Thread Milling

[mrsammy]

Hi guys,

I need you guys help on thread milling. The truth is, I didn't have any formal training on Mastercam. I just learn it by my own.

I need to tap a depth 16mm blind hole using M10 X 1.5 tap, but the DWG required the tapping depth of 14mm. I tried several times with normal tapping, but couldn't achieve the 14mm depth required. So I left with thread milling option, but I don't know how.

I hope you guys can help me on this.

I'm currently using Mastercam 9.1 and the material I need to tap is Stainless Steel.

An example on Mastercam 9.1 on how to create a thread milling toolpath is very much appreciated.

Thank you


Regards,
David Samuel Rosario
Malaysia

[Limpan]

Hi, what is the diameter of your thread cutter, and how many teeth?

[mrsammy]

Hey Limpan,

Thanks for your quick reply.

Thread cutter diameter is 8mm with only 1 active teeth.

[cncnitro]

Hi mrsammy,

I think this is just what the doctor ordered.
Good luck!

http://www.streamingteacher.com/samp...9_milling.html

[Limpan]

Ok, well, diameter 8mm is very tight for making M10 threads but I still think it could work.
I'll have a look at it later tonight (it's almost 7 PM here) /Limpan

[Limpan]

Hi again, try these settings, see picture.
Limpan

[cadcam]

M8 thread hob is not that small as O have done allot smaller. looking a Lipman's setting the pitch is correct review from the picture of my settings on a project I have running now. this from X4 but the pitch is not metric unless you are use a Metric Machine and post. Take the 1.5mm /25.4 for the pitch.

[mrsammy]

Sir,

Thanks for the reply. I appreciate it very much.

[mrsammy]

Limpan,

Thanks so much for your help my friend. I appreciate it very much.
Nice to know in here so many good people like you.

One more thing...is the feed rate and rpm using the same normal tapping calculation?

[Limpan]

Hi mrsammy, as you are milling your thread instead of using a tap cycle you don't have to calculate spindle speed vs feedrate depending on the thread pitch. If your thread cutter is made of solid carbide i would recommend a spindle speed around 2000 rpm, and start with a feedrate around 150-200mm/min for stainless steel. If the cutter is made of high speed steel (HSS) you should reduce the spindle speed to about 800 rpm and feedrate about 60-80 mm/min. (Keep your hand on the feedrate override pot.)

Limpan

[mrsammy]

Dear Limpan,

Thank you so much for your useful information. As you already know, I did not have any formal training on mastercam (I just learn through my experience).

I feel very lucky to know that so many people out there have a good heart like yourself.

Thank you once again.

Dave

[Smrkoul]

Hi mrsammy,
what is the tool manufacturer? I am looking for single thread cutter. I found only cutter for aluminium. Thanks