Team 95 Hard At Work - 2015

[JamesCH95]

Assembly progressed reasonably well with the robot's chassis.

An inside view of one of the drive pods. I was pleased to learn that a 10-32 Riv-Nut flange does a good job of locating the 7/16 hex sockets in a Vex transmission.



You can almost see the outboard bearing in this picture.



Arm pivot posts and fixed sprockets were installed.



Again, liberal use of Riv-Nuts, though they are difficult to installed near their maximum rated material thickness.



And at least one of the arm shoulder motors was installed.

[JamesCH95]

A number of other parts were made and/or futzed with.

[Kevin Leonard]

Some of that aluminum looks really thick for a game with no defense.
And what kind of arm are you running?

Looks great so far, guys. Keep up the good work!

[JamesCH95]

Originally Posted by Kevin Leonard

Some of that aluminum looks really thick for a game with no defense.
And what kind of arm are you running?

Looks great so far, guys. Keep up the good work!

The main chassis plates are #10awg sheet metal, 0.100in. It is probably a little overkill for this year, but on the other hand we get the material for free and we were able to remove a lot of it for lightening, "trussing it out" as we say. Other 'major' parts, like the belly-pan and deck, are being made noticeably lighter than last year.

We've designed a 4-bar linkage arm with a little more than 180deg of total travel. It will be counter-balanced by two air cylinders and drive by two CIMs + 50:1 Versa planetaries + 16:60 sprocket reduciton.

Also, some over-all chassis pictures finally got uploaded. Around 47lbs as she sits currently.

[JamesCH95]

We've been keeping the mills busy:



And throwing our fair share of money at VexPro:



So many prototypes....

[JamesCH95]

The chassis is coming together though!



And so are some other assemblies.

[GortGortGort]

Wow love you design of your base and that great shop too. Good Job.

[JamesCH95]

Originally Posted by GortGortGort

Wow love you design of your base and that great shop too. Good Job.

Thanks!

[RonnieS]

I love this thread and your designs. Just curious, why a cim and mini cim per wheel? On your hinged mechanism, how did you get that bend in the back off the pivot???
-Ronnie

EDIT: After looking further, It looks like you might of cut that piece that curves around the axel.. I thought it was all one which made my jaw drop.

[JamesCH95]

Originally Posted by Ronnie314

I love this thread and your designs. Just curious, why a cim and mini cim per wheel? On your hinged mechanism, how did you get that bend in the back off the pivot???
-Ronnie

EDIT: After looking further, It looks like you might of cut that piece that curves around the axel.. I thought it was all one which made my jaw drop.

Thanks! We appreciate the kind words!

We figured more power, better drivetrain! I think the CIM+miniCIM might wind up being a little overkill, but I'd rather be stripping weight out then adding it in later, so we planned optimistically for an 8-motor drive.

The gripper mechanism is just a piece of #10awg 5xxx al sheet bent into a c-channel with an OTS hinge from mcmaster bolted to it with some drilled holes and PEM nuts.

[Nathan Streeter]

Lookin' very sweet; can't wait to see the finished product! Wish I was available Week Zero... :-/

[JamesCH95]

Originally Posted by Nathan Streeter

Lookin' very sweet; can't wait to see the finished product! Wish I was available Week Zero... :-/

Thanks, me neither! We're off to Suffield Shakedown and not Chop-Shop's Week 0, it filled up too fast.

[BrendanB]

Originally Posted by JamesCH95

Thanks, me neither! We're off to Suffield Shakedown and not Chop-Shop's Week 0, it filled up too fast.

That's a hike. Sadly we aren't going to either. We never got a notification Week 0 registration was opening.

Not sure what we'll do that weekend but it might be useful to us if we aren't spending 3-4 days getting ourselves ready for a competition but continue focusing on the robot for the first event.

[JamesCH95]

Getting there...

[Addison4300]

I love the idea of doing this post. It's amazing to see how much you guys progress over the season! Great job, Keep it up!!!