1200mmX900mmX170mm 4axis cnc

[hanermo2]

You will probably dislike my advice ..
Which is unfortunate, since it is excellent and will help You a lot.

All, absolutely all cnc and mills/routers/machines depend on rigidity.
A common error using linear guides is comparing the max strength of a linear guide to actual work, or load.

A typical old manual lathe, 11-12", has 50 metric tons "strength".
But cutting loads are 50-100 kgf.

The reality is that modern machine tools are about 2% loaded at max vs strength.

[Nickhofen]

Thanks for the advice Hanermo2!
What do you suggest me to do ?
Hola to Sevilla ,Malaga,Barchelona....I can't recall other cities I have visited,it's been a long time.

[hanermo2]

Hi nickofen !
*Everything* depends on your goals ..
and capacity and productivity depend on rigidity above all else.

Ex.
I could cut about 0.1-0.2 mm deep with a typical setup, using a 50 mm wide 4 insert apkt facemill.
(12" Lathe, upgraded ac servo spindle 2.5 kW continuous.)
I built a modular vice using 4 pieces of 50x100-300 mm solid tool steel billets, cross-drilled for 16 mm hardened industrial grade 12.8 bolts.
Vice took 3-4 days to do, and the 4 parts mass == 50 kg.

I could then cut the same piece, about 200x200x80 mm, with 3.4 mm deep cuts at double the rpm.
The difference in productivity is about 10:1 - 20:1.

I don´t think there is a "right" answer, but vastly bigger and heavier and thicker is usually the right choice for *everything* in lathes and mills and routers.

They deliver about 20x the performance, typically for 100-150€ more in steel costs and 2 days extra work in assembly work and fitup, per assy.

[Nickhofen]

Thanks for the reply Henermo!

[Nickhofen]

Vfd an d spindle is here! I have to find time and connect them to test if everything is ok. Is 1.2 mm non shielded wire ok for connecting vfd with spindle?
For corrosion prevention do I have to use solution of car antifreeze liquid with water? I have read somewhere about a solution of a special anticorrosion oil with water....

[Desertboy]

Vfd an d spindle is here! I have to find time and connect them to test if everything is ok. Is 1.2 mm non shielded wire ok for connecting vfd with spindle?
For corrosion prevention do I have to use solution of car antifreeze liquid with water? I have read somewhere about a solution of a special anticorrosion oil with water....

I have a 2.2kw from solar jean I never added anything to the water still coming out clear in the pipes can't see anything in the bottom of the tub I have clear lines which is not good get black ones if possible (Algae).

I have an ozone pond cleaner which I'll add when I remember lol this will eliminate algae and in the abscence of visible corrosion in the reservoir I'm going to not worry lol.

I used 1.5mm but reading up 1mm would be fine as well BUT you need it shielded (CY) VFD creates a lot of interference and the most likely thing to cause you issues in the cnc.

I haven't shielded mine YET and seen no issues but I would not cut anything properly until I have (I only need to connect to earth, it's all in place)

[Nickhofen]

Thanks for the reply Desertboy, I will go for shielded cables then, the cost is not much higher than the non shielded, so it is better to be CY and block all interfierence that I can.