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  #121   Spotlight this post!  
Unread 12-31-2013, 02:01 PM
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Re: Announcing the 2013 December Design Competition

Question for Andrew: Although I wanted to fully participate in this thing, I never really got the chance to do a lot of CAD work. However, I did spend a lot of time thinking of a design, and I am currently working on a simple CAD model to demonstrate my thoughts about the challenge to the community. It is just a sketch of a design, rather than an actual model ready for production, but do you still think that it would be worthwhile to submit it? I'm going to make it either way, just so that I can show people my design, but I'm not sure if it would count towards judging.
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Unread 12-31-2013, 02:16 PM
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Re: Announcing the 2013 December Design Competition

Quote:
Originally Posted by Pault View Post
Question for Andrew: Although I wanted to fully participate in this thing, I never really got the chance to do a lot of CAD work. However, I did spend a lot of time thinking of a design, and I am currently working on a simple CAD model to demonstrate my thoughts about the challenge to the community. It is just a sketch of a design, rather than an actual model ready for production, but do you still think that it would be worthwhile to submit it? I'm going to make it either way, just so that I can show people my design, but I'm not sure if it would count towards judging.
Submit either way.
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Unread 12-31-2013, 06:55 PM
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Re: Announcing the 2013 December Design Competition

Here's a picture of my robot, and a STEP file of the entire thing.

Picture:
https://drive.google.com/file/d/0Bxr...it?usp=sharing

CAD:
https://docs.google.com/file/d/0BxrM...lNYzRveHM/edit
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Unread 12-31-2013, 09:31 PM
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Re: Announcing the 2013 December Design Competition

I'm not sure I can really count this as an entry, since I have no clue how to get Blender to give me a good .step file, so here are some pictures of my design, along with a link to the blend file.

I designed this robot to be built on the resources budget of my team, which is hand tools, very limited machining sponsorship, a ton of VEX parts, and the welding class three hallways down. In practice, it would lift one human-fed crate at a time up and deposit it onto the shelf. It features:
  • Wide configuration Kitbot
  • 4-CIM Drivetrain
  • Three-tiered electronics board
  • 80/20 - based elevator
  • VEX rollers to deposit crate
  • Andymark Wormbox powering the lift
  • Machined container with sponsors' logos cut into the sides

The pictures are here:
https://www.dropbox.com/s/6psinnh4dvkfxqf/Rotated.png
https://www.dropbox.com/s/o5vvruda923slek/Feeding.png
https://www.dropbox.com/s/mayt3fn18hnh6dt/Deposit.png

And the blend file:
https://www.dropbox.com/s/w5flfp92hs...kBarrage.blend

It has been a fun design season. I am excited to see what everyone else came up with!
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Unread 01-01-2014, 09:22 AM
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Re: Announcing the 2013 December Design Competition

Well, here is my design... concept (not much of a CAD, but whatever). Btw, some dimensions might change if I were to actually CAD the real thing for things like structural concerns.



Here is my description from the email:

This robot picks up crates off the floor by aligning the corner of the crate in the v in the front of the robot. It then picks the crate up using one of the spring loaded claws designed to grab the corners of the indents in the crate. There are 3 of these claws attached to a pulley driven by 2 cims. Because the claws are spring loaded, they will expand outwards to clear the create wherever you see the ramps on the side of the tower. This happens twice: once to pick up the crate and one to drop it into the hopper. The hopper is designed to start inside the frame perimeter, but then immediately be extended outwards by window motor driven linear actuators (not shown) to a position where it can dump into the 1 point goal, and stay in that position. It can hold 3 crates. When the robot is full, it will drive up to the 1 point goal and release all the crates in the hopper, as well as any in the claws, by opening the window motor driven gates.

The reasoning for this design is that there is a limited number of crates in the feeding station. Especially with Ri3D probably screaming at low-resource teams not to attempt a floor, and giving them efficient feeder-loaded scorers. On the other hand, there are going to be so many crates on the ground it will be hard to drive (a good drivetrain consideration if I made one). So for a top tier robot, which is what I decided to create, floor loading is going to be a necessity. I also decided that because of the high capacity, it would be more efficient, and possible easier, to hold multiple crates and dump into the 1-point goal than place 1 crate at a time into the 2 point goal. Also, I figured that many teams are going to have a lot of trouble lining up square with crates, so I line up with the corners.
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Unread 01-01-2014, 09:53 AM
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Re: Announcing the 2013 December Design Competition

I forgot to include my description/ game annalysis when I put my CAD up, so here it is. It is a bit long, but it's all bullet points.
Design features:
1. Funnels on each end of the robot to center crates
2. Pivoting telescoping arm
3. Claw attached to arm to pick up crates
4. Single speed swerve drive
5. Design abilities
6. Fits under overpass
7. Loads from the floor
8. Loads from the feed station
9. Places crates on the high shelf
10. Scores on the high shelf in auto
11. Loads from each side of the robot
12. Scores one crate at a time

Game Analysis
1. There are many more crates on the field than in the loading stations. A good team should be able to score all or almost all of the crates from the feeder station on the shelf if they can go under the overpass, and can score two crates per run. Because of this, relying solely on the feeder station is not a valid strategy since there are three teams on an alliance and even at one crate per run from each robot, the crates would run out.
2. The alliance crate is an extremely important game piece because a good team should be able to score around 100 points per match, so the alliance crate doubles that to 200.
3. The shelf scores twice as many points as the high tank, and if you can pick up off the floor, the necessary travel distance is the same for each.
4. A mechanism to put crates on the shelf is somewhat more complicated than a mechanism to dump in the tank.
5. Autonomous is much easier than it seems because the crates are scattered randomly around the field and if the robot goes straight across the field, it is likely to run into at least one crate, especially if it is going for the shelf. Using a funnel, it would be possible to collect at least one crate while going all the way across the field, and then pick it up and score it. It might be possible to score several crates in autonomous this way.

Swerve
1. Allows the robot to quickly maneuver to collect crates, and rotate to place the crates on the shelf while it is moving towards the shelf
2. Single speed
3. Dual plate design; one plate on top, one on the bottom plates made of steel to add counter weight
4. Quick disconnect wheel module; the wheel module comes off with one stop collar. The drive belt pulley and rotation sprocket stay in place when the caster is removed, allowing for fast and easy maintenance
5. Structural bumpers
6. Bumpers are made in two corners, and have a structural mount.
7. Mounting is done with a piece of 2x1 box tubing which is bolted to each plate
8. Mounts are made of steel to add counter weight

Also, thank you to all of the people who created this challenge. It kept me occupied for most of the month, and it was interesting to design an entire robot on my own whithout having much input from anyone else.
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Unread 04-13-2014, 02:30 PM
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Re: Announcing the 2013 December Design Competition

I don't recall seeing the winning designs for this challenge anwhere. Does anyone know what they were?
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Unread 04-13-2014, 02:58 PM
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Re: Announcing the 2013 December Design Competition

The winners were privately contacted as we wished to honor the privacy concerns that many submitters asked of us. The main thing is many submissions used new designs that these teams applied to their 2014 robots, and I'm not sure if everyone is ready to share yet. If they would like to, the winners may come forward publicly anytime and share their designs.

That being said, almost every submission we received was amazing and unique in their own way, and all would have been powerful contenders in the game Block Barrage, had it been played.
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Unread 04-13-2014, 06:47 PM
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Re: Announcing the 2013 December Design Competition

Thanks! I could see that, it was a great excuse to design new concepts, and there are a lot of similarities between our 2014 robot and my submission.
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Unread 04-14-2014, 12:21 PM
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Re: Announcing the 2013 December Design Competition

So whats the likelihood of this occurring again this year? I wish I hadn't missed this last year.
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Unread 04-14-2014, 12:34 PM
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Re: Announcing the 2013 December Design Competition

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Originally Posted by Mason987 View Post
So whats the likelihood of this occurring again this year? I wish I hadn't missed this last year.
Same! If there is some additional planning that needs to take place I'd love to help out with this!

I think it would be neat to kickstart this much sooner in the off-season so teams can use it for CAD practice or mock kickoff brainstorming. December is a little too late to make it a team activity.
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Unread 04-14-2014, 12:53 PM
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Re: Announcing the 2013 December Design Competition

I would love to see this come back next year if there's enough interest. Unfortunately I won't be able to run it like I did this year due to college starting, but if anyone else would like to take over the project, I'd love to hand it over to them and help out when I have time.
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Unread 04-14-2014, 01:24 PM
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Re: Announcing the 2013 December Design Competition

I would be more than glad to create a game animation if this continues!
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Unread 11-21-2015, 12:11 PM
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Re: Announcing the 2013 December Design Competition

Bump (sorry) for similarities between this and Recycle Rush.
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