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Helical motor/shaft coupler

by mojomoney, published

Helical motor/shaft coupler by mojomoney Nov 17, 2010

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Description

A device to attach a motor shaft to another shaft to allow it to drive the shaft and compensate for misalignment.

Recent Comments

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Ha, thanks, I was referring to it's ability to export something usable by openscad.

My googlefu is not THAT bad...
Hole is for 5mm shaft for NEMA 17. The clamp feature is sized for #8 Machine screws as I have access to a multitude of SAE sized screws/bolts and not metric.
Solidworks web page is here solidworks.com/

I'm quite happy with it but it is expensive, $6,000 to 10,000 depending on the version you get.

The student version is in the hundreds though.

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License

Public Domain
Helical motor/shaft coupler by mojomoney is licensed under the Public Domain license.

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What machine did you use to print the one in the picture? Not quite makerbotable, I just ended up with a solid cylinder. Have you ever used openscad? A parametric file would be handy so you could have different sized shaft openings.
I modeled it in Solidworks and printed it on a Dimension SST1200ES. It's a soluble support machine, so overhangs are not an issue.
I'm getting a lot closer to having it work out on the makerbot. I have access to a dimension elite, but I've done hardly any tweaking of settings since I got the mk5 plastruder.

Increasing the size by 150% seemed to be key, the coil bands at normal size were less than 2 passes wide which is why they all stuck together.
At 150% I've almost got it working on the makerbot. I'm gonna give it one more try today with only 1 shell path and see if I can do it at the original size.

Just curious, is the stl file for 5mm shaft and m5 bolts?

As for solid works, I know absolutely nothing and a quick google search returned nothing valuable.
Hole is for 5mm shaft for NEMA 17. The clamp feature is sized for #8 Machine screws as I have access to a multitude of SAE sized screws/bolts and not metric.
Solidworks web page is here solidworks.com/

I'm quite happy with it but it is expensive, $6,000 to 10,000 depending on the version you get.

The student version is in the hundreds though.
Ha, thanks, I was referring to it's ability to export something usable by openscad.

My googlefu is not THAT bad...
I would post pictures, but the license you chose doesn't allow me to "I made one".

I'm giving it a 2nd shot, it seems like the key to printing these gaps on a makerbot is to have it laying down on the bed.
I changed the license so you should be able to do whatever you want with it. The Solidworks model is available to change parametrically. I'm not familiar with Openscad, is there a parametric file format that I can share that is compatible?
Awesome design. Great idea. Can't wait to try printing it.
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