2-1/2 - 8 NPT Thread Mill Program

[wesleybridgepor]

Is it possible to thread mill a 2-1/2 npt with a single point carbide thread mill. I have a Fadal cnc and would love to get the g-codes for this program. I am familair with threadmilling but have not been able to figure tis one out can someone help?

[NL2000]

What you need to do is increase the J value by the result of the following formula. Pitch x angle of taper. For example your pitch is .125

.125 x Tan of 1.7833 will equal the amount the J value needs to increase if you are milling an ID thread and starting at the bottom and working up.

Hope this makes some sense.

[ctate2000]

I do not think you can program a single flute tool to mill tapered threads. You will have to buy a tapered thread mill and program using helical interpolation.