D-PATCH

taconite · 10 May 2020, 12:21

Added a cover for the electronics compartment and fixed the bed. The bed sits on 1 Standoff and 2 Balls, so that the system is constraint but thermal expansion is allowed.

gtj0 · 10 May 2020, 14:03

@taconite Nice work! I have no experience with Deltas but I'm definitely interested in how the tool changer works out.

Danal · 10 May 2020, 16:19

FANTASTIC. I was thinking about going down this road...

You've posted a lot of info and pics, and I will be looking at them very carefully, meanwhile TELL US MORE!!!

This is incredible. Fantastic. Superlative. Nifty. I'm running out of words (at least without cheating on the web) and I hope I've conveyed just how cool this is.

Bravo!

Now, to look at your pics!!

Danal · 10 May 2020, 16:20

Would you be willing to post the tool macros?

taconite · 11 May 2020, 18:20

@gtj0 thank you :), I will keep updating this post with news

@Danal Thank you very much for your kind words. It feels good to hear, that people like it
What else would you like to know?

I have not completed the tool macros for this machine, yet but I can upload the ones for the prototype

taconite · 8 Jun 2020, 20:18

Hey Guys,

I uploaded some videos of the first prints here.
Furthermore I added a video of a manual tool change
https://www.youtube.com/user/Taconiteable/videos

Best Regards
Adrian

oliof · 8 Jun 2020, 21:58

That's really cool, I missed your original post! The first tool changing delta I am aware of is from 2013 (see https://www.youtube.com/watch?v=f60YuBrHRCA -- it's actually a pancake printer as shown in https://www.youtube.com/watch?v=t3O19n_JqXU).

We've come a long way in the mean time! Can you give some details on your locking mechanism? It seems way more involved than a bunch of magnets.

taconite · 10 Dec 2020, 17:19

@oliof Yeah you are right - I found these videos, too, when I started to look into tool changing Delta printers, but not many infos out there.

About your question - yeah a little more brain juice went into the design of the locking mechanism.
So it is basically a bayonet lock that is driven by a Bowden cable and reset by a bunch of springs

The pieces of the bayonet that lock the tool are angled so a downward force is created by the rotation of the bayonet. It is locking onto 3 zylindrical pins that are placed 120° apart from each other so that the locking is uniformly

oliof · 11 Jun 2020, 10:56

Pretty cool! I hope you publish your design one day as this would be an interesting setup for three printers down my ideas to build (orthogonal tripteron, or sextupteron). But that's a couple years out optimistically speaking (-:

taconite · 11 Jun 2020, 11:46

Thanks that you like it! Yeah as soon as this version will be finished I'm thinking about publish the files under CC-BY-NC so that the community can use it

BTW: I really love your unconventional tripteron design!

oliof · 11 Jun 2020, 11:52

The design is not mine though. That credit goes to Evan Callicoat.

taconite · 23 Jun 2020, 07:58

Started working on the Tool-Changer itself

taconite · 13 Jul 2020, 17:12

Hey guys,

worked a little bit more on the printer.
I got the first automatic tool change (even if it needs a little more tuning), but it's a first step in the "proof of concept" direction (which I already did with the first prototyp).

https://youtu.be/OE60ZKuhTJ0

fšk · 18 Jul 2020, 00:22

@taconite that's a cool design. Where did you get the tapered metal parts?

taconite · 23 Jul 2020, 15:16

@fšk thank you
I designed the tool so, that it utalizes standard stock material. The tapered part was done by a friend of mine on a standard lathe.

taconite · 18 Aug 2020, 18:34

Tool Change Scripts

taconite · 22 Aug 2020, 17:53

Tool Changing of two tools can be seen here:
https://youtu.be/nLvNUum48fg

upcoming is the first multi-material print

JoergS5 · 22 Aug 2020, 18:15

@taconite that's a nice tool changer!

HebigT · 24 Aug 2020, 20:05

@taconite Hey any thoughts about preventing heat-creep after a (hot) tool is placed back on the carousel?

taconite · 27 Sept 2020, 17:05

@JoergS5 Thank you
@jpomo10 of course ;). There are multiple options:

set the stand-by temperature so low, that a equilibrium is reached
(+ no additional fans, - long heat up time)
one fan for each tool in parking position
(+ sufficient cooling, - lot of fans with lots of noise)
one bigger fan with a fan-duct to direct the air to the heat sinks of the tools in parking position

For now I have no fans at all. So after the first prints I had not a lot of heat creep and no problems with jams. But I guess I will move on with option 3

BTW: I posted another video of the first dual color print on youtube