thread mill tools

[Jmick]

I need to thread mill a 1/8-27 npt. What tools would you use from the tool library or do you have to work around and use a taper mill profile.

[kennebec]

I just use an E mill that is the same Ø as the Thread mill and set MCam parameters from there, however I have not had much luck getting tapered output from Mastercam for NPT

[Jmick]

Thanks kennebec thats what I thought.

[[email protected]]

Use threadmill with 1.7899 taper start at bottom and go up

The correct depth for 1/8-27 is Z-.394

 

HTH

[Cad-Camr]

The thread milling in Mastercam works great on pipe threads. I often encounter multiple pitches on the same part and use a single point tool and cut them all. Very good results.

[bogusmill]

I use single point threadmills made by Scientific and purchased at MSC. They hold up well for my use so I have drawn 6 different sizes. When you need to thread mill I go to op manager and chose create new tool/undefined/custom file and chose the size I need. I have them labeled by diameter and distance from bottom to thread point like (.182 threadmill-.023.mcx). Then set diameter to .182 and on parameters page I name tool the .mcx file name and other parameters as usual. Then when setting TLO for that tool a look at tool name on CNC display tells me that once I've got TLO zeroed I must subtract .023 for point to be a zero. Back plot and verify work perfectly this way. Shown is a 3/8 -24 twin lead thread.