thread milling

[Mickyd1]

Hi guys

I've got to do some thread milling on a job but I've never done any before,any helpful advice would be appreciated regarding parameters etc.

Thanks mick

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[TomD.inPDX]

This kind of thread? Yet another Thread thread - UTS Implementation

[SteveLucas]

Mick,

what type of thread internal external or npt? single point or multi thread threadmills The threadmilling routine is fairly simple to use since Creo1.

Here are the parameters I use for a 1/4 -18 npt multi thread thread mill in steel.

I circled the best parameter which is the start from hole axis. That used to be a pain in the butt as well as multiple passes but now in Creo 2 it's painless.

Steve

[PauldeRidder]

Steve,

I have used the threadmilling sequence several times (Only internal threads btw) but was never able to use it in combination with the cutcom option. Did you ever worked with this before? It would be helpful to use this option while i changed the diameter several times to get the right size in diameter, but when the cutcom option is working you can change that at the machine.

Best regards,

Paul

[SteveLucas]

Cutter comp works in threadmilling. Just make sure you have a leadin leadout set and turned on.

[PauldeRidder]

Ok that means it's me not doing it properly. will give it another try. Thanks for the info Steve

[PauldeRidder]

I got it working Steve, thanks for the advice!!

[SteveLucas]

Happy I could Help you Paul. Thats what this is place is for manufacturing users helping manufacturing users.

Hopefully Mick is picking up on some of this stuff for threadmilling as well.

[Mickyd1]

Hi guys

Thanks for the help,I havnt tried it yet as am still waiting for my multi thread cutter. Hopefully will be in Wednesday.

Cheers mick

[SteveLucas]

Mick,

The only thing I will say is take it slow and easy with lots of passes starting inside the thread diameter until you get some confidence. I would rather it take an extra 5 minutes to cut the thread. It's not much fun to snap an expensive threadmill off on your first try.

Steve

[Mickyd1]

Cheers Steve,

I've been wanting to do some thread milling for a while so I've got my chance. Will have a practice first ,does thread milling always start from the bottom of the hole ?

[SteveLucas]

With Multi thread threadmills yes. Start from axis and exit from axis is your friend!! I would use it. Play with the parameters to see what they do.

[razmosis]

Be aware that due to the lead in that the machine will go to a z depth slightly lower than the depth you specify as a blind depth. I bottomed out on a shank of a small threadmill early on in threadmilling by a thousandth or so.

[Olga]

Hello, Michael! I'm interested in Thread Milling tapered threads with an angle of 1.79 degrees per CREO3.

We get in the path of the 3 coordinates lines. Radius compensation is incorrect?

Привет, Майкл! меня интересует резьбофрезерование конических резьб с углом 1,79 градуса в CREO3.

Получаем траекторию перемещения в 3-х координатах линиями. Коррекция на радиус не отрабатывается?

[gkoch]

Hello Olga,

can you explain further, what you mean with "get in the path of the 3 coordinates lines"?

Radius compensation is something you can define, but not really simulate in Creo, since the actual compensation value will be added on the machine.

Apart from this: It seems the original thread was rather generic on how to start with thread milling, while you seem to have a specific issue. Hence it may be better to open a new thread (this doesn't force users to go through a lot of non-related old posts to get to a new question).

But maybe you already did this? I saw you also opened this thread : threadmilling in creo 2.0

Or are these two different issue?

Gunter

[oyudina]

Hello, Gunter!

sorry my bad english!

can you explain further, what you mean with "get in the path of the 3 coordinates lines"? - we get Move around lines 3 coordinates:

X17.275 Y1.95 Z-2.428

X17.697 Y1.802 Z-2.44

X18.076 Y1.564 Z-2.452

Radius compensation will not work.

when milling holes for threading

one question

[gkoch]

OK, what I see in the picture, is that there are two issues (maybe related with each other, maybe not):

1. CUTCOM command is missing in the output
2. There is a strange movement down from one thread to another

ad 1: Assuming the parameter CUTCOM ON is set, there normally needs to be lead in and lead out for appropriate CUTCOM commands output - I see in lead in, but not lead out.

ad 2: This is really strange! Are these two different thread definitions?

Maybe you need lead out and lead in between them to avoid the tool simply stepping down?

[shaanmech]

how to create program for variable pitch threading sequence, can it be created in turning itself or it requires mill-turn???????????