Pls. Help Thread Milling on a Doosan 2000sy

[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 a 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(drill .512 dia) 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. I figured the use of G56 would be easier to set-up then trying to mess around with G54 as it's being used for the turning part of the program.
Thanks for your time guys!!


(THREAD MILL)
G56
T1222
M33 S2500 M7 (REV TOOL START)
X0.Y0.
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

[dcoupar]

Attached .jpg is from the Daewoo NC Programming for PUMA Turning Centers
Equipped with Live Tools, Sub Spindle, Y- Axis manual.

[mroy0404]

How can I see if this control has the 3D helical interpolation opyion turned on, could someone please PM me the parameter to check


thanks

[CNCRim]

the quickest way is to made simple 3D helical and run it.

[DIFF OVER]

you should be able to program the Y axis in quadrants and do helical / thread milling.

[chucker]

check out this thread it may help
http://www.cnczone.com/forums/showthread.php?t=91168

[78nova]

I just saw your post and I am needing to leave work so I do not have time to write out the ramp in ramp out program I am using but I do not see where you are making a big enough circle to make the thread.

My math for your cutter= .5625 Thread minus .370 tool diameter = .1925

.1925 divided by 2 = .09625......... this equals the circle diameter needed to make your tool cut to a .5625 diameter.

or I am totally looking at your program wrong?

My machine positions in the X & Y plane, rapids to the r-plane in Z then feeds to the bottom of the hole and then ramps into the diameter in x-y & z moving ccw out of the hole. My cutter is a .350 diameter and my j = .1063

.5625 - .350 = .2125 / 2 = .10625

I can post more on Monday if you need. Gotto go. later

Kenny