G41/42 cuttercomp Problem...

[Mitsui Seiki]

Ok,I hope you get it to work with G39.

[allchevy]

hello i set up 4 differnt kitamura mills my center 1 ,my center 2 , h300 .....i have one machine that i have too put all the g01 feed comand in front of all moves with cutter comp g41 ,g42 if i dont it runs away .

[thamain1]

Originally Posted by Swemill Ahh.... More "Swedes" here! :-) I thought you wanted the program and i belive it's like this: (dont have an exact sample here) % O0001 G0 G91 G28 Z0 G28 X0 Y0 G92 X175. Y55. Z307. G80 G40 G49 G0 G90 G43 X0 Y0 Z2. H2 S1000 M3 G1 Z-2. F500. M8 G41 X0 Y2. H22 (H22=5mm) Y-50. X-100. Y50. X2. G0 Z20. M9 G40 X20. G91 G28 Z0 Y0 M30 % With this prg. i want a 100 x 50mm rectangle.... The machine dont have any D and only uses H. I also have G17 connected in MDI! Must say BIG thanks to dcoupar.... I really thinks that G39 is the solution in the old 3M!!! Have read about it but thought that it was an alternative to get radius at corners (not sharp edges) and not a necessery thing. To bad of me... That would also explaine why i couldnt connect G41 from X10. Y10. to X0 Y10. and then go in Y- with G1 ! Could only do that sucsessfully (G41 and right comensated) with a straight line in Y like the prg. above! To do that i then would have needed a I and J value also...!? I also hope that it would be able to do very small radius at the 90 degree corners to go around a angular part!? Any suggestions how the program would be with G39? Shall try this at home tonight after work... /Jocke

Firstly if you have no (D)'s how are you using cutter comp.?(G41/G42)
What about this;
%
O0001
G0 G91 G28 Z0
G28 X0 Y0
G92 X175. Y55. Z307.
G0 G90 X0 Y0 S1000 M3
G43 H2 Z2. M8
Z-2.
G1 G41 H22 (set your "H" value equal to 1/2 tool diameter)X0 Y2. F??.
G1 (some machines respond better to repeated G1's) Y-50.
G1 X-100.
G1 Y50.
G1 X2.
G1 G40 X20. F??.
G0 Z20. M9
G91 G28 Z0 Y0
M30
%

I personally do not have to repeat the G1s on either of the Mills I run, both Kitamuras. One has Fanuc, the other Yasnac controller. Also if you wanted fillet radii corners add your G2 move between each of the G1 lines. Remember to account for the radius when doing those G1 moves and leave enough distance to make your arc before the next G1.
Also I noticed in your example you went G0 before comping off G40. Did this not cause an error? If I must move up (Z) before moving out (X,Y) I have to leave G41 on and make a G1 Z++ then comp off G40.
Hoped this helped.