Ikegai ANC20 with 5T G71 Roughing Cycle

[ED209]

I have an ikegai ANC20 lathe with a Fanuc 5T control, LED no CRT and I am trying to program a G71 roughing cycle. When the control gets to the G71 cycle it just sits there & does nothing. The manual has examples of the G71 cycle which I have followed G71 P__ Q___ U__ W__ D___ F___. It can do a G90 roughing ?. Anyone tell what it or I'm doing wrong.

Thanks,

Ed

[sinha_nsit]

try 2-block G71:

G71 U_ R_;
G71 P_ Q_ U_ W_ F_;

Make sure that the profile is defined properly, starting from P-block number and ending at Q-block number. The P-block should not have any Z- or W-word (unless you have G71 type II on your machine). If nothing works, post your program.

[ED209]

Thanks, but this control is older than the 2 line G71 (F15 format I think they call it). Was this maybe an optional cycle back then or was it a standard cycle ? & how would I check ?.

[dcoupar]

Why not post your program here so we might be able to help you?

[ED209]

OK here is the roughing cycle. Note this is an old control, no CRT screen & uses G50 for tool geometry.

%
O0010 (G71 TURNING )

N1( ROUGH DNMG 432)
G50 X0 Z0 S2000 M42
G96 S425 M03
G00 T33

G0 X70000 Z1000
G71 P10 Q11 U0300 W0050 D0800 F0120
N10 X37296
G01 Z0
G03 X59232 Z-4544 I0 K-15513
G01 X64250 Z-7052
Z-9783
X65500 Z-10408
Z-68000
N11 X67500
N13
G00 X0 Z0
T30
M05
M30
%

[CNCRim]

I don't think G71 is on your machince, option the company didn't want to buy at the time.

[ED209]

ok that is possible. How can I check or where do I check to see if it came with the cycle or not. We bought this machine used.