Thread mill 304sst

[Tinhman]

Good morning guys,

I have a job coming and it needs 2 x 1/2-13 x 1.0 dp, 4 x 3/8-16 x .75 dp thread.

I have only ONE chance to get it right.

My first choice is thread mill it, so i am going to need alot of help about tool and cutting parameter.

What is the best tool for 304 SST?

What is the size hole, cutting speed and feed?

How many rough pass and finish pass should i take.....?

Thanks in advance.

[Pilot Plant Supervisor]

When I need precision threads, I use Micro 100 threadmills such as TM-290-16 (for your 3/8 hole) and drill with Guhring carbide drills (preferably coolant fed). I use the standard tap drill size for 75% threads and write a simple helix program with cutter comp. I add .01 dia. or so comp to the tool and run. Keep checking with go/nogo thread gage and decrease the amount of comp NO MORE than the difference between go/nogo pitch diameter and run again. It's definately not the fastest way to do it, but when your part costs as much as the machine, you don't want to take any chances. With the Micro 100 tools, I use the recommended SFPM for the material I am cutting, and about .0005 per tooth feed.

[Josh Kinney -Elite Engineering]

Call Carl and he'll get you setup. Half the cost of the others and from my experience last longer...

 

http://www.lakeshorecarbide.com/threadmills.aspx

[SpecialtyTool]

Call Carl and he'll get you setup. Half the cost of the others and from my experience last longer...

 

http://www.lakeshorecarbide.com/threadmills.aspx

 

Do you use their other cutters besides the thread mills? Ive been looking at some of their tooling and I like their pricing.

[Tinhman]

Thanks for the info. on the cutter.

How about cutting speed and feed guys ???

it seems every body enjoy the holiday alittle early this year.

[jeff]

Do you use their other cutters besides the thread mills? Ive been looking at some of their tooling and I like their pricing.

 

I use their threadmills and their ZrN coated endmills for aluminum, they have been performing just as good as OSG Blizzards that I used to use exclusively, and at 1/2 the cost.

[Josh Kinney -Elite Engineering]

The chamfer mills are my favorite

 

All his stuff works great. I've had him make a lot of custom profile cutter and never been disappointed!

[Josh Kinney -Elite Engineering]

How about cutting speed and feed guys ???

 

Call Carl and he'll tell you everything you need to know. I believe the website has a thread mill chart also.