Lead Screw locked - URGENT - vis motrice bloquée

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Maximus
Posts: 1
Joined: Sat Jan 02, 2016 12:20 pm

Lead Screw locked - URGENT - vis motrice bloquée

Post by Maximus » Sat Jan 02, 2016 12:48 pm

(en français plus bas)

Greetings Makers,

Bought the M2 last summer. After a lot of tweaking, managed some decent prints and then had to change house.

Upon unpacking the M2, hook everything up, test the motors:

X and Y work fine upon manual impulse and digital control.

The problem:

lead screw: Completely locked.

Symptoms

Manual impulse: Nothing. I cannot physically raise the platform with my hand using reasonable amount of force.Nothing at all.

Digital control: the motor whines but absolutely no movement (not surprising since I could not raise it by hand). The motor whines the appropraite length of time and stops when I manually press the stop at the top of the column.

Potential causes:

The lead screw and columns were, despite the plastic covering, layered in dust and crap. I of course cleaned and greased them before testing.
However, could the dirt have gone into the Z-axis motor and cause it to jam? Or elsewhere that I could not visually check for dirt?

I could only, by gripping the screw and turning it with a lot of strength, get it to turn a few degrees. Quite worrisome.


I absolutely need this printer this weekend to print many many pieces for, ironically, a presentation to promote 3D printing for modelling. I am currently in a remote country so not sure I could order spare parts in time, unless I take a hop to Europe.

I don't understand how it could lock to the point I cannot raise it by hand. That's a lot of force to resist.

Should I take apart the motor? check for dirt? I would rather not to that as it entails taking apart the machine.

Although I would normally take the time to contact the excellent Makergear tech support, I don't have that time at the moment and need a solution today.

Thank you and I apologize for the time factor.

Happy new year!


Le Problème: La vis motrice est complètement bloquée.

Je n'arrive pas à lever la plateforme par main. Le moteur fonctionne de façon audible mais n'arrive pas à bouger la plateforme non plus (bien évidemment puisque je ne pouvais pas la lever moi-même).

J'ai récemment déménagé la machine et j'ai remarqué qu'il y avait beaucoup de poussière sur les colonnes et la vis motrice (que j'ai nettoyé avant de tester) donc ça pourrait être de la saleté qui s'est infiltrée dans le moteur au point de le figer?

J'ai absolument besoin de la machine cette fin de semaine pour imprimer plusieurs pièces pour une présentation importante. Je suis en Afrique donc je ne pourrais pas commander une pièce à temps pour la recevoir.

Merci et bonne année!!

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insta
Posts: 2007
Joined: Tue Sep 16, 2014 3:59 am

Re: Lead Screw locked - URGENT - vis motrice bloquée

Post by insta » Sat Jan 02, 2016 6:08 pm

Look at the picture in this post: viewtopic.php?f=7&t=2423&start=10#p13568

That bracket on the underside holds the Z rods in place. If it gets shifted around (like if the box got dropped in shipping [like what happens when it gets shipped overseas]), that will cause some serious binding.

Loosen the two silver screws slightly (the ones parallel to the rods that go from the underside of the bracket into the frame), and with the bed at the bottom of the travel, wiggle the Y axis front to back a few mm (the Y axis is the fat slab of aluminum that the Y rail is bolted to). The idea is to use the Y axis itself to position the rods in the optimal location.

Once the rods move a little bit, you should be able to move the bed up and down much more easily.
Custom 3D printing for you or your business -- quote [at] pingring.org

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