View Single Post
  #21   Spotlight this post!  
Unread 03-08-2008, 11:21
vivek16's Avatar
vivek16 vivek16 is offline
Whoa! college pilot.
AKA: vivek
FRC #2264 (trojan robotics)
Team Role: Alumni
 
Join Date: Jan 2007
Rookie Year: 2007
Location: plymouth, minnesota
Posts: 1,227
vivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond reputevivek16 has a reputation beyond repute
Send a message via AIM to vivek16 Send a message via MSN to vivek16
Re: Securing gears on shafts

Quote:
Originally Posted by AdamHeard View Post
He has already told us that a clearance issue exists (like in the AM toughboxes). The larger gear of gear cluster A (arbitrary name) is too close to the shaft of the large gear of gear cluster B for any spacer or collar to be added (The small gear of cluster B is on the same shaft as A). Please correct me if I am wrong, but this is what I am imagining.

A roll pin like in the AM gearbox is the least labor intensive solution I can imagine that doesn't have the possibility to move. I have used the press on retaining clips like Travis suggested, but they have the possibility of drifting (You could still use them, just be prepared to verify the alignment often). Snap rings would also work very well, have a lower profile than roll pins, and look better. They do require machining that is a tad more difficult, but still is a pretty simple machining operation.
Yep, that's exactly right. I'm using AM gears and that is exactly the clearance problem I'm having. Thanks for clarifying.

It seems like roll pins would be the best way for me since they are cheap and we have a local grainger warehouse that supplies them.

thanks, Vivek

P.S. I had no clue how e-clips worked before this thread. Thanks for the information.
__________________
"we don't build robots, we build people"