ramp milling

[almachinist]

i use an 18i fanuc controller and i program on the shop floor using g code was wondering how to program a ramp milling operation

[dcoupar]

G00 X0 Y0 Z.1 (POSITION TO START)
G01 Z0 F10. (FEED TO TOP OF PART)
X-1. Z-.25 (RAMP)

That kind of ramp?

[almachinist]

i'm machining a 6'' pocket and i would like to circular interpolate the pocket by ramp milling. by that i mean every time the cutter makes a complete revolution around the pocket the depth in z goes down .200. maybe this will help

[ALLtra Mach]

Add a z move to your G3 line.
They'll tell you it doesn't work..but it does.
You didn't mention tooling or material, depending on all that the .200 could be quite an aggressive move. Check ramp angle for your tool. Remember your tool isnt making a 6" circle, the larger diameter of the tool your ramp angle increases significantly.