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Parametric Flexible Coupling

by MarcoAlici, published

Parametric Flexible Coupling by MarcoAlici Jan 23, 2013

Description

This is a parametric OpenSCAD implementation of the Flexible Coupling created by Gyrobot (http://www.thingiverse.com/thing:38678).

UPDATES:
2012-01-24: I made this part "Customizer compliant".

Recent Comments

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yeah thats what i though. I wanted to make a print-n-go zheng3 style penny balista that used some sort of printed spring, just for swankiness value.

Probably it's limit here in PLA for it's diameter/number of ribs etc :-
http://thingiverse-production....

However I will soon print one out in the flexible Arnitel Eco 1.75mm which is being delivered soon. I will post pictures when printed. I suspect it will be really flexible but not very good for direct drive applications.

I have also made one out of metal for a much tougher requirement.

How flexable is this thing exactly? Could it function like a spring or rubberband (though i suspect a less durable one)?

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License

GNU - GPL
Parametric Flexible Coupling by MarcoAlici is licensed under the GNU - GPL license.

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Instructions

Open the .scad file and change the parameter according to your needs (see image as a reference for dimensions):

D1 = OUTER DIAMETER
D2 = INNER DIAMETER
H1 = TOTAL HEIGHT
H2 = BASE HEIGHT
N = NUMBER OF FLEXIBLE ELEMENTS
D3 = SCREW HOLE DIAMETER
Dnut = NUT HOLE DIAMETER
Hnut = NUT HOLE THICKNESS
B = FLAT SHAFT THICKNESS

A 3D stl file is provided, generated using the default values.

Comments

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CrazyJaw on Feb 4, 2013 said:

How flexable is this thing exactly? Could it function like a spring or rubberband (though i suspect a less durable one)?

Gyrobot on Feb 4, 2013 said:

Probably it's limit here in PLA for it's diameter/number of ribs etc :-
http://thingiverse-production....

However I will soon print one out in the flexible Arnitel Eco 1.75mm which is being delivered soon. I will post pictures when printed. I suspect it will be really flexible but not very good for direct drive applications.

I have also made one out of metal for a much tougher requirement.

slamzee on Jan 27, 2013 said:

Is there a way to make the two openings different sizes. For example to connect my steeper motor to larger threaded rod.

MarcoAlici on Jan 27, 2013 said:

Someone started from where I ended: that's the power of freedom. Have a look at here: http://www.thingiverse.com/thi...
:-)

Gyrobot on Jan 23, 2013 said:

Thank you sir, just as I started to get to grips with openSCAD ;-)

MarcoAlici on Jan 24, 2013 said:

Me too: it's really funny!

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