Need Help!- WEB drilling with Fadal 4020HT

[Gerald Sande]

Hello all; I'm trying to drill a tube in two "X" locations. Right now the program is drilling as if it is a solid piece of material. I would like to speed the "R" plane threw the tube. Tube diameter is 1.660 with .140 wall thickness 6061 T6. 1/4 inch drill.Here is the program;
%
N5 O572 ( AXLE WEB DRILL 2 HOLES 1/4 DRILL )
N10 G20
N15 G00 G17 G40 G49 G80 G90 Z0.
N20 T1 M06
N25 G00 G90 G54 X0. Y0. S1070 M03
N30 G43 H1 Z1. M08
N40 G99 G81 R0.1 Z-1.875 F7.1
N45 X-11.312
N60 G80
N65 M05
N70 G91 G00 G28 Z0. M09
N75 G28 X0. Y0.
N80 M30
%
Thanks all I just got my machine back working since September 2009. Jerry

[chipwitch1]

If I understand you correctly, you want to stop drilling the air inside the tube? You could use two hole cycles instead of one, if you're intent on using the canned cycles.

%
N5 O572 ( AXLE WEB DRILL 2 HOLES 1/4 DRILL )
N10 G20
N15 G00 G17 G40 G49 G80 G90 Z0.
N20 T1 M06
N25 G00 G90 G54 X0. Y0. S1070 M03
N30 G43 H1 Z1. M08
N40 G99 G81 R0.1 Z-.2 F7.1
N41 G80
N42 G5 Z-1.49
N43 G99 G81 R0.1 Z-1.875 F7.1
N44 G80
N45 G0 X-11.312
N46 G99 G81 R0.1 Z-.2 F7.1
N47 G80
N48 G5 Z-1.49
N49 G99 G81 R0.1 Z-1.875 F7.1
N60 G80
N65 M05
N70 G91 G00 G28 Z0. M09
N75 G28 X0. Y0.
N80 M30
%

I think I would forgo the canned cycles and just g-code what you want it to do directly. But that's just me ;-)

[Bwana Don]

Originally Posted by chipwitch1 If I understand you correctly, you want to stop drilling the air inside the tube? You could use two hole cycles instead of one, if you're intent on using the canned cycles. I think I would forgo the canned cycles and just g-code what you want it to do directly. But that's just me ;-)

+1 on G coding it. You could make it a label if you have multiple holes.

[Gerald Sande]

I will load the program Friday 04-09-2010 and see what happens. Thanks!