Posts Tagged ‘chain

12
Feb
11

Another Design Flaw

We started at 9, took a quick lunch break, most people hopped back to work right away and we worked right up until 4. Today was a needed and well executed work day. We got a lot done, but the repetition can be frustrating, and sense of progress is hard to discern.

However, we did celebrate a few achievments:

-The electrical team put together their semi-final design for the electrical panel/board. I say semi-final, because it is subject to change, depending on if the lift or other robot components need the used space. Anything beats last year in this department though. We all know how gross it got last year, throwing it together last minute. With multiple stacks and little planning, it won’t be hard to top. It looks good to me, take a peak:

They even have a few wires routed!

-Another thing to applaud: The lift can be seen in a raised position below. The lift drive is assembled, as well as the braking assembly. We just need the chain for the dual reduction and for raising part of the lift. Maybe this can be finished tomorrow (fingers crossed).

Much of the necessary Spectre roping is ready, the freshmen have stepped up to the task and powerhoused through the prepartation process. I really hope that all this work means we’ll see it running tomorrow.

-Milling the Inner gripper components to save weight was easily the most painful task today and I would like to give a shout out to Alex, the persistence and perseverance was amazing. I don’t think I could work on only two parts, on one machine all day. They certainly do look pretty!:

-The OI prototype should be pretty much done, I hope that programmers can get that set up with the practice bot. Tomorrow, I’ll show you some side-by-side snapshots of both the prototype and final concepts :)

-We actually got some serious work done with the Popping mechanism, but ran into some unforseen problems.

The Raptor Claw (Acquring/Scoring assembly) is easily becoming the most resilient sub-assembly. With set-backs due to component requirements, shipping, having to remake parts and general struggles, I am not happy to point out yet another. Today, I pointed out a critical design flaw. Take a look at this Picture [Note: Inventor was taking forever to open on my laptop, so I used Paint, I was done before Inventor opened. Don't ask questions, it might not be pretty, but I think I painted the picture ;) ]

The way it’s currently mounted, the two fixed positions hold the braces, the braces can be pushed forward (so as to extend), however nothing keeps the pusher frame itself from flopping out! YIKES. This may be easily fixed with some sort of middle mounting location (which attaches both of the brackets together), but no matter what we do, a re-design is in order.

Besides the problems we run into, we got a lot done and have another full day ahead of us tomorrow. Still feeling positive about our situation, but we are running a fine line at the moment. This is our last week coming up and we have a lot to do!

P.S. I got complaints that my pictures were too big, better? I HOPE SO.

07
Feb
11

Fixing the Old & Welcoming the New!

If you have amazing Sherlock Holmes-like logical deducting skills, by looking at this picture, you may be able to guess at why Jordan appears sad. If you took it at face value (get it, it’s eating his face!), you’d probably be right too. However, I’m going to describe his sadness and relate this picture to the mood and results of tonight.

Deduction Point 1) Yes, the Bunny Hook appears to have come to life! It’s now a some-what working system. Which brings me to my point:  it’s missing a key item or two. The pneumatic cylinders! Unfortunately we ordered the wrong size cylinders and the Bunny Hook’s progress may be delayed a week. This is scary as we have only 14 days left to ship!

Deduction Point 2) If you look at the reflection coming off the lower part of the metal frame, you might notice that insanely bright and Windows 7-ish color. That’s because it is! This picture was taken next to the CAD machines which went unused tonight. All present CAD members were in the shop hard at work on some project or another. That is also somewhat nerve-wracking, but we need the labor.

WHICH brings me to my next big topic. Remember how the lift had some major functioning issues? Well, Ken dropped off the frames for weldment this morning and picked them up on the way to the meeting. Most of the people in the shop were working on bringing this back up to speed, since the new weldments arrived.

Others were working on preparing our second drive base, by adding chain, sprockets, wheel assemblies and chain tensioners.

The Creative Resources team (a.k.a. P.R.) hasn’t recieved a major part in the blog yet, so I inquired as to their status and got the following quote:

“A lot of edits are done, pages are mostly updated. We are coming close to switching over to divs tables. The switch will make the pages smaller and quicker to load. Check out the journal pages (http://ahsrobotics.us/journal/index.html) to get a taste at the new format and minor style change.” -Roxy

Well, I have a lot of photos from this evening which may interest you. I shall saturate tomorrow’s post with them as this post was lacking in that respect. I also have on my agenda that I should inform you more about what the programmers are up to and how the prototype OI (Operator Interface) and CAD model of the OI is coming. Stay tuned!




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