1/4 - 20 internal threads

[Runner4404spd]

i need to turn about 500 bushings with 1/4-20 internal threads. i'm running mach 3 turn and it have a setup for threading. however, i don't know if i can drive a tap with this as i can't seem to find single point turning tools small enough to make the thread.

[mxtras]

Can the threads be tapped with the use of a tapping head?

Scott

[Runner4404spd]

can a tapping head be used horizontally? i don't mind using one, i would need to get one, i just want to see if what i have setup can do it already?

[WayneHill]

Runner4404spd,

We use Micro 100 tooling for 1/4-20 ID threading.

http://www.micro100.com/inch/it.html

http://www.micro100.com

[Runner4404spd]

Wayne,

thanks for the great link. i'm turning 304 stainless, any experience using the micro100s on this material?

thanks
Jerry

[mxtras]

I use a tapping head on my lathe tailstock quite often. It's not often that I turn threads as my lathe is not all that great in this arena. I prefer to tap when possible.

Scott

[Runner4404spd]

Scott,

how do you work the tapping head in the tailstock? i'm familiar with their use on a mill, but have never used one on a lathe. also i have this setup for cnc operation on my 9x20. i can mount the tapping head in my gang plate, just curious how it works in a blind hole?

[WayneHill]

Yes. They work on 304 SS, 303 SS, Titanium.

I will look up speeds for you tomorrow when I'm back at my work computer.

Wayne

Originally Posted by Runner4404spd Wayne, thanks for the great link. i'm turning 304 stainless, any experience using the micro100s on this material? thanks Jerry