Go to Post When everyone is exactly even, who do you look up to for ideas and inspiration? - artdutra04 [more]
Home
Go Back   Chief Delphi > ChiefDelphi.com Website > Extra Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #3   Spotlight this post!  
Unread 19-01-2011, 11:16
Chris is me's Avatar
Chris is me Chris is me is offline
no bag, vex only, final destination
AKA: Pinecone
FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks)
Team Role: Mentor
 
Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,768
Chris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond repute
Send a message via AIM to Chris is me
Re: pic: Shaker 2011 Arm Gearbox (Maybe?)

Quote:
Originally Posted by squirrel View Post
what if you were to use 1/8" stock for the sides? Have you done any loading or deflection calculations that show that the thicker stuff is actually needed?
Nope, none at all. The 1/4" is heavily pocketed on the inside and is mainly used as a shim to prevent that bearing right next to the Planetary from sticking out. I figured that worse comes to worst, a little overkill on such a vital part of the robot wouldn't hurt.

This is designed to interface with a 16 tooth hex sprocket to a 54 tooth sprocket, both available in 25 chain size on AM's website. I think if I did a bit more work we could squeeze a stage of reduction out of the gearbox by using a larger sprocket reduction - I can't figure out how to right now but that could save a lot of weight. Either way, this puts less load on the chain by doing more "work" in the gearbox.

I don't see why this couldn't be integrated into the side of the arm - the only thing is that the 50 / 56 tooth gears are more than 2 inches wide so they'd stick out.

Pocketing the middle 50 tooth gears brings this box down to about 4.2 pounds.
__________________
Mentor / Drive Coach: 228 (2016-?)
--2016 Waterbury SFs (with 3314, 3719), RIDE #2 Seed / Winners (with 1058, 6153), Carver QFs (with 503, 359, 4607)
Mentor / Consultant Person: 2170 (2017-?)
.
College Mentor: 2791 (2010-2015)
-- 2015 TVR Motorola Quality, FLR GM Industrial Design -- 2014 FLR Motorola Quality / SFs (with 341, 4930)
-- 2013 BAE Motorola Quality, WPI Regional #1 Seed / Delphi Excellence in Engineering / Finalists (with 20, 3182)
-- 2012 BAE Imagery / Finalists (with 1519, 885), CT Xerox Creativity / SFs (with 2168, 118)
Student: 1714 (2009) - 2009 MN 10K Lakes Regional Winners (with 2826, 2470)
2791 Build Season Photo Gallery - Look here for mechanism photos My Robotics Blog (Updated April 11 2014)

Last edited by Chris is me : 19-01-2011 at 11:20.
Reply With Quote
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:53.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi