[buster8297]

Hi,

After being a mazatrol/okuma lathe guy for the last couple of years, I took a job that's strictly g code. I am interested in using a lathe canned drilling cycle. Can anyone give me an example? I run a Mori Seiki SL 200.

many thanks

Buster:cheers:

[txcncman]

Do you have the machine manuals there? Do you mean G74? Or G81/G83?

[g-codeguy]

Can I assume it has a Fanuc control? If so the only canned drill cycle I know of is the G74. I don't like it for most drilling applications. Any of our lathes using G81/G83 drill cycles have it because the lathe has live tooling. No live tooling, no G81/G83...at least on our lathes. Do you have Macro B? Hope so as this is the best way to make a canned drill cycle.

[buster8297]

G74, there is a brief description in the manual
:cheers:

[txcncman]

What do you need to know about G74?

[buster8297]

The only thing i'm not sure of is how the Q depth of cut works. If I entered
Q00025 is that .0025 or .025?

[txcncman]

Q is expressed in ten thousandths of an inch. Q0001 is 1 ten thousandth of an inch (0.0001). Q0100 is 100 ten thousandths of an inch (0.0100). Q9999 is 9999 ten thousandths of an inch (0.9999).

[buster8297]

Thanks, that helped alot.
Buster

[g-codeguy]

The only thing i'm not sure of is how the Q depth of cut works. If I entered
Q00025 is that .0025 or .025?

This only works correctly if you have a Super Precision lathe which is programmable to 5 decimal places in which case it would be .00025.

[Helman Jr.]

If you are using Metric system G21 (mm) then
Q30000 means 30mm
Q3000 means 3mm

N10 T5
N20 G97 S500 M03
N30 G00 X0 Z2
N40 G74 R1
N50 G74 Z-60 Q30000 F0.1
N60 G00 X100 Z100
N70 M30