3D Contour Help

[Ocean Lacky™]

This one's done. Now, I'm workin on the opposite hand

 

We've got a Dapra 1" ball insert, but it sticks out so far in the 40 taper it just chatters. Shoulda finished this up in the 50 taper bridge mill just sittin in the corner

[Müřlıń®]

ok well i am downloading a file called Ocean11 in the Mcx2 folder to show ya what I do sometimes...

 

HTH

 

I didnt add stock so if you want to stay away from the wall I would add a couple thou stock if you use my method.

 

I only used the final pass

 

you can use as many passes as needed to remove the excess...working from the inside out...

[Ocean Lacky™]

Thanx Murlin. I'll look at it as soon as I get a chance.

 

Out of curiosity, since I know you're familiar with this material....If you were going to do this job......what kind of tooling would you use to rough this out of a new die block? speed/feed depth of cut?

[Müřlıń®]

I would use an a high feed mill to start off with. We use ingersol 2" and 1.5".

 

The 2" is a 3 flute and we run @ .05 DOC at 100 IPM feed...650 RPM...

 

Might have to slow it down a tad for Sommers dieblocks...they make some tuffer stuff.

 

But the Finkle, FX2 and WF, run pretty good at those speeds even on an interupted cut.

 

I think they have some Mitubusi High feed mills out there too. They work pretty good also.

 

We use the Iscar, but the inserts don't hold up as long but for a 40 taper they are easier on the machines vs the negative ones...

 

We have HAAS VF6's with 40 tapers so we have to take it easy on them...

[Ocean Lacky™]

Murlin, Thanx!

 

It would seem I'm in the ballpark, then. Right now, I'm testing a Dapra 2" Toroid shell mill with .5 dia button inseerts. So far, it's doing a .04 DOC at 1050 RPM and 180 IPM. Inserts are holding up well. I think we'll keep it!

[Müřlıń®]

YW man

 

You running 180IPM in a 40 or 50 taper?

I am very interested in that cutter, I looked it up.

 

 

Sorry told ya wrong the 2" was a 4 flute...

 

I wondered why our RPM's were that much different...

 

I bet they could run @180 if they would grow some balls out there...

 

But alas, I cannot make these guys do anything they don't wanna do...

 

Actually if ya look at the geometry of the high feed inserts they might as well be a button mill....

 

I bet they would get more out of a button mill they only have 2 sides with the ones they are using...

 

Anyways glad to be some help to someone

[Ocean Lacky™]

it's out in the 50 taper. just went out and checked on it, gave the inserts a spin, it's knocked an inch off of a die the same size as the one in the file i uploaded earlier. the inserts are on their third edge out of eight now.

[jmayo]

we used to use iscar feed mills but if you chip an inert you nmight as well buy a new tool. we now use a walters tool cutting 4140 on a haas vf7 with a 40 taper we rum .040 d.o.c. 1923 rpm 268 ipm it is very impressive

[Müřlıń®]

quote:

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we used to use iscar feed mills but if you chip an inert you nmight as well buy a new tool.

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Ya that's why we only use them on boiler plate...

 

No way we could cut die steel @ 260IPM...at least not for very long.

 

Maybe FX2 with a bunch of insert changes but you would have to stay on top of it...

 

I like to make lights out proggys....so I will sacrafice some time just to be sure...

 

One thing about the high feed vs the button is in the corners the Highfeed has less surface bearing so you can run them faster comming up to a wall...

 

 

Hey Ocean, you use the Highfeed option over there?

[Ocean Lacky™]

quote:

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Hey Ocean, you use the Highfeed option over there?

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In Mastercam? no, never had much luck with it, or the time to try and figure it out.