[GCODE_FAN]

Looking for a good explanation of can cycles for an Okuma lathe. It's an old OSP7000l. It's a chucker with a turret, doesn't even have a tailstock, so pretty basic. Most of what we have in our shop has Fanuc controls and for what we do, we use can cycles on almost everything. Most of our manuals are fairly beat up and i think we may be missing some. From what I've seen though, the manuals don't give a lot of help, just a brief description of them. thanks for your time.

[fordav11]

actually, the manual tells you everything if you read it and understand it. read the special functions 1 manual about LAP

a simple roughing cycle equivalent to G71 and then a finish cut equivalent to G70 is done like this....

G0 X3.0 Z0.1
G85 N123 U0.01 W0.005 D0.300 F0.014
N123 G0 X2.0
G1 Z0 F0.01
X2.5 Z-0.25
Z-2.0
X3.0 Z-3.0
G80
G87 N123

[GCODE_FAN]

Thanks for the reply. Unfortunately,special functions 1 is one that I don't have. N123 must be the start of the can cycle, G80 ends the can cycle and G87 is the finish profile? Does the N123 have to be a certain amount of digits or in any certain order? What code would be the same as a Fanuc G72? Thanks again for your help.

[fordav11]

N123 is the start. it's like the P sequence number in a G71. but on Okuma you dont need a P/Q you only need an N number or even text. it is limited to 5 characters.
the manual uses the example NAT01 in place of my N123
the end of the profile is designated with G80
if you want to face use G82 instead of G81. The G85 is the same.
also, U and W must be positive. On Fanuc the sign signifies which direction the allowance goes but on Okuma it uses a different method and U/W must be positive.

oops. look like I missed typing the G81 in the above example and the moron running this show won't allow edits to stop people deleting their posts because he needs to beat off on the number of posts he gets daily and a deleted post would cause his dick to go limper than usual so I can't fix the above incorrect post and it will remain incorrect forever, and mislead everyone unless they read this post too. and its all his fault.
of course he'll probably take offense because I've let the cat out of the bag by telling everyone that he does actually have erectile disfunction and he will probably ban me. but I'm getting tired of this no-edit rule so it could be time to move on to somewhere else.

anyway, here's the corrected program.....

turning example
G0 X3.0 Z0.1
G85 N123 U0.01 W0.005 D0.300 F0.014
N123 G81
G0 X2.0
G1 Z0 F0.01
X2.5 Z-0.25
Z-2.0
X3.0 Z-3.0
G80
G87 N123

facing example
G0 X3.1 Z0
G85 N123 U0 W0.005 D0.150 F0.010
N123 G82
G0 Z-1.0
G1 X2.5 F0.01
X2.0 Z0
X0
G0 Z0
G80
G87 N123