G07.1 Fanuc example?

8strings8rounds said:

Hi, I'm a lathe programmer and operator- for the most part I do basic turning, cutting, simple milling and drilling stuff.. Anyway.. I have had a new project thrown at me
I need to mill a left handed spiral flute on the C axis.
My machine is a Doosan Puma 2100sy (y axis) runs Fanuc 31i-modelB and material, length, mill/whathaveyou shouldn't matter as I am only looking for a program example to use G07.1 (cylindrical interpo)
Am I going to need to know a lead, or a number of degrees per Z movement? Is it 1 or 2 line? Am I going to need to cancel other modes? Etc
Thanks in advance!

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8strings8rounds said:

I saw another post somewhere about using H in place of C like-
G98Z-6.0H70.F4.4;
Is it really that simple? If it is, that's great because this part has 12 flutes..

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angelw said:

Hello 8strings8rounds,
Yes. H is the Incremental address for the C axis in a Mill/Turn machine. Unlike a typical Machining Centre, Incremental and Absolute axis moves can be combined in the same Block, hence the Absolute Z and Incremental H commands in your example Code.

Regards,

Bill

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