Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

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piercet
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by piercet » Wed Feb 03, 2016 12:46 am

Sure, here you go! As a reminder to everyone, I'll post any of the files for these open source modifications in whatever format you want them that I can generate. I usually just post the STL's because very few people were asking for the step files.

Sorry to hear you had difficulty with the endplates and the drill guide. Someone else mentioned the existing drill guide holes were a little tight and did not leave much room for adjustment, so I have posted a new one with wider hole spacing. I'll test it on my spare plate this weekend and see how it fits.

The endplate holes being off baffles me. I can't see why they would have changed that plate. Mine started out life as a Taz 3, so its definitly feasable something changed at some point. I have a second set of plates from ITW that I am using for my mock up frame (so i can take the pictures for the long promised instructions) and it seems to be the same spaceing, no way to know what they came off of though. I'll have to take a look at the cut files for the 5 plates and see why there is a difference. Structurally you should still be in good shape even without those center bolt. I added them in there mainky because every little bit of stability helps, but the tapped bolts on the ends of the main rails is what really locks it all in place.

Sorry about the swiss cheese bed. If it ends up affecting motion, send me a PM and we'll figure it out. The new drill guide should help anyone else in the future.
Attachments
Y Drill plate 2_0_a.stp
(637.22 KiB) Downloaded 45 times
Y motor support bracket.stp
(108.78 KiB) Downloaded 35 times
Y idler support end.stp
(105.85 KiB) Downloaded 75 times
Y mod combined drill guide 2_0_a.stl
(578.6 KiB) Downloaded 42 times

kmanley57
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by kmanley57 » Wed Feb 03, 2016 8:20 am

Might be due to this gap. It is hitting on both ends but the center is not. I can push the brace down to line up with the holes on the metal plate by bending the plastic brace piece down.
20160203_070029.jpg
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by piercet » Wed Feb 03, 2016 8:55 am

Ok, I'll take a look at it tonight and tweak it a bit. Thanks.

mikronano
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by mikronano » Wed Feb 03, 2016 11:52 pm

Thanks for the files! I've already started making some small adjustments for my version and I'll post this weekend my experience with my version of TAZ.

Good news is that I finally managed to find the right spot for my wheels. I don't really like the fact that I had to put them in a trapezoid form. The positions you've chosen are ideal from all aspects and when I had to put mine a bit closer then I knew that I was losing on stability. Especially when a print becomes tall and/or big and the resulting torque puts some extra work on the wheels and the whole bed structure. That's why I already have a new bed coming to put the wheels where they are supposed to go.

But for now it's working and I'm already seeing the difference.

And here is my "swiss cheese" bed plate!
SwissCheeseBedPlate.jpg
Oh, and btw, the Idler Endplate doesn't need any change. The "...2_0c.stl" file worked fine on mine. Just the Motor Endplate needs the modification.

@kmanley57: thank you for the suggestion. I checked it and it doesn't work with me. The M5 bolts hold both Y Endplates (3D and metal) really-really tight and that kind of squeezing is not an option. I use (and love) Colorfabb Ngen. It's ideal for dimensional accuracy, strength and stability. I would also like to use my other "love", the Talmann Alloy 910, but the warpage for this size of a print is a nightmare.
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piercet
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by piercet » Thu Feb 04, 2016 12:21 am

Damnit, they are different, and off by almost 4mm. Alright, This is going to require some thought. I'll also need to check the 4 plates. I'm thinking i am going to just have to make two endplate variants (Turns out the Taz 4 and 5 plates are Identical) for the motor side. Why the hell did they move that? Argh!

Taz 3:
http://download.lulzbot.com/TAZ/3.1/pro ... _motor.PDF
Taz 4:
http://download.lulzbot.com/TAZ/4.0/pro ... tor_rA.PDF
Taz 5:
http://download.lulzbot.com/TAZ/5.0/pro ... 016_rC.PDF
PlateCompare.jpg
Regarding the swiss cheese bedplate, since my holes were in the wrong spot, do you want me to cover the plate cost.

mikronano
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by mikronano » Thu Feb 04, 2016 12:37 am

Please dude don't even think about it!! I really hope you're just kidding. It was my choice and my choice only to do this. And I'll do more, trust me on this. And I'll also "contribute" to this development because I do believe is a major upgrade and it is worth it.

Over the weekend I hope I'll have the X axis also done and then I'll post some more pictures and prints for comparison.
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by piercet » Thu Feb 04, 2016 12:39 am

Alright, I figured I should make the offer at least heh. A new version of the 4/5 motor side endplate is in progress, should be ready in a few minutes.

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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by piercet » Thu Feb 04, 2016 1:13 am

Alright, here are the new machine type specific endplate reinforcements - Motor side. Also a new STEP file since apperently the one I generated earlier didn't have the second set of upper holes.

Note: The Version 3 Taz plate is identical to the previously released 3.0c motor plate. The 4/5 variant is specific to the Taz 4 or 5. If you already printed the 3 version and you have a Taz 3, then yay! If not, here's a nice shiny new one for you to print!

edit: Also, if any official lulzbot type people happen to ever read this post, the dimensions for the radius you show on your Taz 4/5 motor endplate PDF are a tiny bit incorrect. Since you are getting ready to use a similar part in two places on the Taz 6, you may want to check that. The drawing itself is correct, but the value isn't.
Attachments
Taz_V3_ONLY_Openbuild_Y_Endplate_Reinforcement_Motor_3_0_c.stl
(119.42 KiB) Downloaded 38 times
Taz_V4_or_5_ONLY_Openbuild_Y_Endplate_Reinforcement_Motor_3_0_d.stl
(118.93 KiB) Downloaded 51 times
Taz Openbuild Y.stp
(860.54 KiB) Downloaded 38 times

mikronano
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by mikronano » Thu Feb 04, 2016 11:56 pm

Great! Thanks for the updated files. I also noticed that you re-oriented the offset for the upper holes on the Motor Endplate ;) .

I'll work on the new parts this weekend. I've made some thoughts but before I share I'd like to test them first.
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kmanley57
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Re: Adding an Openbuilds Openrail Y axis to a Taz 3/4/5

Post by kmanley57 » Fri Feb 05, 2016 8:26 am

The new 'shiny' new one lines up really good for me on the end plates I have. :)

Tanks piercet!
I will express my CRAZY ideas at any time! So you have been warned. None of my opinions are Lulzbots and can be wrong at any second.

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