Wheel contest
 

Ladies and Gentlemen, start your CAD software!

I was randomly designing wheels in Inventor, and I was thinking about how stylish it would be possible to make some wheels. Then I thought, why limit the styles to my own brain. So here's a challenge:

Design in Inventor a wheel. There'll be 2 size classes: 6 inch and 3 inch. The 6 inch wheel must be underneath .8 pounds in weight, and the 3 inch must be under .4 pounds. Post a picture or link to a picture of a wheel you designed in CAD. The most stylish wheel will win at the end!

Re: Wheel contest
 

With tread or without?

Re: Wheel contest
 

Not too prefrential on tread, so if you don't want to bother, don't. As far as weight, tread is not included.


Also, here's my submission: A 6 inch beauty weighing in at .720 lbs

Re: Wheel contest
 

6" OD 0.470 lbs

[edit]CAD model replaced with rendered part

Re: Wheel contest
 

What's the prize? :p

Re: Wheel contest
 

yah... you better send us some cake or something...

Re: Wheel contest
 

Here's my submission, throwin' it back ol' school style with gold spokes (18).

Re: Wheel contest
 

Maybe someone will get inspired by these hubless wheels?

Re: Wheel contest
 

lol, i was working on an old fashioned spoke style as well. old school. but a little different. Maybe ill CAD it out

Re: Wheel contest
 

We're ridin' spinners, we're ridin' spinners
They don't stop
We're ridin' spinners, we're ridin' spinners
They don't stop :p

-7.5" pneumatic rim (squishes down to 6")
-Gold plated... :cool:
-Spinners... :cool:
-Embossed with our logo... :cool:
-If only we had the $$$

Re: Wheel contest
 

My entry:


6" OD (not including tread)
0.75" wide
3/4" hex for drive
0.746 lbs (no tread)
The base wheel is made completely out of fiberglass, but a layer of gold foil is glued on with an epoxy of some sort.

Re: Wheel contest
 

720 lb??????

Re: Wheel contest
 

Well DUH! don't you see how BIG it is???

Re: Wheel contest
 

actually, if you look real close, there's a decimal before the 7. :D

Re: Wheel contest
 

Here's my old school wooden wheel.



Maybe not the most practical...

Re: Wheel contest
 

Those have got to be the koolest looking rims I have ever seen! Should make them real rims to put on a car... would have your Logo everywhere you drive :cool:

Re: Wheel contest
 

Very cool

Animation???

Re: Wheel contest
 

Here's an animation i made for Hachiban VIII's wheel.
Here's the GIF


and here's the video but photobucket makes it look horrid.
http://smg.photobucket.com/albums/v5...motionblur.flv

Re: Wheel contest
 

OK, so maybe it's not Inventor or a robot wheel...I used CATIA to do this about a month ago.

Re: Wheel contest
 

Random design for fun. 3 inches; the iProperties box says it's .189 lbs...





The tread should have more raised lines on it between the FIRST logo imitations, but the emboss was taking forever to calculate the way it is now, so I left that out for now.

Re: Wheel contest
 

Wow, that's hot. You've got to tell me how you did the FIRST logo on the curved surface like that.

Re: Wheel contest
 

After revolving the inside part of the tire, I created a sketch normal to the tire's surface. Then I drew up the FIRST logo. (It's just an imitation of the logo; I guess you could trace a sketch on top of the real logo image to make it exact. All those dimensions are there just because I wanted it to be fully constrained.)



Then I made a rectangular pattern of the logo, inside the same sketch, making sure that the width of the pattern did not extend past pi * diameter of tire surface.



Then I embossed the sketch, choosing a raised emboss and "Wrap to Face" with the tire surface.



You could also emboss one instance of the logo and circular pattern the Emboss as a feature.

Re: Wheel contest
 

Gah. Catia looks more bizarre even than Pro/E.

Re: Wheel contest
 

I gave up learning Catia once i got my hands on Inventor, lol.

This isn't really a wheel, it's a Cog, and it's not done yet but I figured what the heck.

Re: Wheel contest
 

This is my first real object made in CAD... So if you actually know CAD, please PM me and give me some tips on making "real-life" objects, (ie. wheels, robotics parts, etc...) So here it is.




-3" Chrome Wheel
-0.5" Wide
-(Supposedly...) 1.5lb
-3/4" Hex Drive

So it's more of a work of art, so I guess you could call it a "Couch Signature" it's one of a kind, never to be reproduced again... LOL

Re: Wheel contest
 

How does the inside of the wheel attach to the outside? Am I missing something? Also, 1.5lbs is quite heavy for a wheel that size. (in FRC anyhow) What is the material? Also, you may not want to put a zillion holes in it. That will take a while to drill. And how do you plan to make the cutouts? Laser? Waterjet? You can't mill that. The milling cutter has some radius to it. The machinists I know like to use a 3/8" diameter tool at the smallest. Makes life easier.

Re: Wheel contest
 

Yeah I know, I am just learning how to use CAD, so this wheel design is definitely not realistic to use. Didn't really think about how this would be machined or anything. But if you have any CAD tips, please do PM me.

Thanks for the "constructive" criticism.

Re: Wheel contest
 

One of the best things you can do to improve your CAD is to learn to machine. Once you know the constraints of your machines, you know how crazy you can get with your designs. Plus, it makes it easier on your machinists if you design something that can be machined easily.

Re: Wheel contest
 

Yeah, my wheel is definitely NOT something to consider for production...

Re: Wheel contest
 

not really anything that special but I like it.... .67lbs for the 6 inch

Re: Wheel contest
 

Old Faithful -

Re: Wheel contest
 

Two words: stress concentration

Re: Wheel contest
 

Wheels that don't break were never part of the contest....I would have to analyze these before I built them (I probably wouldn't) but i still think they look pretty.:D

Re: Wheel contest
 

Sorry - guess I shoulda read the rule before posting!

OK, so here's my "keep it stone-age, stupid" entry:



Six of these babies should solve a lot of toppling bot problems!

Re: Wheel contest
 

What program did you use for the stress calculations? Thats kinda useful.

Re: Wheel contest
 

Sorry - I just linked a picture from Google for an engineering company's site. I can't claim to be an expert in the stess analysis field - I just play one on TV, er CD, er - okay, so call me a poser!

Re: Wheel contest
 

Inventor 10 and up does stress analysis.

Re: Wheel contest
 

does is a relative word....if you are going to use any FEA software please understand that there is more to it then clicking "analyze" and getting the answer. You must understand mesh size, load positioning, load types, etc. FEA can be great but it can also give you a false sense of security...kinda like a radar detector; it will detect a police officers but won't tell you where they are.

Re: Wheel contest
 

If one understands mesh, load positioning, etc. (which I don't :) ) can Inventor's stress analysis feature be used to get accurate results?

Re: Wheel contest
 

I needed something stronger than our typical omniwheels because they'll be cantilevered and exposed in the design I'm working with now.


There's no reason wheels can't show a bit of team spirit :)

Re: Wheel contest
 

I never got Inventors stress analysis to work quite right. I prefer CosmosWorks (a plugin for Solid Works). Inventor will output to ANSYS, though. That probably wont be much help to you now, but maybe when you go to college and there's network licenses :)