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2" 3D printed, carbon fiber reinforced 1/2 Hex mecanum intake rollers.
07-02-2017 15:13
Max BoordHave you guys tested these? I have always wanted to try 3d printing mecanum intake wheels but have not found a design/ filiment combination that I thought would hold up to robot to robot contact.
07-02-2017 15:15
asid61Very cool! I would love to see some durability tests on these just because the material around the rollers looks a bit thin, but for intake purposes they look very capable.
07-02-2017 15:38
Clayton SummerallWhere did you buy the rollers? Would you mind sharing the CAD file?
07-02-2017 16:20
Cothron Theiss
07-02-2017 16:53
s-neffAwesome! What was the manufacturing process for the rollers? Mind sharing the material choice? It's awesome that it looks like you don't have to run a brass sheath on the inner surface.
Are the lock nuts really <1/4" across? I haven't been able to source anything less than 1/4" wide off McMaster, which has made packaging the fasteners difficult. Or do you just accept that the nuts break the plane of the wheel, since it's only an intake for a round game piece?
07-02-2017 21:51
Kevin Sevcik
If you're printing your own vectored intake wheels anyways, you should totally experiment with the roller angle to see what shoves the balls sideways the fastest. If I'm understanding Ether's mecanum kinematics paper and reasoning correctly (questionable propositions, both) then making the rollers more perpendicular should move the balls sideways faster. Maybe. Completely perpendicular or parallel both obviously fail, so maybe 45 is the fastest, but it just feels like something else should be.
07-02-2017 22:08
Cothron Theiss|
If you're printing your own vectored intake wheels anyways, you should totally experiment with the roller angle to see what shoves the balls sideways the fastest. If I'm understanding Ether's mecanum kinematics paper and reasoning correctly (questionable propositions, both) then making the rollers more perpendicular should move the balls sideways faster. Maybe. Completely perpendicular or parallel both obviously fail, so maybe 45 is the fastest, but it just feels like something else should be.
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Yesterday 14:52
itsjustmrb|
Have you guys tested these? I have always wanted to try 3d printing mecanum intake wheels but have not found a design/ filiment combination that I thought would hold up to robot to robot contact.
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Yesterday 14:54
itsjustmrb|
Awesome! What was the manufacturing process for the rollers? Mind sharing the material choice? It's awesome that it looks like you don't have to run a brass sheath on the inner surface.
Are the lock nuts really <1/4" across? I haven't been able to source anything less than 1/4" wide off McMaster, which has made packaging the fasteners difficult. Or do you just accept that the nuts break the plane of the wheel, since it's only an intake for a round game piece? |