Thread milling on a CNC lathe

[mroy0404]

Hi Guys

Im setting up a Doosan 2000sy with a Fanuc 18i-TB control. The part beening machined has a cross hole which has a 9/16-18 thread in it. The problem Im having is how dose G41 work?? I need to be able to offset the threadmill in Z and Y axis bit by bit to maintain thread Dia. size. Here is the threadmill part of the program. I not sure where to place wear offset numers as needed.

Thanks for all an any help guys

(THREAD MILL)
(TOOL-11 OFFSET-11)
G54
T1111
G19G98
M7
G0X1.Z-1.1875
G97S2000M33
X.37
G3X.3838Y.0392Z-1.1483R.0392F5.
G41X.3978Y0.Z-1.109R.0392
X.4256Y-.0785Z-1.1875R.0785
X.4534Y0.Z-1.266R.0785
X.481Y.0785Z-1.1875R.0785
X.5088Y0.Z-1.109R.0785
X.5226Y-.0393Z-1.1483R.0393
X.5364Y0.Z-1.1875R.0393
G1X.37
G3X.3838Y.0405Z-1.147R.0405F5.
X.3978Y0.Z-1.1065R.0405
X.4256Y-.081Z-1.1875R.081
X.4534Y0.Z-1.2685R.081
X.481Y.081Z-1.1875R.081
X.5088Y0.Z-1.1065R.081
X.5226Y-.0405Z-1.147R.0405
X.5364Y0.Z-1.1875R.0405
G0X1.
M35
G40
M09
M90
G28Y0.
G28U0.
T1100
M01

[CNCRim]

Cutter comp turn on with G0/G1 only.

[Ozemale6t9]

Can't say that I have ever tried to use radius comp for milling on a lathe. Have you tried using a value in the radius offset with the current program?

[dcoupar]

(THREAD MILL)
(TOOL-11 OFFSET-11)
G54
T1111
G19G98
M7
G0X1.Z-1.1875
G97S2000M33
X.37
G1G41X.3838Y.0392Z-1.1483F5. <------ turn on comp w/ linear move here
X.3978Y0.Z-1.109R.0392 <------ remove G41 here
X.4256Y-.0785Z-1.1875R.0785
X.4534Y0.Z-1.266R.0785
X.481Y.0785Z-1.1875R.0785
X.5088Y0.Z-1.109R.0785
X.5226Y-.0393Z-1.1483R.0393
G1G40X.5364Y0.Z-1.1875 <------ turn off comp w/ linear move here
G1X.37
G41X.3838Y.0405Z-1.147F5. <------ turn on comp w/ linear move here
X.3978Y0.Z-1.1065R.0405
X.4256Y-.081Z-1.1875R.081
X.4534Y0.Z-1.2685R.081
X.481Y.081Z-1.1875R.081
X.5088Y0.Z-1.1065R.081
X.5226Y-.0405Z-1.147R.0405
G1G40X.5364Y0.Z-1.1875 <------ turn off comp w/ linear move here
G0X1.
M35
G40
M09
M90
G28Y0.
G28U0.
T1100
M01