3d printable ball bearing
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bbq_01_asm.stp
250 KB
V1
by
Alexander Papadopoulos
##1320182389##
over 1 year ago
bbq_01.stl
3.9 MB
V1
by
Alexander Papadopoulos
##1320182462##
over 1 year ago
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Ball Bearing printed in 3D printer Dimension elite for project i have in Technological Educational Institute of Crete to
find out the capabilities of printer .
Minimal printable (Ball Bearing that works) size using
layer thickness: 0.1778[mm]
scale: 0.182
material main: ABS+
material support: ABS+
Comments:
Good stuff
:)))
Yeah I am really N-Joying our rapid proto class
so interesting :)))
We printed this part on our U-Print. Layer thickness is .25mm, so we used .182(.25/.1778)=.26 for our scale factor.
Whiskers of ABS caused the balls to be stuck initially in the matrix ring. They were easily freed with a tool.
The result works fine. It rotates freely and the interior parts are captive. The inner and outer have +/- .030" wiggle with respect to one another.
i cannot guarantee for another scale . but I'm sure if you play with numbers and see at what lowest scale you can print a sphere (if you go lower the object wont look like a sphere and wont be possible for ball bearings) that about how low scale you should try to go.
about the inner and outer rings wiggle i believe it will be lower if the model is bigger but then again you must play with tolerance. but again in assembly it wasn't a problem at all because i used 3D printed snap rings witch hold the ball bearings in the right position.
about the rotation "whiskers" will be always there (at least on printer i worked) you can use silicone sprav for plastics, it will make it to rotate smoothly or reduce any plastic to plastic friction.
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