NPT THRED MILLING

[mirek1017]

Good morning Guys !!!

I have some part with 1 * 11.5 NPT.

I wont to try thredmilling  this .I have carmex insert  with 9 teeth  .My question is,haw programing  this ,like satndard  tap or I have to check in the box some taper angle  ???

thanks for any helps 

https://www.dropbox.com/s/06feuwt0yqjomgc/npt.jpg?dl=0

 

[gcode]

Use a Ø1.308" circle to drive the toolpath

set the taper angle to 1.7833°

[mirek1017]

thank you so much 

[Matthew Hajicek - Singularity]

Or use the "Threadmill" operation.

[mirek1017]

On 3/15/2017 at 8:22 AM, gcode said:

Use a Ø1.308" circle to drive the toolpath

set the taper angle to 1.7833°

One more think .The manual mashinist use special taper ream before Hi use tap.When I will be use thred mill I should do it the same think,or make biger hole ???

thanks 

[gcode]

17 minutes ago, master80 said:

One more think .The manual mashinist use special taper ream before Hi use tap.When I will be use thred mill I should do it the same think,or make biger hole ???

thanks 

The Carmex insert you are using has the correct geometry and it is not necessary to ream the hole with a tapered reamer

[mirek1017]

18 minutes ago, gcode said:

The Carmex insert you are using has the correct geometry and it is not necessary to ream the hole with a tapered reamer

thanks one more time 

[gcode]

This is a link to Carmex's threadmilling software

You will find it  very useful for selecting threadmills and programming threadmilling toolpaths

http://www.carmexusa.com/content.aspx?file=customerpages/software.htm

 

(click on the link that says "Mill-Thread Software)

 

 

[mirek1017]

20 hours ago, gcode said:

This is a link to Carmex's threadmilling software

You will find it  very useful for selecting threadmills and programming threadmilling toolpaths

http://www.carmexusa.com/content.aspx?file=customerpages/software.htm

 

(click on the link that says "Mill-Thread Software)

 

 

thanks

 

[gcode]

Here is an old X9 file doing a 1"-11.5 NPT thread using a Carmex helical flute thread mill

Drill size is Ø1.141" x 1.26" deep

 

This toolpath would normally cut a little small and require .003/.004 of CDC to gage properly

 

CARMEX 1-11.5 NPT.mcx-9