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Hi Guys. Anybody ever use the Z2 axis for T2100-T2300 on an L20 to drill back through the guide bushing? I am drilling a 6" deep hole and I'm trying to get a better result with run-out. My thought was to advance the drill (T2300), drill using the Z2 axis maybe an inch or so beyond the face of the guide bushing, then drill the remainder using Z1. Note sure exactly how to code it though.
What size hole? What material? I recently drilled a hole 5.25 deep in 303 ss. Can't remember dia. exactly, but was over .200. I can post the program if you'd like. Used Guhring drills - pilot drill, then long drill. When going to long drill, slow RPM, slow feed, no coolant. Once drill is in pilot hole, turn on high pressure, bring up RPM, and go. I used 2 or 3 pecks. I'll post it tomorrow for you. ------------------- John :cheers:
Deep Hole Drilling - Pilot drill .800 deep first (I used a GDF Block from Gang)
G610
T2200 S-3.0465 (5.5MM GUHRING)
M3 S1=500
G0 X0 Z0 T22
G1 Z.600 F100.
M64(ON) - I rigged high pressure from set screw hole
S1=7600
Z1.8 F.0042
G0 Z.6
Z1.7
G1 Z2.8
G0 Z.6
Z2.7
G1 Z3.8
G0 Z.6
Z3.7
G1 Z4.785
S1=500
G0 Z.6
M5
M64(OFF)
Z-.1 T0
G600
G630
HTH! -------------- John :cheers: