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Unread 07-01-2016, 02:00
R.Hutchins's Avatar
R.Hutchins R.Hutchins is offline
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4946 Alpha Dogs 2016 Chassis Design Preview

Alpha dogs 4946 chassis design preview:

Still a lot of work to do. Its a west coast chassis design with 2-cim, 2-speed gearbox under the hood. We have a general idea of where the design is going, we are currently adding bearings, shafts and electronics.

Tried to keep this brief and to the point.

Good luck this season, see you on Einstein.

Alpha Dogs 4946



http://imgur.com/SlWdwE4

http://imgur.com/VQAqzTG

http://imgur.com/X8IwasX

http://imgur.com/M2b2tXq

http://imgur.com/YEzO5VE

http://imgur.com/PZATEdb




https://drive.google.com/open?id=0B6...DhVTk5fMHpnWW8
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Unread 07-01-2016, 09:32
Rob Stehlik's Avatar
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Looks solid! A couple thoughts: It looks like you have a lot of extra space to move the outer wheels further apart. This will improve stability. Also, I'm curious what's inside the big box? Is that a fancy battery holder?
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Unread 07-01-2016, 09:38
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by R.Hutchins View Post
Alpha dogs 4946 chassis design preview:

Still a lot of work to do. Its a west coast chassis design with 2-cim, 2-speed gearbox under the hood. We have a general idea of where the design is going, we are currently adding bearings, shafts and electronics.

Tried to keep this brief and to the point.

Good luck this season, see you on Einstein.

Alpha Dogs 4946



http://imgur.com/SlWdwE4

http://imgur.com/VQAqzTG

http://imgur.com/X8IwasX

http://imgur.com/M2b2tXq

http://imgur.com/YEzO5VE

http://imgur.com/PZATEdb




https://drive.google.com/open?id=0B6...DhVTk5fMHpnWW8
Could you post a STEP file for those of us not using Inventor?
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  #4   Spotlight this post!  
Unread 07-01-2016, 10:28
philso philso is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by Rob Stehlik View Post
Also, I'm curious what's inside the big box? Is that a fancy battery holder?
If that is your battery box, will it be easily accessible once the upper structure is installed?
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Unread 07-01-2016, 11:22
R.Hutchins's Avatar
R.Hutchins R.Hutchins is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

The big box is a battery holder. We have had problems in the past with battery mounting. It is a little excessive and big, it probably will be redesigned.
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Unread 07-01-2016, 11:24
R.Hutchins's Avatar
R.Hutchins R.Hutchins is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Also regarding the accessibility. Depending on the game obviously, it may not be accessible. This is just a starting design and a million things will change before kickoff I guarantee
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Unread 07-01-2016, 11:34
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R.Hutchins R.Hutchins is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

http://imgur.com/LFxWsMS

More of the battery box
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Unread 07-01-2016, 12:41
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by Rob Stehlik View Post
Looks solid! A couple thoughts: It looks like you have a lot of extra space to move the outer wheels further apart. This will improve stability. Also, I'm curious what's inside the big box? Is that a fancy battery holder?
Moving the wheels sounds like a good idea to consider, we'll look into it, thanks! I believe it's currently designed like this so that it would fit a 6" wheel if we decide to go that route, I guess once we finalize what wheel we'll use we can figure that out. Also, as Ryan said the big box is a battery holder, but it's likely not the final design, just a starting point. We're considering changing the top plate to just a strip, maybe forgoing the metal altogether in favor of velcro like we did last year, we're not sure yet. This is just a one of a couple prelim designs we have.


Quote:
Originally Posted by philso View Post
If that is your battery box, will it be easily accessible once the upper structure is installed?
We placed the battery box there just for now with the intent of keeping the CG centered, but we're fairly sure we're going to need to move it to keep it accessible once we know what manipulators and mechanisms we're going to need on the robot. This is again just a starting point, there's a very good chance we're going to be moving it closer to the edge of the robot to make it accessible. Thanks!

Last edited by mreynolds : 07-01-2016 at 12:51.
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Unread 07-01-2016, 13:15
philso philso is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by R.Hutchins View Post
http://imgur.com/LFxWsMS

More of the battery box
If you keep the battery box in it's current orientation (battery on it's side), a Velcro strap stuck to one of the sides may be all you need to retain the battery.
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Unread 07-01-2016, 14:46
M. Boettger M. Boettger is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Here's the .step!
https://drive.google.com/folderview?...&usp=sha ring
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Unread 07-01-2016, 16:20
M. Boettger M. Boettger is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

If you want to check out an interactive 3D model of of the chassis check the link out below. Strongly recommend this this rendering tool.
https://skfb.ly/JMGC
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Unread 07-01-2016, 16:54
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by M. Boettger View Post
If you want to check out an interactive 3D model of of the chassis check the link out below. Strongly recommend this this rendering tool.
https://skfb.ly/JMGC
If you like automatic online 3D rendering, check out GrabCAD. It does version control, syncing across computers, and automatic 3D renderings on all 3D files. Plus it acts as cloud storage for any file type. The whole kit and caboodle. Cannot recommend highly enough.

Btw I also like the robot.
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Unread 07-01-2016, 17:14
M. Boettger M. Boettger is offline
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

I agree GrabCAD is easily one of the best tools for this. The main reason I like SketchFab is the viewer can easily be embedded into a website or application to be viewed on mobile, desktop or VR and is generally great for media purposes. Also it can do mechanical animations.
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Unread 07-01-2016, 17:34
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Re: 4946 Alpha Dogs 2016 Chassis Design Preview

Quote:
Originally Posted by M. Boettger View Post
I agree GrabCAD is easily one of the best tools for this. The main reason I like SketchFab is the viewer can easily be embedded into a website or application to be viewed on mobile, desktop or VR and is generally great for media purposes. Also it can do mechanical animations.
Can vouch for SketchFab, it's very easy to upload individual CAD files and have them embeddable in websites for desktop or mobile. Also you can edit the appearance (color, transparency, reflectivity, etc) of different components of your CAD model from the viewer if certain elements did not import exactly as you like them.
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