bearings
A friend told me about these designs:
https://www.thingiverse.com/thing:4821342
https://www.thingiverse.com/thing:2375124
One requires Fusion 360 and the other only provides STL files. Has
anyone tried to create similar objects in a parameterized fashion using
OpenSCAD?
I am told that they work really well.
Jon
The second one says "ball bearings fail". Is that a real issue for
manufactured bearings? (They all seem to be ball bearings.) Or just a
problem with 3d printed bearings?
I haven't seen bearing designs in OpenSCAD. I did notice the second one
includes a video on how to make your own bearings in fusion 360. Presumably
one could watch that to learn how to build the design in OpenSCAD.
jon_bondy wrote
A friend told me about these designs:
https://www.thingiverse.com/thing:4821342
https://www.thingiverse.com/thing:2375124
One requires Fusion 360 and the other only provides STL files. Has
anyone tried to create similar objects in a parameterized fashion using
OpenSCAD?
I am told that they work really well.
Jon
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My guess:
module template(){
square()
circle()
}
module balls(){
rotate_extrude()
template(); //right half of it anyway
}
module housing(){
rotate_extrude()
difference(){
translate(x=inner_d) square();
template();
}
}
module angular_bushings(){
difference(){
cylinder();
housing();
for(i=[0:n-1])
balls();
}
Thats the basic pseudocode I would use, and then the million dollar
question is how you use scale and/or resize as a function of a parameter
"tolerance", in order to arrive at a bearing that works. Good luck.
On Sun, May 30, 2021 at 8:54 AM adrianv avm4@cornell.edu wrote:
The second one says "ball bearings fail". Is that a real issue for
manufactured bearings? (They all seem to be ball bearings.) Or just a
problem with 3d printed bearings?
I haven't seen bearing designs in OpenSCAD. I did notice the second one
includes a video on how to make your own bearings in fusion 360.
Presumably one could watch that to learn how to build the design in
OpenSCAD.
jon_bondy wrote
A friend told me about these designs:
https://www.thingiverse.com/thing:4821342
https://www.thingiverse.com/thing:2375124
One requires Fusion 360 and the other only provides STL files. Has
anyone tried to create similar objects in a parameterized fashion using
OpenSCAD?
I am told that they work really well.
Jon
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On Sunday 30 May 2021 08:53:48 adrianv wrote:
The second one says "ball bearings fail". Is that a real issue for
manufactured bearings? (They all seem to be ball bearings.) Or just
a problem with 3d printed bearings?
I haven't seen bearing designs in OpenSCAD. I did notice the second
one includes a video on how to make your own bearings in fusion 360.
Presumably one could watch that to learn how to build the design in
OpenSCAD.
jon_bondy wrote
This one I tried as priint in place, failed dead solid. Probably the
printers fault.
This one I haven't tried. But it sure looks promising, and should not be
that hard to do in OpenSCAD. Doing the bearings OTOH, would be an
assembly job in opescad, and the constant jumping from one to the next
by the printer might be a major cleanup since you'd need quite a few.
I cheated a bit and made ball bearings for all the bearings in a harmonic
drive. Out of crosman bb's. Worked surprisingly well. Including the 3
wide wrapped around an excentric armature.
One requires Fusion 360 and the other only provides STL files. Has
anyone tried to create similar objects in a parameterized fashion
using OpenSCAD?
I am told that they work really well.
They do indeed.
Jon
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Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
Sorry, this should have gone to the list. <<<
I've done some "print in place" items that have worked surprisingly
well, but you need a printer that is well calibrated and can print
normal items cleanly with a good surface finish and minimal "stringing",
especially if the inter-item gap is very small.
Good luck,
Dave
On 30/05/2021 16:34, Gene Heskett wrote:
On Sunday 30 May 2021 08:53:48 adrianv wrote:
The second one says "ball bearings fail". Is that a real issue for
manufactured bearings? (They all seem to be ball bearings.) Or just
a problem with 3d printed bearings?I haven't seen bearing designs in OpenSCAD. I did notice the second
one includes a video on how to make your own bearings in fusion 360.
Presumably one could watch that to learn how to build the design in
OpenSCAD.jon_bondy wrote
A friend told me about these designs:
This one I tried as priint in place, failed dead solid. Probably the
printers fault.
https://www.thingiverse.com/thing:2375124
This one I haven't tried. But it sure looks promising, and should not be
that hard to do in OpenSCAD. Doing the bearings OTOH, would be an
assembly job in opescad, and the constant jumping from one to the next
by the printer might be a major cleanup since you'd need quite a few.
I cheated a bit and made ball bearings for all the bearings in a harmonic
drive. Out of crosman bb's. Worked surprisingly well. Including the 3
wide wrapped around an excentric armature.
One requires Fusion 360 and the other only provides STL files. Has
anyone tried to create similar objects in a parameterized fashion
using OpenSCAD?I am told that they work really well.
They do indeed.
Jon
OpenSCAD mailing list
To unsubscribe send an email todiscuss-leave@.openscad
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Cheers, Gene Heskett
Perfect! Thank you!!
On 5/30/2021 1:54 PM, TLC123 wrote:
https://www.thingiverse.com/thing:2437268
https://www.thingiverse.com/thing:2437268
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