Originally Posted by
José L.
Hi,
I´m currently threading 1 7/8¨- 8 UN nuts with a CNC turning machine (2 axis Victor V-turn 26), the material I´m working with is 4140 steel (28-30 HRc)
The problem I have is when I use the G76 code for threading, I only manage to thread like 30 nuts (with one side of an insert), but if I use G92 instead, I can do more than 60 pcs. I think the problem is because G92 I can control the amount of passes manually, so I do 16-17 passes for the thread, and with G76 it does only 12 passes.
My question is: Is there any way to adjust the total amount of passes with G76? I can only manage to adjust the first passes and the last ones, but nothing in between. I´ve already tried changing the first Q parameter and putting it below 100, and didn´t do anything.
Did anybody have the same problem, or know if I could do anything?
Thanks.
José