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bearings

J
jon
Sun, May 30, 2021 12:35 PM

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

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
A
adrianv
Sun, May 30, 2021 12:53 PM

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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To unsubscribe send an email to

discuss-leave@.openscad

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 > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to > discuss-leave@.openscad -- Sent from: http://forum.openscad.org/
AD
Ari Diacou
Sun, May 30, 2021 1:08 PM

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


OpenSCAD mailing list
To unsubscribe send an email to [hidden email]
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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 > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to [hidden email] > <http:///user/SendEmail.jtp?type=email&email=discuss-leave%40.openscad> > > > ------------------------------ > Sent from the OpenSCAD mailing list archive <http://forum.openscad.org/> > at Nabble.com. > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >
GH
Gene Heskett
Sun, May 30, 2021 3:34 PM

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:

https://www.thingiverse.com/thing:4821342

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


OpenSCAD mailing list
To unsubscribe send an email to

discuss-leave@.openscad

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.

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: > > > > https://www.thingiverse.com/thing:4821342 > > 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 to > > > > discuss-leave@.openscad > > -- > Sent from: http://forum.openscad.org/ 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>
D
Dave
Sun, May 30, 2021 4:20 PM

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:

https://www.thingiverse.com/thing:4821342

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 to

discuss-leave@.openscad
--
Sent from: http://forum.openscad.org/

Cheers, Gene Heskett

>>> 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: >>> >>> https://www.thingiverse.com/thing:4821342 >>> > 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 to >>> >>> discuss-leave@.openscad >> -- >> Sent from: http://forum.openscad.org/ > > Cheers, Gene Heskett
T
TLC123
Sun, May 30, 2021 5:54 PM
https://www.thingiverse.com/thing:2437268 -- Sent from: http://forum.openscad.org/
J
jon
Sun, May 30, 2021 6:54 PM

Perfect!  Thank you!!

On 5/30/2021 1:54 PM, TLC123 wrote:

https://www.thingiverse.com/thing:2437268
https://www.thingiverse.com/thing:2437268

Sent from the OpenSCAD mailing list archive
http://forum.openscad.org/ at Nabble.com.


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To unsubscribe send an email to discuss-leave@lists.openscad.org

Perfect!  Thank you!! On 5/30/2021 1:54 PM, TLC123 wrote: > https://www.thingiverse.com/thing:2437268 > <https://www.thingiverse.com/thing:2437268> > ------------------------------------------------------------------------ > Sent from the OpenSCAD mailing list archive > <http://forum.openscad.org/> at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org