Digital designs for real, physical objects. A Universe of Things!

Flexible shaft coupling

Created by
twotimes
Created on Jan 3, 2011
Featured on Jan 5, 2011

Doing the final checks of on the Z-rider and there was still this nagging very slight wobble. Seems my universal joint (actually called a double cardan joint) was a bit too floppy. I reprinted it and didn't ream out the holes on the new one and the little wobble away. Since it seemed to be variable on who assembles it, I came up with this.

Before someone asks, the hexagonal one didn't print as clean, and the square one was a too weak. If someone asks, I'll upload them.

This coupling connects a 5mm shaft to an 8mm shaft. (or a stepper to an M8 rod)

Here's a video:
flickr.com/photos/48982649@N07/5324751443/