I Need help for 4 axis cnc

thank you for your interest. Will it be necessary to write a post processor according to the CAM program to be used? I do not know how to do this, I do not know how

Depends on the cam program. Some have linuxcnc or Mach post processors and a general Fanuk post processor should get you close for plain gcode programs.

Did you look at the pictures in my first message?
my machine is not a standard machine

Ahh yes - the second head is a little non standard

What does it do?

As far as i can tell from that drawings, it is a dual drill setup with 90 degree rotation.

Hi
solidcan has a 4th axis post for Fanuc11m that will shure fit your need
if not licenced you simply can use a Free Autodesk product for small busines
the 4th axis is only a setup

i mainly use them as a B axis as the Y is then the main axis and the machine dont move in X Gantry
its basicly a lathe type machine 3Axis YZB with X takeng the center pont wherever 4th axis is located at the large Table