Threading problem on Mori seiki zl-15smc

[DryRun]

So today at work i was cutting an M24 thread

got everything setup and wrote a program. Ran the first part and threads were short by .5000?? checked my program it was ok??

program was like this for thread

N8T0808(M24-3 THREAD)
G97S1000
G0G54G99X0.975Z0.2M8
M24
G92X0.929Z-2.3F0.1181
X0.909
X0.884
X0.878
X0.863
X0.848
X0.833
X0.813
X0.808
X0.803
X0.8
G0Z0.2M9
G28U0W0T0M5
M30

To Make the Part write I changed to this:

N8T0808(M24-3 THREAD)
G97S1000
G0G54G99X0.975Z0.2M8
M24
G76X0.8Z-2.3R0P0663Q10F0.1181
G0Z0.2M9
G28U0W0T0M5
M30

Mori had no answer for my problem

Does anyone?

I Like G92 more then G76 and have used it many times on this machine to thread its alot faster then G76?

Fanuc 16TT control

[star-turn]

Only thing i can se is a g76 is a better threading cycle!!!

hehehe...

[star-turn]

PS...


Dryrun, how do you make uot G92 is quicker than G76 ??

with 76 there are less programming lines and you can set the cycle to make 2 or 3 passes

ST

[star-turn]

Oh P** !

Sorry about the typo's its 4 45 AM! - Early start but brain still in bed

[DryRun]

i have always had better tool life using G92 over G76

with G92 you are not stuck with just a depth of cut
it can change from one pass to the next

if you are running high production simple programing is not always the fastest way Togo