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Unread 03-02-2014, 03:57
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Bryce2471 Bryce2471 is offline
Alumnus
AKA: Bryce Croucher
FRC #2471 (Team Mean Machine)
Team Role: Mechanical
 
Join Date: Feb 2013
Rookie Year: 2007
Location: Camas, WA
Posts: 424
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Re: pic: Team 2471's ball shifting spool

Quote:
I second that. Looks completely professional, I would have guessed it was off the shelf. Care to share how you made it?
Thanks, I wish we had the machines capable of making that in house. Thankfully we have a mentor who has access to a really nice lathe and knows someone with a really nice wire EDM machine.
The assembly has three major parts: the spool, the ball carrier, and the shifter rod.

The ball carrier is turned to its outer shape on a lathe, the holes for the ball bearings and a key way are cut on a mill.
The shifter rod is turned to the correct outer dimensions then the end is threaded.
The spool is turned on a lathe and a profile for interacting with the bearings is wire EDM'd.
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FLL Team Future imagineers
2010 Oregon State Championships: Winners
2011 International Invite: First place Robot design, Second Place Robot Performance
FRC Team Mean Machine
2012 Seattle: Winning alliance
2013 Portland: Winning alliance
2013 Spokane: Winning alliance
2014 Wilsonville: Winning alliance
2014 Worlds: Deans List Winner
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