variable feed rate drilling

[patool]

need to set up 2 feed rates when drilling.we are drilling .043 diameter holes.1st drill is drilling .060 deep for a pilot.the second drill has longer flutes to enable us to get through the part which is .300 thick.tech people are informing us we need to run at .001 per rev. until we engage the bottem of the pilot hole then increase to .003 per rev.looking for g code help now unless it is an easy thing to do in mastercam.we are running a fanuc 18imb on a mori seiki nv 5000 with mastercam x3

[Philcott]

Use a G1 prep call instead of a drill cycle.

 

G0 Z.1 (approach)

Z.015

G1 Z-.06 F.001

Z-.325 F.003

G0 Z.1

 

Then clear out of the way.

 

I must say that .003 per revolution seems quite fast in my opinion for a .043 dia drill.

 

Phil

[Tim Johnson]

Reduced feed cycle