Go to Post Based on my experience coaching basketball and robotics, there is no doubt in my mind that if a sports coach receives $x then a robotics coach should, too. - dtengineering [more]
Home
Go Back   Chief Delphi > Technical > Motors
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 01-06-2009, 04:10 PM
matt91 matt91 is offline
Registered User
FRC #1779 (G-F.O.R.C.E.)
Team Role: Leadership
 
Join Date: Jan 2008
Rookie Year: 2007
Location: Boston, MA
Posts: 28
matt91 is an unknown quantity at this point
Send a message via AIM to matt91
tough box bearing problem

After assembling one of our motors the bearings keep falling out. Has anyone had this problem/does anyone have any tips?
__________________
Cost of 6 Jolt drinks for 3 days: $72
FITST Registration Fee: $6,000
Cost of Coffee for build season: $94.54
Cost of Programming a robot: Sanity
Cost of spenging 3 days whith people who are just as crazy as you: Priceless

Team 1779- South Boston Robotics
G-F.O.R.C.E.
Generations of Futuristic Original Rational Conceptualized Engineering
  #2   Spotlight this post!  
Unread 01-06-2009, 04:11 PM
Sam2197's Avatar
Sam2197 Sam2197 is offline
Registered User
FRC #2197 (Las Pumas)
Team Role: Driver
 
Join Date: Jan 2008
Rookie Year: 2006
Location: Indiana
Posts: 113
Sam2197 will become famous soon enough
Re: tough box bearing problem

which bearing? you may have put them in wrong. the flange is suppose to go on the insides of the plates
  #3   Spotlight this post!  
Unread 01-06-2009, 09:48 PM
ahamilton3 ahamilton3 is offline
Registered User
FRC #1779
 
Join Date: Jan 2009
Location: south boston
Posts: 1
ahamilton3 is an unknown quantity at this point
Re: tough box bearing problem

thanks sam. i had posted that under a team mate's name earlier and then figured it out. you were absolutely right too. thanks for the help.
  #4   Spotlight this post!  
Unread 01-06-2009, 10:02 PM
robert.hatchett's Avatar
robert.hatchett robert.hatchett is offline
Registered User
FRC #1262 (STAGGS)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 2004
Location: Martinsville, VA
Posts: 12
robert.hatchett is just really nicerobert.hatchett is just really nicerobert.hatchett is just really nicerobert.hatchett is just really nice
Re: tough box bearing problem

In case other teams are having fit issues not related to orientation I offer this tip.

In some situations, manufacturing tolerances are exceeded and the bore is too large for the bearing.

If this is the case, you can take a center punch/hammer and make one ore more small impressions in the bore and/or outer race of the bearing. This will deform the local surface enough to "snug" up the fit.
__________________
Robert Hatchett
Mechanical Engineer
Team 1262 Mentor
  #5   Spotlight this post!  
Unread 01-06-2009, 10:30 PM
Gdeaver Gdeaver is offline
Registered User
FRC #1640
Team Role: Mentor
 
Join Date: Mar 2004
Rookie Year: 2001
Location: West Chester, Pa.
Posts: 1,356
Gdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond reputeGdeaver has a reputation beyond repute
Re: tough box bearing problem

I would not deform the bearing or the plate. There are many glues that would be better to correct a loose fit. Do not allow the glue to penetrate the bearing.
  #6   Spotlight this post!  
Unread 01-07-2009, 12:09 AM
Kyle Love's Avatar
Kyle Love Kyle Love is offline
Support STEM Education
FRC #3301 (Jay County Robotics)
Team Role: Teacher
 
Join Date: Apr 2004
Rookie Year: 2004
Location: Portland, IN
Posts: 3,072
Kyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond reputeKyle Love has a reputation beyond repute
Re: tough box bearing problem

It should be just fine if you put dimples around the edges, or use loctite or other type of adhesive to hold them in. Definitely make sure that they are in the correct orientation.
__________________

Kyle Love
Teams I've been on:
Team 45 - The TechnoKats - Student/Leader/Driver 2004-2007
Team 1646 - Boiler Precision Guessworks - Mentor 2007-2011
Team 3301 - Jay County Robotics - Teacher 2011-Present

  #7   Spotlight this post!  
Unread 01-07-2009, 01:08 PM
lynca's Avatar
lynca lynca is offline
Andrew Lynch
FRC #2587 (DiscoBots)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2001
Location: Houston, TX
Posts: 1,608
lynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond reputelynca has a reputation beyond repute
Send a message via AIM to lynca
Re: tough box bearing problem

Quote:
Originally Posted by Sam2197 View Post
which bearing? you may have put them in wrong. the flange is suppose to go on the insides of the plates
Last year our team put the flanges on the outside and the bearings do fall out !

Mentors make sure to verify the students work !
__________________
History: 624 - Cryptonite --> 118 - Robonauts --> 2158 - AusTIN CANS --> 2587 DiscoBots
Bio: Andrew Lynch "How I Work" ---- LinkedIn , Facebook, Twitter
Closed Thread


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
[OCCRA]: Robot Controller (electrical box) problem Kettering OCCRA Q&A 1 10-20-2008 09:03 AM
TOUGH BOXES team550 Kit & Additional Hardware 13 03-05-2008 03:45 PM
Tough Box with 2 CIM's Andrew Y. Motors 8 02-12-2008 08:57 AM
Bearing problem Templar1396 Technical Discussion 2 01-20-2007 01:08 PM
Future of Education: Tough Choices or Tough Times Rich Kressly Math and Science 0 12-21-2006 09:10 AM


All times are GMT -5. The time now is 11:48 AM.

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