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Unread 30-01-2014, 09:13
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Re: Practical 3D printed parts

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Originally Posted by Chadfrom308 View Post
We print out battery holders. They have our logos on them and they have strain reliefs for the wires. Plus, it makes them way easier to hold and are plenty strong.
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
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Unread 30-01-2014, 09:18
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Re: Practical 3D printed parts

Quote:
Originally Posted by eddie12390 View Post
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
I tried looking for a picture, but I couldn't find one. I'll post a picture of one tonight or tomorrow, as well as maybe the STL file
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Unread 30-01-2014, 10:00
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Re: Practical 3D printed parts

We've printed a few things that have come in handy.

First, we printed some brackets designed to hold 4 pneumatic storage tanks on the robot. It was a pretty nice solution overall, and allowed us to stack them much easier than we otherwise would have been able to (half hour to design, then a day worth of printing instead of several hours of manual work to make something similar by hand).

Then one of our students came up with a design for a winch that really looks awesome. We used a winch last year as well, but that was all hand made and had issues occasionally where the strap would jump off and get tangled. I plan to get some pictures of that setup and the new setup for this year to show a comparison - your mind might be blown at how big a difference it is, and again it saves work hours on the robot! The winch last year, for all its simplicity, took a long time to actually get together. This year, all the complexity is designed in half an hour and printed!
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Unread 30-01-2014, 10:08
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Re: Practical 3D printed parts

We used ours to print shaft collars... lots and lots of shaft collars...
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Unread 30-01-2014, 12:16
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Re: Practical 3D printed parts

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Originally Posted by Jhultink View Post
We used ours to print shaft collars... lots and lots of shaft collars...
Us, too. Delicious, lightweight, very very purple hex shaft collars!
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Unread 30-01-2014, 12:25
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Re: Practical 3D printed parts

We're printing a radio / camera / sensor tower that mounts onto the corner of our drive frame. We will still probably protect this with an overall polycarbonate shroud once everything is on the robot.
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Unread 30-01-2014, 13:30
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Re: Practical 3D printed parts

11's kids printed off what they're calling "Talon Towers," just a simple way to stack Talons for some space savings.

https://www.facebook.com/photo.php?f...type=1&theater

http://i.imgur.com/LfiXK5t.jpg
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Unread 30-01-2014, 14:37
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Re: Practical 3D printed parts

Quote:
Originally Posted by Akash Rastogi View Post
11's kids printed off what they're calling "Talon Towers," just a simple way to stack Talons for some space savings.

https://www.facebook.com/photo.php?f...type=1&theater

http://i.imgur.com/LfiXK5t.jpg
Slightly off topic, but I had one of our electronics guys ask me about how well that would work without fans. Have you run that setup (or similar) before, and if so, id you notice a performance difference between the Talons with fans or Talons without fans?

(I'm not an electronics guy, so I'm just repeating his questions).
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Unread 30-01-2014, 14:59
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Re: Practical 3D printed parts

We printed several hex shaft couplers for the roller intake. Some of them broke, so we made more with tighter tolerances, more flexible material (Nylon) and higher infill. We'll see if the new ones break. We'll move to aluminum eventually, maybe.

We've made several encoder mounts, one of which I posted to CD. The rest could be acquired COTS if desired.

Some of the ideas we've had would require a non-linear profile for a roller to roll through as the launcher did its thing, and we'll 3D print them of the linear concepts ever get around to working at all.

LOTS and LOTS and LOTS of hex spacers for the roller intake.

Thought about making a clevis that would rotate a pneumatic cylinder 90 degrees on the tail so it rotates properly while also re-orienting the ports, but found a simpler solution with angle aluminum. For the roller intake, of course. (Can you tell that I led the roller intake subteam? )

Will poke at making pneumatic storage tank mounts since they tuck away nicely at a spot between the rollers (when they're down) and the frame.
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Unread 30-01-2014, 16:34
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Re: Practical 3D printed parts

Quote:
Originally Posted by cadandcookies View Post
Slightly off topic, but I had one of our electronics guys ask me about how well that would work without fans. Have you run that setup (or similar) before, and if so, id you notice a performance difference between the Talons with fans or Talons without fans?

(I'm not an electronics guy, so I'm just repeating his questions).
I've heard 0 issues about Talons, regardless of them having fans or not. I don't think our students are concerned, but we will keep an eye out for any issues.
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Unread 30-01-2014, 16:41
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Re: Practical 3D printed parts

Quote:
Originally Posted by cadandcookies View Post
Slightly off topic, but I had one of our electronics guys ask me about how well that would work without fans. Have you run that setup (or similar) before, and if so, id you notice a performance difference between the Talons with fans or Talons without fans?

(I'm not an electronics guy, so I'm just repeating his questions).
We ran stacks of 3 talons without fans last year on a 6 cim drivetrain through 3 competitions and eliminations at all of them with minimal time between matches with no issues.
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Unread 30-01-2014, 17:46
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Re: Practical 3D printed parts

How durable are 3D printed parts? Our team doesn't use them.
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Unread 02-02-2014, 16:10
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Re: Practical 3D printed parts

Quote:
Originally Posted by eddie12390 View Post
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
The yellow one is last year's and the purple one is this year's new, more beefy, battery handle

We are still working on the printing. We are trying to make it more easy to print
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Unread 02-02-2014, 16:33
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Re: Practical 3D printed parts

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Originally Posted by Chadfrom308 View Post
The yellow one is last year's and the purple one is this year's new, more beefy, battery handle

We are still working on the printing. We are trying to make it more easy to print
That's great! I thought of making something similar for our batteries a few weeks ago, but there is no room for them on our robot...
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Unread 02-02-2014, 18:35
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Re: Practical 3D printed parts

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Originally Posted by Chadfrom308 View Post
The yellow one is last year's and the purple one is this year's new, more beefy, battery handle
How do you put it on and take it off the battery? If I'm interpreting what I see correctly, it looks like you need a screwdriver (and likely a nontrivial amount of time).
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