Threadmilling with Fanuc 18i-TB

[mroy0404]

Hello Guys

I have tried threadmilling on this 2006 Doosan 2000sy with Fanuc 18i-TB an have had trouble understanding how its done. I have copied the threadmill part of a program from a machining center an im sure this will not work. I will be drilling through a 1" dia on the X axis then threadmill a 9/16-18 .300 deep. using the Z & Y to interpolate. Here is the program I have now. Could one of you fine gentlemen help me with this code. The threadmill is .370 dia with a 18 pitch.
Thanks for your time guys!!


(THREAD MILL)
G56
T1222
M33 S2479 M7 (REV TOOL START)
X0.
Z.1
G01 Z-.3 F100.
G03 X-.0207 Z-.2861 I-.0103 J0. F4.9
Z-.2306 I.0207 J0.
G01 Z-.2167
X0.
Z.1 F100.
G00 Z.75
M09
M35 (REV TOOL STOP)
G28 U0.
T2300
M1

[christinandavid]

Hi,

Threadmilling cycle may be in your control - try G1010. Found this by accident in my 31i control. It was not in the graphic menus but is fully functional once you type it in then 'alter' it. Follow it up with a 'ZY random points' figure.

DP

[dcoupar]

I don't see a G17 (XY Plane Selection) anywhere. Also, be sure to program G18 when you're ready to start turning again.

[Ashish B]

I used a Vardex ThreadMill tool. They actually provide a software which creates NC program for generation of THREAD MILL program & which is Error Free.


I suggest you should refer to the Tool Holder Manufacturer for assistance or check out by Downloading Vardex Threadmill software which is free on their Website.

Ash

[mroy0404]

Hello Dcoupar

Im not sure I understand about the use of G17, if I add G17 to my program like this will it change my current X axis movements(actual X axis movements on the machine now) into my programed Z axis movements??
I am using live tooling sticking straight out along the X axis, the tool should rapid to .1 over the side of a 1" dia(hole will be cross way through 1" dia) then feed -.3 into the part.

(THREAD MILL)
G56
G17
T1212
M33 S2479 M7 (REV TOOL START)
Z.1
G01 Z-.3 F100.
G03 X-.0207 Z-.2861 I-.0103 J0. F4.9
Z-.2306 I.0207 J0.
G01 Z-.2167
X0.Y0.
Z.1 F100.
G00 Z.75
M09
M35 (REV TOOL STOP)
G28 U0.
T1200
G18
M1

[dcoupar]

Sorry, I thougth you were milling a thread in the face of the part (XY Plane). If you're trying to thread mill in the side of the part (YZ Plane) then I believe you need the 3D Helical Interpolation option.

If you have the option, you'll use G19 (YZ Plane Selection), and program the circular move with Y and Z, and the depth motion in X. The G19 doesn't do any conversion, it just sets the workplane for circular interpolation and cutter comp.

If you don't have the option, then you'll have to interpolate the thread with small line segments (the software that AshishB uses will work, but I think you'll have to convert X to Y and Y to Z and Z to X diameters. You can do this in your editor.