How to find the error of my CNC

[mekanik]

Right now i can see what you are trying to do, i would go with the automatic level option i mentioned, should be able to hire one for a day, something like this.https://www.ebay.co.uk/itm/Leica-NA-...0wI~:rk:7:pf:0
magnetic base with steel rule and sweep your X axis profile.
Mike

[paulus.v]

Why don't you just epoxy level both axis and you are done? Here is a good example and there's a lot more information about it on this forum.

[driftspin]

Why don't you just epoxy level both axis and you are done? Here is a good example and there's a lot more information about it on this forum.

Epoxy yes.

But... a bolted frame. Is it to be moved a lot?

So is it rigid and tight fit so to be able to take apart and together exactly the same ?

If there is any room for error .. it is no use, not really

Maybe a dowelpin system might work to get the same fit every time.

Btw my welded steel frame had +/- 1.5mm @ 1850mm distortion after welding.
Warping and twisting in all directions.
Needed about 7mm epoxy thickness to level out, and have at least 4mm at the high spots.

Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

[paulus.v]

I cannot see why and how would you disassemble and/or move a 4 meter long cnc. I see it bolted down on a thick concrete floor in its final position and then epoxy levelled.

Grtz Bert, in your place I would have poured two layers of resin. For let's say a minimum 2% of resin curing shrinkage at your 3 mm thickness difference you've got a 0.06 mm final level error. It is not a lot but it could be avoided.

[driftspin]

I cannot see why and how would you disassemble and/or move a 4 meter long cnc. I see it bolted down on a thick concrete floor in its final position and then epoxy levelled.

Grtz Bert, in your place I would have poured two layers of resin. For let's say a minimum 2% of resin curing shrinkage at your 3 mm thickness difference you've got a 0.06 mm final level error. It is not a lot but it could be avoided.

Hi paulus.v

yes. i agree.. 0.06 .. it might need another pour..
I hope i can work at that precision level and size any time soon and notice problems in my build.

I am gonna do a laser beam check in a few weeks..


On topic.
If it is at its final position and all diagonals and braces are welded ... go for it. Epoxy level.

Grtz.. Bert.


Verstuurd vanaf mijn SM-A320FL met Tapatalk