OT: Endmills smaller than .001 !?!?!

[Psychomill]

Have any of you worked with these yet??

 

PMT tools

 

Click on the "Nano Tools" link....

 

[?Mark]

quote:

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smaller than .001

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You will not be getting a whole lot of chips with that tool, will you?

 

Wow, under .001...

[kunfuzed]

Wow! I'd really like to see their application.

[YoDoug®]

I am programming a part to go in the machine tomorrow that needs a .01 dia ball nose to do some of the finish detail. I had to go to the test lab and use the microscope to check if the endmill was good.

 

I can't even imagine trying to run a .0004 dia end mill. How do you get the runout out of it? .0002 of runout on a .0004 em sounds like an "endmill killer" to me.

[Zoober]

What chip load do you run? I don't have enough decimals in my feed rate control.

[TheePres]

Would love to send one of these out to tool my re-sharpening guy.

[Zoober]

We are grinding whistle-notches now for our .0002 endmill holders.

We sent one to Japan, to show them what the USA can do with tooling, and they sent it back.............................. with a cross hole in the shank!

[?Mark]

ROFLMAO

 

Good one Robert

[Psychomill]

Hadn't heard that story about the drills eh Mark (Where Roberts story is adapted from)....

 

So, let's see.... They claim to be able to make an endmill with .0002 cutting diameter. Considering that many tool holders spec out at .0004 @ say 4.0" from the nose... If you used an extension in one... HMMMM

 

I guess you'd be cutting the part with an "ice cream scoop" effect... or kinda like hogging out a pocket with a treepan...

 

[Guest]

Wonder if you can get those with a 10 X Dia LOC

 

[Jerosu]

Or a serrated "rougher"

[Flycut]

Now engineers are going to start requesting .0005 rads in every corner.

[Guest]

quote:

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Now engineers are going to start requesting .0005 rads in every corner.

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You think you could spin one of those down for me so it'll have .400(10.16mm for you metric guys )

clearance

[Psychomill]

LOL ....

 

gives new meaning to "minimum radius".....

 

And they offer it in "stub and standard length of cut". .... Which means exactly what??

 

Yeah, how about an HSM style??

[?Mark]

Coolant thru anyone ?

 

Our 1000+ psi would blow it right out...

 

How about checking it with a tool probe....

 

Possibilities, possibilities...

 

Rob, you're NOT actually using one, are you?

[Thee Rickster ™]

I need one with a .0001 corner radius.

 

A friend of mine had to find an outsource to drill

.002" holes for something in the medical industry.

[Psychomill]

No Mark.... I came across it on another forum. Thought it was interesting enough to see if anyone here dealt with these....

 

My guess, you'd have to at least run a 100,000rpm air spindle,... which BTW only works out to about 5 SFPM (Ø.0002 endmill) Then, if you figure on many tools have a FPT ratio of about 1-2% of cutting diameter... gives you a feed of .2-.4 IPM...

 

I sure hope that slot isn't too long...

 

So, let's see....

1000SFPM for aluminum = 19,085,000 rpm (give or take)

I'm picturing my 50 taper machines spinning that right now.... NOT!!

 

quote:

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I need one with a .0001 corner radius.

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That would make it a Ball endmill....

 

[LT_mechead]

Tools this size are in the domain of the wierd. Suppose you had a waterjet pump for your through spindle coolant. It would only require the lightest of touches to keep it in the holder.

 

60,000 psi on .001" diam endmill = .047 lbs.

 

I guessed the force was small, but not that small. Even a 1000 psi system would only put 12 lbs of push on the 1/8" shank. It seems like it should be more than that, but it ain't.

[LT_mechead]

You might make some progress if you got one of those circuit board drill spindles that run at 250,000 RPM.

[Zoober]

I've used drills in alum. down to .016, and the results were pitiful.

We only had 12000 RPM - about 50 sfm, and they loaded, broke, ran out (whipped from 12000 rpm centrifigal force and side coolant pressure), tool holders were tough to balance, etc....

 

Oh, and don't use an air hose to blow chips off the drill!!

I could not imagine trying to side cut with something under .015. The shop I am at now is mainly running 800mm horizontals, 50 taper. Lotsa balls, but not much finesse.

[Fig sign]

I would not advice high RPM .

At least not more than 20000 .

I would consider such a mill extra long and unrigid

 

For mill 0.005 mm on copper taking 0.001 mm height I would run it s20000 F3

or S8000 F2 (METRIC)

[pip]

It is nano technologie, which means it is 3 times stronger than carbide.. We are looking into using this type of cutter in the future..

[Camdude®]

i've programmed a job for the gov. that required a .005,.003 & .001 dia endmill. had to check it with a laser probe before each toolpath to make sure it was good. ran on a high speed graphite mill with all the bells & whistles.

Talk about a P.I.T.A.

[Hardmill]

Have any of you seen the new 3 flute .0005 Ball endmill offered

by OSG ??

 

 

PEACE