What You Need to Know About Thread Milling

[@douglasrizzo9210]

Excellent video. Great work, Jamie! As a former Trainer and Applications Engineer, I can tell you, it was presentation well done! Allied rocks!

[@alliedmachine]

Thank you so much for the compliments! We hope you'll tune in to our other LIVE events in 2022!

[@ronlaury6388]

Excellent presentation! Keep up the good work!

[@alliedmachine]

Thank you! We have more great LIVE events coming up in 2022, so be sure to check back soon!

[@andysimoeslacerda]

Congratulations and Thank you. From Brasil.

[@ricardo-iw9sq]

Interesting, Im trying to thread mill an M8 thread and the haas gen2 control, the vps produced the mill program, the threadmill is 5.91mm dia hand have drilled it 6.8mm and for some reason its throwing up a error 367 cutter comp interference, im doing 2 passes and the 3rd is the spring pass. Im a total newb to cnc and cant find an answer. Im using thread mill because im cutting P20 and when I was doing them on a manual mill the taps kept breaking even brand new out the box and it didnt matter which brand, in 20+ years I have never broke so many on this job and i would spend more time with the tap disintegrater than on the mill.

[@zaz4667]

I have a question for the layperson. This is not like Rigid tapping where the revolution of the spindle has anything to do with the thread pitch, correct? The program will do the helical movement in x, y, and z and with one complete thread revolution, you end up at the same x and y coordinate just with a 1 thread lower pitch in z movement. But you can adjust the spindle speed, correct? It is not relevant to the machine movement, correct? Spindle speed is only relevant to material type and material removal rate per tooth. Is that correct? Another way to ask the same question is - I can use the same program multiple times and adjust the spindle speed to various speeds and to wont matter as the program runs because it is not connected like Rigid tapping - Correct?

[@AlexJoneses]

yes you are correct in your assumptions, this is not rigid tapping

[@impactodelsurenterprise2440]

How does a thread mill account for the thread flank relief for a very coarse pitch?

[@AlexJoneses]

pretend it doesnt exist

[@douglasrizzo9210]

Great tutorial, Rob!

[@huntercat12]

unless you conventional mill

[@alliedmachine]

Thanks for your comment. The great thing about thread mills is that you can conventional mill or climb mill! We would love to discuss further so please reach out to us with any additional questions: www.alliedmachine.com/Contact/Engineering-Support.aspx

[@muhammadkhairie4205]

hey, quick question, how to avoid from keep doing offset when the gauge failed to go ?

[@alliedmachine]

How much are you moving at one time? You'll have to do an offset, but it is more about reducing the amount of offsets needed because our goal is to help you be up and running for production as quickly as possible.

[@chauvinemmons]

I would not make more then Half of the total tolerance for the thread your cutting at one time if you're just shooting from the hip. You'd be better off to figure out what the PD is and make your offset accordingly. But the worst case scenario if you're at the absolute ragged minimum and you make an offset that is half of the difference between the minimum and the maximum it should put you in the middle and it may be a a few microns smaller in production so if you're still just barely off minimum you might want to throw a little more like a few microns at it so the push back from the cutter is accounted for in a full depth of cut.

[@chauvinemmons]

That's all fine and dandy but when you're trying to get $600 for a threadmill unless I can get 600 holes reliably out of the cutter I do not see the cost-effectivness common Sense tells me don't do it because the first time I break one I have to bring another tool in behind that how in the hell am I supposed to chase that thread I mean it's not impossible but come on.

[@alliedmachine]

Thank you for your comment. You bring up some excellent concerns that are very common in thread milling. Depending on the material, 600 holes can easily be achieved in many applications (even high temp alloys) when thread milling due to the low heat generated in the cut. To your point about chasing threads in the situation a tool breaks, the first thread on the thread mill is a qualified length from the tip of the tool. This makes it easy to touch off the tool and re-run the program. This is an easy process and is a time saver versus extracting a broken tap. We would love to discuss further and can even come to your shop and give you a free test of thread milling so you can put it to the test.

[@terrynaude284]

I thread mill with most of our work, especially with stainless steel and carbon steels. To be honest, they seem to last forever. I normally reduce the RPM and feed rate recommend. Blessings from South Africa.

[@kennethparent2936]

Ive gotten 2-3K plus holes out of 1 thread mill in Titanium and stainless. Paired with a good Dream drill from YG and they are the cheapest tools in the shop.

[@impactodelsurenterprise2440]

But isn't thread milling exactly why it's easy to rechase a finished thread, as long as the part is clamped back to its original orientation, your thread mill lead in at the same angle as before, as well as the Z offset. But $600 for a thread mill is way too much IMHO.

[@Hunter05ZA]

@@terrynaude284 if you don't mind me asking, what brand of thread mills are you using ?