Trinity Labs 1 Aluminatus - z axis stepper thrust bearing holder.
by kenaaker, published
Description
This is a coaxial mounted thrust bearing mount for the Z axis steppers of a Trinity Labs Aluminatus printer. I mounted it to studs that run through the deck of the printer. There are clearance pockets on the bottom for the nuts that hold the stepper in place. The coupler can be adjusted through the front and rear openings.
The design is in OpenSCAD and uses parms for most things.
I've added an update that uses a true thrust bearing, in particular a 7x13x4.5 miniature thrust bearing. I added a screw on cap to retain the bearing.
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Hi, The stepper motors are in the same place. I just replaced the screws that went through the top plate with studs that I made by cutting the heads off some m3x10mm screws. Then I put a nut on the stud that screwed down against the top plate to hold the stepper in place. The pockets on the bottom of the mount are there to clear the nuts that are holding the stepper motor in place. Then, the mount goes over the studs, and is held in place with m3 washers and nuts. Ken
I printed these for my Aluminatus and am realizing that I have no idea how the stepper motor is mounted - from your picture it appears the coupler is sitting a lot lower than mine, which makes me imagine that the stepper is possibly mounted lower (i.e. not flush against the alu top plate). Could you explain how and and what parts you used to mount the motors?
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I printed these for my Aluminatus and am realizing that I have no idea how the stepper motor is mounted - from your picture it appears the coupler is sitting a lot lower than mine, which makes me imagine that the stepper is possibly mounted lower (i.e. not flush against the alu top plate). Could you explain how and and what parts you used to mount the motors?
Hi, The stepper motors are in the same place. I just replaced the screws that went through the top plate with studs that I made by cutting the heads off some m3x10mm screws. Then I put a nut on the stud that screwed down against the top plate to hold the stepper in place. The pockets on the bottom of the mount are there to clear the nuts that are holding the stepper motor in place. Then, the mount goes over the studs, and is held in place with m3 washers and nuts. Ken
I used the 608 version with a few modifications that my buddy did and it works great on my plus v2 hybrid!
I'm glad that worked for you. I hope there wasn't too much hassle making the changes. I've fussed at other peoples source code for decades.
I am currently without a 3D printer, but I need a pair of these for my (non Aluminatus) printer. Could I hire you to print a pair of these and ship them to me? I'm in the US. Thank you!
Sure, I can do that. Do you want the original version that takes the common ball bearing (608) or the current version that takes a VXB miniature thrust bearing?
DO you have the files for a 608 bearing? that would be great if you could send it or point me in the right direction. Thanks
I've put an updated version of the 608 bearing version of the coupler, in the download files list. The files start with update_1Z. The OpenScad file is also there, if anyone wants to tinker with the idea.
There's an internal support structure added for the hollow interior and for the recesses for the nuts on the stepper motor studs. Once the mount has printed, I put the mount over a block with a hole in it and drive the support structures out with a punch. (Crude, but I haven't broken one yet).
I'm not clear which version makes the best sense, to be quite honest. I am modifying my 3D printer, and the choice is mostly driven by how I would machine the ends of the leadscrews and therefore determine which bearing size I would need. There are couplings that go from 5mm (stepper motor shaft) to 8mm, so that would make the 608 bearing size the simplest because there would only be one diameter to turn down on the leadscrew. Does that make sense? Would you email me offline at bravinneff [at] http://gmail.com?gmail.com? Thank you!
Well, it took me a while, but I finally found the "Edit this thing" button. I removed one of the redundant scad files.
I don't know why it included the scad file twice. They should be the same.
Ah I see, makes perfect sense now. Thanks.