Thread mill external NPT thread

[cutting edge]

Just like the title says. Is it possible to thread mill external NPT threads? It would be on the end of 22mm square bar.

[laka]

We're threadmilling external 2" NPT threads on our mill as we speak.

Check out http://www.advent-threadmill.com/

[cutting edge]

Thanks for the link! Now that I have found the tool I just have to learn how to use it and program it. I have never came across the situation where I needed to thread mill. This job would be 1,000 parts per week so I need to figure out how to do it pretty quick.

[laka]

If you have a decent CAM program it should be a piece of cake.

[cutting edge]

I'm using Gibbscam 2006. It's just a matter of knowing where to plug in the numbers.

[Kevin Taylor]

Search Kiwi's threads I found a post on pipe threading milling that he gave a link to a program that generates the G code My bobcad has a spirel generate but I haven's got it to give me all three XY&Z #'s just one of the many bug's
Good luck Kevin

[laka]

In Gibbs 2006 it should be under "Plugins" and "Create tapered thread"

[cutting edge]

I found that in gibbs last night. I haven't threadmilled before so it is new. I bought a threadmill from advent. It is an M8x1 multiple thread. If I understand correctly you start and the bottom of the thread and make 1-2 360* rotations moving up in Z. I'm not sure what values to plug into gibbs to get the right toolpath.

Here is a screenshot of what I'm working with



The tool diameter is .232.

[laka]

You want to make a NPT thread using a metric thread form? Or do you just want to make a straight thread? What is the exact thread form/pitch you're looking to make?

Either way, you'll want to use an endmill to turn the top of your square into a circle.

[cutting edge]

Sorry, I am jumping around on you. This is a different part. It needs an internal Metric M8x1 thread through the center of it. The thread has to be .280 deep. That is critical.

[laka]

Fill in the prompts in the threading window and you should be good to go.

Turn on "balloons" if you need more info on a certain area.

[cadman]

Originally Posted by cutting edge I found that in gibbs last night. I haven't threadmilled before so it is new. I bought a threadmill from advent. It is an M8x1 multiple thread. If I understand correctly you start and the bottom of the thread and make 1-2 360* rotations moving up in Z. I'm not sure what values to plug into gibbs to get the right toolpath. Here is a screenshot of what I'm working with The tool diameter is .232.

The standard threadmill process will only cut straight threads. For tapered threads you need to use this plug-in: