro/cons list of the three. The first one to go was the fixed forklift due to its extremely limited and thus lack of scoring potential. So it was between cascading and continuous style forklifts. With the information from our coach that continuous is much more prone to jamming then cascading, while continuous has the benefit that it can go up and down at the same speed because it relies on the motor to move it. Ultimately our team decided to use cascading forklift design.

Next up was to decide on what mechanism use. We decided to use two C-channels, wrapped in Non-Slip pad, each attached to a respective servo. To make sure that we have added friction between the C-channels and the ball-crates we are planing on having a strip of surgical tubing between the C-channels

(Here is a rough sketch of how our griping mechanism will look like)

Sense we decided to go with the forklift idea we had to redesign our chassis a bit in order for it to fit a cascading forklift design. We added a two braces, a C-channel, to the bottom of the C-channels connected to our drive train. We extended our drive train for more traction. We also altered the harness to fit and work with a forklift design.

Build Team Task List

Programmer/CAD Team’s Task List

  • Set up a servo test program
  • Write a program that moves a servo with a controller.
  • The programmers accomplished both of there tasks in a timely matter.They did run into some strange issues which were solved by refreshing controller debugger window

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2867′s Attendence

-NF DT KT JH BM JM WO GM

 
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