View Single Post
  #19   Spotlight this post!  
Unread 13-04-2013, 01:28
nerdherdmember's Avatar
nerdherdmember nerdherdmember is offline
#letsdothis
AKA: Harrison (That kid with the blue hat)
FRC #0422 (Mech Tech Dragons)
Team Role: Alumni
 
Join Date: Mar 2012
Rookie Year: 2010
Location: Virginia
Posts: 25
nerdherdmember is a jewel in the roughnerdherdmember is a jewel in the roughnerdherdmember is a jewel in the roughnerdherdmember is a jewel in the rough
Re: pic: 2175 Wheel v2

Quote:
Originally Posted by Botwoon View Post
Yep, 3d printed. We print all of our parts at home out of ABS with a uprint from Dimension. It doesn't save any real time, but it saves man hours which is helpful considering the tiny team we had this year. It might take ten hours to print a couple of wheels, but all those hours are passing while we're asleep .

The ABS portion of the bearing block is captured with two long screws between the two plates, and the frame tube is captured between the two plates. Tensioning is accomplished using that cam sitting next to it on the table (the cam is bolted onto the frame tube next to the block, rotating it either pushes the bearing block outwards or allows it space to move inwards).
Do you ream/bore the ABS after printing, or is the print within tolerance for a press fit already (if you press fit, you could be using the plates to hold it in place I guess)? What's the resolution/layer size of that printer? Is it comparable to the makerbot replicator 2? How do you manufacture the cam? Sorry for all the questions, seeing your robot fly off the bridge with 3d printed wheels was what really planted the seed of 3d printing in my mind last year, so being able to get responses is very nice.
Reply With Quote