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Rigid Press-Fit Couplings for Z-Axis

by wildseyed, published

Rigid Press-Fit Couplings for Z-Axis by wildseyed Dec 29, 2012

Description

This design has been floating around in my sandbox for a few months, and I haven't found the time to test it out yet. Might as well get it out there, in case it can help anybody out.

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Excellent! This is most impressive, considering the difficulty of the task, how much further along have you gotten? Have you successfully attached it to a motor shaft? Did it hold up?

Also, when you say 'glue', do you mean resin?

My first test of the long coupling was disappointing. Not sure, but I suspect my vice causes a slight bit of slanting when I press fit the part to the shaft.of the motor.

Earlier, I mounted it in my lathe with a length of threaded rod and everything war perfectly round. Maybe I should just drill out the M5 side, and use glue, instead of press fitting.

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Instructions

If your Z-Axis rods are straight, and you can get a decent print of this coupling, it might be possible to eliminate any z-wobble in your 3D printer.

The key is to print it slow. Let me know if you try this. I'll try it myself before the new year.

I have posted both 5/16" and M8 versions.

Comments

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BoomerangEnergy on Jan 11, 2014 said:

Excellent! This is most impressive, considering the difficulty of the task, how much further along have you gotten? Have you successfully attached it to a motor shaft? Did it hold up?

Also, when you say 'glue', do you mean resin?

wildseyed on Dec 30, 2012 said:

My first test of the long coupling was disappointing. Not sure, but I suspect my vice causes a slight bit of slanting when I press fit the part to the shaft.of the motor.

Earlier, I mounted it in my lathe with a length of threaded rod and everything war perfectly round. Maybe I should just drill out the M5 side, and use glue, instead of press fitting.

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