NPT thread milling in Mastercam X8

[PegroProX440]

I know you guys are going to say its about time, but I just bought some thread mills. I have been having a hard time getting a nice clean looking npt tapped hole. I bought a thread mill in 1/8-27 and 1/4-18 from Mari Tools recently. I've never programmed a thread mill before and would sure appreciate some help. Do I pre-mill the hole to get it to a reamed size first? I dont know where to start!!!

 

[m98custom1212]

Pretty much just single pointing a thread on mill or mill turn.

 

[aldepoalo]

This video may help...

 

[aldepoalo]

Or maybe this one...

 

[brian.pallas]

If you have MCAM lathe there is a a handy chart for threads which will have the major diameters of NPT threads for programming. I have never found another chart similar to that one somewhere else, but I am sure there must be.

Then the depth comes from Machinery's Handbook, or other similar NPT chart.

Then the videos posted shows the rest of what you need to do.

You don't need to ream the small NPT's. A drill chart will tell you what drill size to use.

 

[mkd]

once you get it to work export the toolpath to a safe place you can call-up next time.

really cool to be able to drop in a thream mill op in a new MC file. then click regen. done