My Delta Toolchanger - Finally printing

itslikeboo

@fcwilt
Before Jubilee implemented a more robust locking mechanism, it used a more simple cable driven system, you can see here: https://www.youtube.com/watch?v=ibJpjYAcjaM

On the delta, there's a pulley mounted to a motor that sits on the frame. Like the above, spectra line is fed from the motor through the spring guides, but through the effector, to the inner torus which can rotate. When the motor turns, it rotates the torus.

fcwilt

@itslikeboo

You mean the silvery spring looking things going off screen?

Could you post a picture showing the other end?

Frederick

itslikeboo

@fcwilt
Right.
Let me know if this clears anything up.

fcwilt

@itslikeboo

Thanks.

All is clear.

Frederick

o_lampe

@itslikeboo
Congrats, that looks clean and simple!
One thing I don't grasp is the hotend fan: It would sit on the outer effector, right?
When you park the tool, will there be another fan to take over cooling the heatsink?

@cosmowave
Hi, do you think I could use your vacuum pump to replace the magnets? The weight of the tool will hold it down anyway, so the pump wouldn't fight against gravity. (Which would be the case in my design)

itslikeboo

@o_lampe
Thanks! The Mosquito comes with a small hotend fan that's attached to the heatsink. So it follows the tool when it's picked up and parked. You can make it out in the video. For tools that need a fan that can't fit through the inner diameter of the effector's torus, there would need to be another solution.

cosmowave

@o_lampe said in My Delta Toolchanger - initial iteration:

Hi, do you think I could use your vacuum pump to replace the magnets? The weight of the tool will hold it down anyway, so the pump wouldn't fight against gravity. (Which would be the case in my design)

You have to try it!

itslikeboo

@o_lampe
What's this vacuum pump?

o_lampe

@itslikeboo
It's similar to this
Cosmowave borrowed me his pump to test how good it would suck on our common steelballs on Delta effectors. I wanted to get rid of the magnets (Haydn Huntleys Mag-arms are very good, but heavy)
It's yet untested, but if it'd work, your locking mechanism would be much easier.

itslikeboo

@o_lampe
Very cool! I went towards traditional joints for that very reason. Although, I will admit there might be a bit of play in mine. Keep me posted if you go down that route!

fcwilt

@o_lampe said in My Delta Toolchanger - initial iteration:

Haydn Huntleys Mag-arms are very good, but heavy

Do they add enough weight to make a significant difference in performance?

Frederick

o_lampe

@fcwilt
Six magnets with steelballs weight 85gr. That's almost the same as my direct drive extruder. For Bowden extruders, it's even more significant.
With input shaping we can iron out a lot of ringing, so it's less of a problem I guess.

[OT]
In 2018 I started experimenting with Delrin ball effectors and rubber bands.
Maybe, if I replace/support the rubber band with vacuum, it'll hold stronger. I'd go for six Delrin balls now.

itslikeboo

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.

itslikeboo

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.

itslikeboo

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

breed

@itslikeboo I love this project. Hope to do something similar on one of my anycubic predators except with two smart effectors. Keep up the good work.

bberger

@breed same here

itslikeboo

@breed
Thanks!
I spent a bit of time trying to figure out how to create a tool changer with the smart effector. Ultimately, couldn't really get anywhere. But I'd love to see it.

breed

@itslikeboo

oliof

@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.