G-code or Coordinate probem

JohanO

Hi,

I have just built a 3 axis milling machine and everything works as it should, the calibration is done against DRO so it is perfect.
Now to the problem.
I draw and prepare in F360 and use generator MACH3MILL.
When I load the file in DDCSV3.1, everything looks good.
But, if I am going to run 4 holes with a square of 50mm cc, for example, make the first hole and then move to the next hole (almost) and drill all
3 holes right next to each other.


The G-koden.


(SISTA)
G90 G94 G91.1 G40 G49 G17
G21
G28 G91 Z0.
G90

(DRILL3)
M5
T70 M6
S5000 M3
G54
G0 X25. Y25.
G43 Z15. H70
Z5.
G98 G81 X25. Y25. Z-2. R5. F500.
X-25.
Y-25.
X0. Y0.
X25. Y-25.
G80
Z15.

G28 G91 Z0.
G90
G28 G91 X0. Y0.
G90
M30

This is the planed hole pattern

   O------50------O

  (50)     O      (50)

   O------50------O

Any ideas?

Regards Johan