I Need help for 4 axis cnc

pl7i92 wrote: hi welcome
i got some 4th axis running on linuxcnc and it is a realy nice mashine setup
no problem to do XYZA or XYZb or even XYZC

yes I know it can be done with linux cnc but I don't know how to do it

Endless wrote: yes I know but the cost is too much. I do not have much money. Did you find a problem with my design?

No, it looks OK.
I would set the gantry a bit lower as it would be more rigid, but maybe you need all that space below.

tommylight wrote:

Endless wrote: yes I know but the cost is too much. I do not have much money. Did you find a problem with my design?

No, it looks OK.
I would set the gantry a bit lower as it would be more rigid, but maybe you need all that space below.

I originally designed it with a 5 axis head. so the bridge was high I could drop it a little more. The cnc dimension is 2750 mm x 1500 mm x 750 mm. What is the ideal ideal bridge height? What badly affects the high bridge?

Well if you go that high, you have to set the carriages much wider, and strengthen the sides that carry the gantry.

tommylight wrote: Well if you go that high, you have to set the carriages much wider, and strengthen the sides that carry the gantry.

I used this carriages

25 and large

www.sahinrulman.com/lineer-ray-araba-shn...r-ray-araba-shn-25-a

They should do nicely.