Best posts made by itslikeboo

Hey everyone. Finally found some time to iterate on my delta. Hope you like it! The effector and tool use a kinematic coupling and there are magnets that apply the coupling force. I was hoping to avoid magnets but they've been solid for me. Before this, I had just a static coupling and a manual toolchanger and I'm not really sure I'd go back to any other way.

Kudos to the Jubilee tool changer project. I fashioned its cable drive system to the effector to offload the weight. I wanted to make this as simple, cheap, and as easy to upgrade from a normal delta as possible.

Here's a link to it setting a tool down and picking it back up:
https://www.youtube.com/watch?v=hrbC58hZFl4

Edit:
Added a second tool:
https://www.youtube.com/watch?v=bYUtPNZ3ag4

Edit:
Printing:
https://www.youtube.com/watch?v=AtBPeQnealA

Work has been busy but I've finally got around to fooling around with dual color printing. Print quality is superb. Some of the changes themselves are a little rough but consistent enough for the most part!

Here's a quick video: https://www.youtube.com/watch?v=AtBPeQnealA

Added a second tool:
https://www.youtube.com/watch?v=bYUtPNZ3ag4

This tool gets knocked around a bit during changes even though it's a mirror of the first tool and I'm not positive why. But the tool seems like it seats just as firmly as the first. Still need to mess around.

I should mention, I do plan on uploading all the files to thingiverse. My Fusion 360 skills are abysmal and I need to do some cleanup before I put them up.

@oliof said in My Delta Toolchanger - Finally printing:

@breed I would worry that that magnetic coupling is not enough to keep the smart effector in place during probing -- otherwise a good first iteration. My worries may be unfounded.

The coupling is strong. So strong that I'll likely never build a delta that's not coupled this way again.
On the other hand, it can be as weak as you'd like it to be. Meaning a nozzle knock into the print not causing layer shifts. Definitely something to investigate.

@breed said in My Delta Toolchanger - Finally printing:

@oliof don't think that will be a prob. I'm more worried about the motors skipping steps trying to separate the balls and magnets. They are pretty stout.

Yes, this is why I opted for the shear motion to disengage. The other worry about a straight pulling is that the stress is felt on the joints of the parking piece that holds the tool. And if that piece moves in the slightest or deforms over time, your tool changes will fail at some point.