[bdyenter]

i need to put 10 holes on the face. I pilot drill them thru with a .6875 drill, but then
I need to interpolate a counter bore on a 24" B.C at 1.66 inch deep and 1.437 dia. Can use a .500 -.625 end mill. I know I need to use the G12.1. I have a Doosan PUMA 700. I have no Y axis. Just X, Z, C. Looking for an example of helical milling program on this.

Thanks

[DouglasR]

Hi

Non Y-axis machines don't have the helical milling as standard, it's a field install option. So, in this case, you could order the option from Doosan, or have your CAM system write out the code long hand.
-Doug