Parameterized Vertical Carriage for Kossel

by Chillance, published

Parameterized Vertical Carriage for Kossel by Chillance Apr 23, 2013

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Edit: I have now added a GT2 belt clamp so the motors can be in the middle as well! I also added some simple boolean variables in the .scad file to enable/disable what to use. What I find work here is to put in both ends into the clamp, and then tighten it with a m3 screw. Seems to hold it quite well! Then, to tighten the belt, you just move the top up.

This is the paramereized version of the Cerberus pup vertical carriage you can find here: http://www.youtube.com/watch?v=Ypm4oHYM4Uo and here: http://www.youtube.com/watch?v=_Mn4U0srZGg

I got the original from Steve (thanks Steve!), but wanted to add belt support as well. So I figured I do it with OpenSCAD. There really shouldn't be much to change, as it should be pretty tweaked and ready to use as is. Still, I like having it in .scad format.

Works superb on Openbeam! The Dual 623 V Roller from http://3d.grabercars.com/?product=11-delrin-roller-with-608-bearing-fits-1515-series-extrusion-from-8020-net-copy really makes this excellent!

I also love the tightener design.

Furthermore, I added support for belts, using a clamp. Since I have a few of those Openbeam brackets, I also needed to put that belt on the side, which is why I also have that "belt holder" which can be screwed on the side and can be seen in the images attatched here. So, with this, it's up to you to use fishing line, or a belt. And, the belt can be either in the middle or on the side using the belt holder.


Well, print it. Then you need a bunch of M3 screws. And, you need 3 Dual 623 V Rollers per carriage, ending up in 9 in total for all three.

I also have a nut between the plastic and the dual 623 V roller to add some necessarily spacing.

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Nice part! - I am trying to mod this for 2020 V slot mini Kossel. Setting main_cube_width = 42 got the size about right but I still need to find how to make the roller wheel mounts larger to accept tap for M5 threads and add back thru hole for spectra line mounting

I added a GT2 belt clamp so the motors can be in the middle now as well guys.

Well done man, well done! :)

Awesome, thanks for releasing this! I bought Steve's last W wheels which I'm going to use as single V wheels. Having this in SCAD to go w/my original-style Kossel's 45-degree-rotated corners will be great, as I'm sure I'll need to make a few mods to the spacing.

Cool! I just hope it will be easy to modify for you then, as some parts in the code ended up hardcoded. :)

I ended up needing to modify this, mainly to reduce the body thickness by a bit over ~1mm, to get the rollers to grab. Rather than make a deriv on Thingiverse, for now I've just posted my changes at https://github.com/brandonheller/pup_carriagehttps://github.com/brandonhell.... I need to fix the nut traps and add an extension to trigger the limit switch before I can use it. Thanks for posting the original!

Awesome! Do you think you could merge that with the latest .scad I uploaded here? I added a GT2 belt clamp, and some booleans to avoid extra holes if not needed.

Sure, but you might want to remove the nut trap commits, as they were too small. Also, Git is the way to go to make it much easier to pull in changes - have you used it?

I just put my latest here: https://github.com/Chillance/pup_carriagehttps://github.com/Chillance/p...

I like your comments and updates, so if you want to merge those, please do.

I try to do small, atomic commits and to separate out refactorings from parameter changes so that it's easy for others to pull in just what they like. So if you like the changes, just pull them in, via 'git merge' or a sequence of 'git cherry-pick' commands.