Go to Post I always wondered what would happen if two robots mated. - Greg Needel [more]
Home
Go Back   Chief Delphi > FIRST > General Forum
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
  #17   Spotlight this post!  
Unread 30-01-2003, 10:31
Ken Leung's Avatar Unsung FIRST Hero
Ken Leung Ken Leung is offline
Dare to Live!
FRC #0115 (Monta Vista Robotics Team)
Team Role: Mentor
 
Join Date: May 2001
Rookie Year: 1999
Location: Palo Alto, California
Posts: 2,390
Ken Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond reputeKen Leung has a reputation beyond repute
Send a message via AIM to Ken Leung
Ok, here is a few thoughts that got me started...

First of all, assuming these are gear reductions, all the gear ratios got to slow down the speed of the motors instead of speeding them up. Looking at the specs of the motors, I think it make sense that this gear box reduce the ratio so the motors will output more torque. So, the first gear in the stage are the small ones at the bottom, and the 2 little shafts sticking out are attached to the motors instead of outputing motor power.

Then the shaft on the next stage get 1 reduction, and depending if the gear is keyed, it can be a output shaft or not. If not, then its just a support for the gear box, where the whole thing just hang on top of that bar, and the gears spin freely. but looking at the 1st picture: http://www.chiefdelphi.com/forums/pi...&quiet=verbose , there is a bearing for that shaft, meaning it actually spin instead of stationary. So that's the first output shaft right there, just really long.

Then keep going down the reductions, the small gears in the 2nd shaft is the drive gear for the top shaft #3. In the 2nd picture, I can see that the big gear on #3 is supposed to engage to it, so that means the pneumatics can at least slide the gears on #3 to mesh to the smaller gears on #2 on either position. Looking at the length of the piston on #3, I have to assume that the stroke length is more than that little gap that allow the gears on #3 to move, so the pneumaticc piston actually pops out on #3 toward the right. So that's the 2nd output shaft: the pneumatic piston that spin and extend and retract.

Then the 4th shaft on top is the final stage of the gears, and its supposed to be engaged to the #3's gears usually, looking at picture #2. http://www.chiefdelphi.com/forums/pi...&quiet=verbose

Same with output shaft 2, it is a pneumatic piston that pops out toward the right, and spin. Looking at the space inside that box, it looks like the gears on #4 doesn't touch gears on #2, and is stationary. The only way to engage them is to slide the gears on #3 to mesh with the gears on #4.


So, this probably isn't a gear box for the drive train. You can put 2 motors on it, but it won't output different speed on each side. All it's capability is spin the really long output shaft #1, and extend the pneumatic pistons while getting them to spin at the same time. The long output shaft spin the fastest, then the piston on #3 the second, and then the piston on #4 the slowest.

Anyway, that's all I can think of about this gear box. Without seeing what it outputs to, there's no telling what evil task it can do for your robot .
__________________
Hardware Test Engineer supporting RE<C, Google.

1999-2001: Team 192 Gunn Robotics Team
2001-2002: Team 100, 192, 258, 419
2002-2004: Western Region Robotics Forum, Score Keeper @ Sac, Az, SVR, SC, CE, IRI, CalGames
2003-2004, 2006-2007: California Robot Games Manager
2008: MC in training @ Sac, CalGames
2009: Master of Ceremony @ Sac, CalGames
2010: GA in training @ SVR, Sac.
2010-2011: Mechanical Mentor, Team 115 MVRT
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Congrats to Ken Leung Rich Wong Thanks and/or Congrats 15 01-04-2003 02:36
Another Hint???? M. Faticanti General Forum 2 02-01-2003 10:01
Ken Leung and LA archiver 2001 1 24-06-2002 02:10
A hint of things to come... archiver 2001 0 24-06-2002 01:12
Hey, Hey, Ken Leung archiver 2001 0 24-06-2002 00:28


All times are GMT -5. The time now is 11:06.

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