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Unread 02-02-2014, 16:21
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pic: Team 2471's ball shifting spool
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Unread 02-02-2014, 16:22
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Re: pic: Team 2471's ball shifting spool
Did you guys manufacture that yourself? That's a legit piece of engineering!
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Unread 02-02-2014, 16:41
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Re: pic: Team 2471's ball shifting spool
I second that. Looks completely professional, I would have guessed it was off the shelf. Care to share how you made it?
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Unread 03-02-2014, 03:57
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Bryce2471 Bryce2471 is offline
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AKA: Bryce Croucher
FRC #2471 (Team Mean Machine)
Team Role: Mechanical
  
Join Date: Feb 2013
Rookie Year: 2007
Location: Camas, WA
Posts: 424
Bryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud ofBryce2471 has much to be proud of
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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