OSG A Brand AT-2 R-Spec Threadmills

Started by kccadcam, November 14, 2023, 10:22 AM

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kccadcam

November 14, 2023, 10:22 AM
Anybody ran these? I'm looking at a bunch of 1/4-20 holes in Mic-6 plate.



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KC

A Million seconds is 12 Days
A Billion seconds is 31 Years
A Trillion seconds is 31,688 Years

Jeff

#1
November 15, 2023, 03:00 AM
Haven't tried those or any brand that has a style like that.
I wonder how round those holes are in that video, seems a little quick lol.

JakeL

#2
November 15, 2023, 10:48 AM
Quote from: kccadcam on November 14, 2023, 10:22 AMAnybody ran these? I'm looking at a bunch of 1/4-20 holes in Mic-6 plate.




Blind or thru holes?

I'm guessing you can't get away with one of these?

kccadcam

#3
November 16, 2023, 06:06 AM
I've seen that, what does the tap cycle look like?
I was trying to avoid pre-drilling, one and done.
KC

A Million seconds is 12 Days
A Billion seconds is 31 Years
A Trillion seconds is 31,688 Years

JakeL

#4
November 16, 2023, 06:41 AM
Quote from: kccadcam on November 16, 2023, 06:06 AMI've seen that, what does the tap cycle look like?
I was trying to avoid pre-drilling, one and done.

To be completely honest I don't know. I've seen them but haven't found an application to use them on yet.

By the video it looks like slow RPM plunge, then one or two full G04 rotations to put the threads on (thd mill cycle), then a slow RPM retract. Might need M19 to orientate the spindle in there a couple times too.

It also looks like it leaves a couple gashes down the side of the threads when it plunges/retracts. I'd guess that won't pass the thd spec.

Tim Johnson

#5
November 27, 2023, 11:17 AM
Vardex has better thread mills. The difference is OSG chamfer VS Vardex. If you want to chamfer the thread with OSG you're locked in to a certain depth with the chamfer segment at the top of the cutter. Vardex has the chamfer at the bottom so the depth is variable. I will be testing the Vargus next year since I am done for the year on December 13th.
FJB

kccadcam

#6
November 27, 2023, 12:20 PM
Quote from: Tim Johnson on November 27, 2023, 11:17 AMVardex has better thread mills. The difference is OSG chamfer VS Vardex. If you want to chamfer the thread with OSG you're locked in to a certain depth with the chamfer segment at the top of the cutter. Vardex has the chamfer at the bottom so the depth is variable. I will be testing the Vargus next year since I am done for the year on December 13th.
Which Vardex tool are you looking at?
I did not see one that creates the hole and the thread at the same time.
This OSG tool chamfers with the tip after creating the hole.
KC

A Million seconds is 12 Days
A Billion seconds is 31 Years
A Trillion seconds is 31,688 Years

Tim Johnson

#7
November 27, 2023, 01:57 PM
Quote from: kccadcam on November 27, 2023, 12:20 PMWhich Vardex tool are you looking at?
I did not see one that creates the hole and the thread at the same time.
This OSG tool chamfers with the tip after creating the hole.
Oops, I'm talking about the threadmill that helical drills and threads at the same time then chamfers the top.

It's called TM Solid TMDR. (Vargus) Without coolant the smallest thread is 4-40 and M4-.7. With coolant it starts at 1/4-28 and M6-1.



FJB

Tim Johnson

#8
November 27, 2023, 02:03 PM
Quote from: kccadcam on November 27, 2023, 12:20 PMWhich Vardex tool are you looking at?
I did not see one that creates the hole and the thread at the same time.
This OSG tool chamfers with the tip after creating the hole.
The one I saw only chamfered on the top. Our main supplier brought them in for me to look at. I told him I'm too close to vacation to play this year. If OSG has a bottom chamfering edge then I'm going to test both. Thanks for letting me know.
FJB
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