Pipe Thread

[harley88]

I have a 2001 SL-20 Lathe that I have cut a lot of threads on ,but now I have a job that needs a 2" 11 1/2 npt thread and don't know where to get the info on how to program this thread . Thought if anyone could help it would be you guys!! Thanks in advance!

[HuFlungDung]

Did you check the haascnc website?

http://www.haascnc.com/custserv_training.asp#lathe

I suggest the lathe workbook for you.

[Jedi]

Hopefully this is helpful. I am currently studying cnc programming. I wrote a program for a 1-1/4 11.5 npt and it worked out great. I made some adjustments to suit your 2 11.5 npt So hopefully this is usefull.
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(2-11.5 NPT THREAD)
(HANDTIGHT ENGAGEMENT 5 TURNS)
(TPI .0625)
(THREAD HEIGHT .0695)

N3 (ID TAPER) (TIP 2)
N300 G00 T202 M42
N301 G96 S350 M03
N302 Z0.1
N303 X2.75 M08
N304 G71 P305 Q310 D0.025 U-0.01 F0.005
N305 X3.1
N306 G01 G41 Z0.
N307 X3.063
N308 X2.888 Z-0.085 (CHAMFER)
N309 X2.831 Z-1. (PIPE TAPER)
N310 X2.75
N311 G00 G40 Z0.1 M09
N312 G28 U0. M05
N313 G28 W0.
N314 M01

N5 (ID THREADING) (PIPE THREAD ID)
N500 G00 T303
N501 G97 S300 M03
N502 Z0.5
N503 X2.75 M08
N505 G99 G76 X2.925 Z-1. A60 I0.047 (1.5 X .0625/2) K0.0695 D0.02 F0.0869
N506 G00 X2.75
N507 Z0.5 M09
N508 G28 U0. M05
N509 G28 W0.
N510 M01
N511 M30
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