640M Thread Milling question

[Rcky123]

Can anyone help with thread milling in mazatrol. In this particular case the thread is a 1 1/16-12
I have tried to use the following procedure:
1- in tool data eneter tool as tap 17s-16
2- entered actual dia of thread mill into size Dia=.687
3- Described tool as a Floting Tap

Went into program Called up Tapping and set TPC Unit D49 to 0
Unit nom major pitch tap dph chmf
Tappng un17s-16 1.0625 .0833 .5 0

tool nom hole hole-dep pre-dia pre-dpt rgh Depth
Tapun17s-16 1.0625 .968 .75 planet ? fix p.0833

returns message no tool in mag

my question mark is(what is this block for?auto returns the value of .002)

this is not C-SP or my F R

Thanks for any help Ricky

[ajl6549]

I think you have to use manual programming, write it out long hand and call your tool an end mill.

[mikielives]

you have to wrire a manual program. I have developed a "work sheet" style fill in the blank outline for thread milling in any mazatrol machine that is capable of it. It ramps in and ramps out and you can use it for taper pipe threads, or extra deep threads. let me know if you want a copy with instructions.

[apresnall]

I've done it before. I'm going to try and get it going again today. It sounds like you are on the right track.

I've gone thru all the books that I have and I have, that have not gone home with people and their good intentions to learn the control. The manual is real bad about being specific with the info and I still don't understand Jenglish. I don't know what is going on with the tool data. I'm sure you assigned the tool in tool layout first. I'll post if I get it to work.

[mrwright]

Use a tornado mill cycle and put zero for the bottom finish to keep the last thread from being a complete circle. Tell your pitch the same as the thread pitch and set-up your thread mill as an endmill. This is the easiest way I have found.

[apresnall]

Tried it today, but didn't use the tornado.

In a tapping unit you can select planetary for the tap. Just input the diameter in the tool data and you are good to go.

The cycle works different than the tornado because it goes straight to the bottom of the hole and does 1.5 turns rather than heli cutting each thread. Try it, works good.