On 3/11/24 03:45, Viesturs Lācis wrote:
Hello!
Last year there was a chance to acquire Biesse machine for a a really
low price so I surprised myself with pretty large and heavy Christmas
present. Just put it in the workshop (where heating is not yet
present) and was waiting for a warmer weather to start retrofitting it
with LinuxCNC.
Since this machine has spent at least several years in a shed - roof
above it but no other protection against outside temperatures, I did
not worry about adding one more winter to it.
I have 2 questions:
1) are there any recommendations for outside temperature when trying
to connect it to power? I want to see the status messages on
servodrives - hopefully they are good (I have done 4 similar retrofits
so I feel familiar with those old drives).
2) my main problem is the rust on linear rails. what is recommended
procedure to treat this?
Here is a picture that show the extent of the issue:
https://pasteboard.co/C1EAn0w5t8KT.jpg
What I did is brushing it with a piece of steel wool moisted with oil.
I am not sure that it is sufficient so I would appreciate any tips on
how to treat them.
With linear bearings, clearance is zip and cleanliness is paramount.
The steel wool will in the face of that much rust will leave enough
debris to lock them up if they'll even move now. You may wind up
removing them, cleaning up the rest of the machine to lox clean
condition, using a brass or even stainless powered brush and putting on
new rails to restore motion. The problem here is quite likely the balls
in the traveler have also rusted. Cleaning that to smooth motion may
wear out the shop air compressor. You'll need 5000 count boxes of q-tips
to clean the ball groove, mashing them into the ball groove after a drop
of gun oil has been added. Any stain on the q-tip means get another
clean one and do it again.
I am in the middle of putting new linears on a big 3d printer, and have
had to blow away my invisible fingerprints several times to keep them
moving smoothly. What material does this machine normally process?
Even a 3d printer can be a dirty environment for them, there they aren't
oiled after being blown clean as the oil collects air born dirt. What
3n1 like or synthetic gun oil left after blowing clean is sufficient.
Viesturs
Good luck with this one, Viesturs
Take care & stay well.
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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