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Don't ya just love 80/20? 
Discussion
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25-02-2006 02:06
Nuttyman54
Re: pic: Fun With Extrusion!
YES!!! we used it this year for the first time, and absolutly LOVE it. sooo easy to tension chain, move things that don't quite fit, etc... See you guys at nats!
25-02-2006 02:08
Chriszuma
Re: pic: Fun With Extrusion!
Holy crap, how long did it take you to tesselate those like that?
25-02-2006 04:01
Clark Gilbert
Re: pic: Fun With Extrusion!
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Originally Posted by Chriszuma
Holy crap, how long did it take you to tesselate those like that?
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25-02-2006 09:10
Eugenia Gabrielov
Re: pic: Fun With Extrusion!
Makes me think of Dance Dance Revolution. Arrows arrows arrows!
25-02-2006 15:26
DarMagi
Re: pic: Fun With Extrusion!
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Originally Posted by Clark Gilbert
This would make an awesome wallpaper...
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25-02-2006 18:51
Bill_Hancoc
Re: pic: Fun With Extrusion!
How do you use it to tension chain???
just curious because sliding the motors is a lil slower
25-02-2006 19:06
Cory
Re: pic: Fun With Extrusion!
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Originally Posted by Bill_Hancoc
How do you use it to tension chain???
just curious because sliding the motors is a lil slower |
25-02-2006 20:17
JVN
Re: pic: Fun With Extrusion!
One of my least favorite robotics related memories:
Tapping the ends of 15ish 80-20 pieces for our 2004 robot with some poor student (he was being punished, and I was setting an example for the other students).
What poor soul had to do all these?
-JV
25-02-2006 20:20
ewankoff
Re: pic: Fun With Extrusion!
This was also 1676's first year using the extrusion.
Being on Mechanical and working with stuff i can say that this stuff is very easy to work with.
The only thing we had a problem with was with one of our drill bits for the universal connectors. The vice we had it in span around and broke the small part off. That was the last time we forgot the lube. 
25-02-2006 21:22
Nuttyman54
Re: pic: Fun With Extrusion!
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Originally Posted by Cory
If you're using pillow blocks bolted to the T-slot, and not a through hole in the extrusion, you can slide them in the slots.
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25-02-2006 21:41
Cory
Re: pic: Fun With Extrusion!
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Originally Posted by Nuttyman54
this is exactly what we did. every loop of chain has at least one sliding component. kjhobin of Team 555 alerted me that 80/20 does not recommend this method, as the t-nuts are liable to loosen and slide, but we haven't had this problem yet. Another option would be to add a tensioner sprocket to the t-slot and just slide that.
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As long as you check your wheels and other critical structural members somewhat regularly, you should be fine.
25-02-2006 21:42
TriggsJr
Re: pic: Fun With Extrusion!
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Originally Posted by JVN
One of my least favorite robotics related memories:
Tapping the ends of 15ish 80-20 pieces for our 2004 robot with some poor student (he was being punished, and I was setting an example for the other students). What poor soul had to do all these? -JV |
come on John......just power tap them with the milwaukee best part of dynamic brakes
25-02-2006 21:51
Bill_Hancoc
Re: pic: Fun With Extrusion!
im still having trouble visilizing this (prolly cause it late at night since ive been up since early)but does somebody have a pic of this or a paint drawing?
25-02-2006 21:58
DonRotolo
Re: pic: Fun With Extrusion!
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Originally Posted by ewankoff
This was also 1676's first year using the extrusion.
Being on Mechanical and working with stuff i can say that this stuff is very easy to work with. The only thing we had a problem with was with one of our drill bits for the universal connectors. The vice we had it in span around and broke the small part off. That was the last time we forgot the lube. |
Yes, and we ALL learned something that day.
Don
25-02-2006 22:09
Cory
Re: pic: Fun With Extrusion!
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Originally Posted by Bill_Hancoc
im still having trouble visilizing this (prolly cause it late at night since ive been up since early)but does somebody have a pic of this or a paint drawing?
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The pillow blocks on the wheel shown have bolts going through them vertically, which screw into T-nuts in the slot in the chassis. By sliding the entire wheel assembly away from the center of the robot, the chain can be tensioned without a separate device.
25-02-2006 22:49
Nuttyman54
Re: pic: Fun With Extrusion!
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Originally Posted by Bill_Hancoc
im still having trouble visilizing this (prolly cause it late at night since ive been up since early)but does somebody have a pic of this or a paint drawing?
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26-02-2006 08:06
skimoose
Re: pic: Fun With Extrusion!
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Originally Posted by JVN
One of my least favorite robotics related memories:
Tapping the ends of 15ish 80-20 pieces for our 2004 robot with some poor student (he was being punished, and I was setting an example for the other students). What poor soul had to do all these? -JV |
The sad part is we didn't end up using them on the robot after all that work!
26-02-2006 10:06
phrontist
Re: pic: Fun With Extrusion!
Do you have a higher-res version of this? I'd love it as a background...
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