Need Help!- spiral facing cycle 31i controller

[jay_dizzle]

wanting code to do a spiral facing cycle. the people at fanuc are telling me that this is an option that needs to be purchased, is this correct? i am looking for basic code to do this, no macros or can cycles. can you guys shoot me some examples?

[sinha_nsit]

Macro has to be used for better control (e.g., spiral cutting).
Otherwise, use 360 degree circular interpolation, shift radially and again use circular interpolation. Repeat it till you reach the desired diameter.

[jay_dizzle]

it shows in the manual that i should be capable of a spiral type, decreasing radius circular interpolation. the only problem is it will not read the radius increment amount (Q), or the number of revolutions (L).

the code should look like this;

G90 G02 X0 Y-30.0 I0 J-100.0 (Q-20 OR L4) F300;

*EITHER Q OR L CAN BE OMITTED*

the problem is that it will not read 'Q' or 'L' so it just generates one 360 degree spiral from start to finish point. this won't do.

[cnc2149]

It is not always clear in the manual that certain features are optional. However, the Q and L are only used in this example when you have the Spiral Interpolation option. Since your CNC does not have it, it will not perform the spiral. FANUC should be able to install it if you want to be able to program it this way. Otherwise, you can do a roll-your-own with the macro variable method described in the earlier post.

[mactec54]

jay_dizzle

Not much to it if you have good cam software