Helical motor/shaft coupler

by mojomoney, published

Helical motor/shaft coupler by mojomoney Nov 17, 2010

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

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

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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 http://www.solidworks.com/http://www.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.