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Unread 31-08-2013, 12:42
Kevin Kolodziej's Avatar
Kevin Kolodziej Kevin Kolodziej is offline
Operator in 100+ matches
AKA: Yngwie Kamen's roadie
FRC #1675 (Ultimate Protection Squad)
Team Role: Engineer
 
Join Date: Apr 2002
Rookie Year: 1999
Location: Milwaukee, WI
Posts: 629
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Re: 3d printers and robots

1675 did some experimenting with 3D printing last fall and I'm sure we'll continue that this year. We were mostly experimenting with gears. Most of our tests help up just fine - it was when we hastily reduced material near the hub that we had a failure.

On our 2013 competition bot, we used 3D printed plates for custom gearboxes for our drive train. Our milling and pocketing capabilities are limiting so the ability to print two plates in 3 hours greatly increased our production. We had 8 printed plates and assembled gearboxes by the end of week 1 (normally we're looking at week 3 for assembly). Never had a problem with the plates through 5 competitions so far.

We also printed a guidewheel for our climbing mechanism, but the printer ended up having a breakdown after 7 hours of printing so the actual part on the robot is a lathed piece of acetyl donated by a local machine shop.

Previous to that (2006), one of our mentors printed a fully functional set of mecanum wheels for a Vex robot.

Our school has a Dimension 1200 BST and Stratasys donated some material to the team this year.

Stratasys also donated some polycarbonate printed gears for us that we briefly used to increase the speed of our robot (but ultimately removed in favor of more torque).
__________________
Team 71: 1999, 2000 (Driver), 2001-2002 (Driver, Animator) // Team 1064: 2003 (Co-founder, Coach), 2004 (Coach) // Team 1714: 2006-2007 (Mentor, Coach)
Team 1675: 2005-2007 (Mentor, Coach), 2008 (Mentor), 2009-2017 (Mentor, Coach)
FLL: '04 (Judge), '05 (Ref), '06 (Ref), '07 (Ref), '08 (Judge, Ref), '09 (Judge), '10 (Ref), '16 (Judge Advisor) // Ref: '05 (IN, IRI), '06 (IN, IRI), '07 (IN, IRI), '08 (WMR, Curie)
WI RPC: 2006 - 2016 // FRC Inspector: '07 (WI), '08 (WI, IL), '09 (WI, IL), '10 (WI, CMP), '11 (WI, IL, CMP), '12 (WI), '13 (Northern Lights)
2007 WI Woodie Flowers Award Finalist // 2011 Wisconsin Regional Outstanding Volunteer // 2011/2013 Midwest Regional Chairman's Award
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