Spiral Milling

[jlavery]

Hi, all

Iam trying to spiral mill using a Fanuc 15M control.
The program is written as shown in manual starting at X0 Y100.0, finishing at X0 Y-30.0 with 20.0mm decreasing radii intervals.

G0 X0 Y100.O
G90 G02 X0 Y-30.0 I0 J-100 Q-20.0 F500

The toolpath goes directly to the finish point without spiraling at 20.0mm steps.
Dont know if its a programming problem or a machine parameter setting problem.
Can anyone help?

[I M Hooked]

Hi, all

Iam trying to spiral mill using a Fanuc 15M control.
The program is written as shown in manual starting at X0 Y100.0, finishing at X0 Y-30.0 with 20.0mm decreasing radii intervals.

G0 X0 Y100.O
G90 G02 X0 Y-30.0 I0 J-100 Q-20.0 F500

The toolpath goes directly to the finish point without spiraling at 20.0mm steps.
Dont know if its a programming problem or a machine parameter setting problem.
Can anyone help?

the program is in absolute try running it in G91 with a loop

[dcoupar]

According to the 15M-B Descriptions manual, Spiral Interpolation is an option. It may not be turned on in your control.

Your program looks like it should work, however, I'm curious as to why you omitted the decimal point in the J word but put them in Y and Q?