milling a circle

[osomaker]

HI EVERY ONE
IM NEW IN THE COMMUNITY. SO I HOPE ITS THE RIGHT WAY TO POST A QUESTION.
SO..I HAVE BEEN ATTEMPTED TO MILLING AN ARRAY OF CIRCLES, IN THE POCKET MODE AND IN THE CONTOUR MODE, WHIT THE MC8.1 AND WHIT THE MC9, AND THE RESULTS ARE THE SAME MY FADAL VMC40 , MAKES STRANGE FORMS LIKE SQUARES OR ROMBOIDS, INSTEAD THE DESIRED CIRCLES.
i guess its rigth to say im working with format 1 and whit a fanuc post
ANY ONE CAN HELP ME?
TANKS

[lakeside]

yuor code should look somrthing like this just a circle


N1 G0 X-1.1625 Y1.8598 Z0.1000
N2 G1 Z-0.3000 F5.
N3 G3 Y1.8739 R0+0.0100 F10.
N4 X-2.4000 Y0.6365 R0+0.8750
N5 X-1.1625 Y1.8739 R0+-0.8750
N6 X-1.1767 R0+0.0100
N7 G0 Z0.1000


N1 O1(test)
N2 G17 G90 G40 G80 E1
N3 G49 M9
N4 T1 M6 D1 ()
N5 S1000 M3
N6 G43 H1 E1 X0 Y0 Z0
N7 G00 Z0.25 M8
N8 G0 X-2.4884 Y0.5481
N9 G1 Z-0.06 F15.
N10 G2 I0.7071 J0.7071 F20.
N11 G1 Z-0.18 F15.
N12 G2 I0.7071 J0.7071 F20.
N13 G0 Z0.25
N14 G0 G80 G90 M5 M9
N15 G53 Z0
N16 E0 X0 Y0 Z0 H0
N17 M30

[osomaker]

im supposing, you are using the fadal2 post?
i've been used the fanuc generic post, and having no problem whit it, actually im doing
some tests, whit these post (fadal2), it looks good, the question could be, do i have to make some changes in the programer's file editor? or just post it, and send to machine like that?

G91H0Z0
E0X0Y0
this codes are the same as G28Z0 / G28X0Y0 (RETURN TO HOME) ?

thanks likeside for your assist

[lakeside]

that was format 1 from bobcad post and I have sent it to a fadal in the past so I do kwon it will work
you command line at start should look like this N2 G17 G90 G40 G80 E1 and yes G28 return home you can also call G53 z0x0y0

[AllDone]

osomaker, there is a nice cycle for circle milling - L9400/L9401, if youre' using 'Legacy' (HS88) CNC. Try it, Im' using it often for holes milling (btw, Fadals' accuracy is very good - Im' having ellipse about 0.004 mm at holes from 10 to 72 mm diameter).

Unfortunnaly, I dont' now how to rebuild MC's post for using this cycle, but its' very easy to add it in your programm manually.

[MojosMachine]

I am using a Fadal with format 2. I have MC and I have a Fadal post for it. I can send it to you if you would like to try it. The only thing I cant get it to do is post a rigid tap cycle. All I do it change the code from and G84 to a G84.1 and it will run just fine.

[rickyt]

mojo you could call your mc reseller and they can talk you through the post mod for the G84.1, or you could log onto emastercam forum and ask for help. Just dont ask for a post they dont like that.

[MojosMachine]

Thanks for the info but I have switched to Surfcam for my primary Cad/Cam now.