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  #41 (permalink)  
Old 04-16-2009, 12:24 AM
Stainless
 
Join Date: Oct 2006
Location: Santa Cruz, CA
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Gumby, that endmill you posted looks just like the one I got today. My poor cellphone camera doesn't focus, so up close pics suck.
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  #42 (permalink)  
Old 04-16-2009, 12:40 AM
Aluminum
 
Join Date: Apr 2008
Location: Salem, Oregon
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Quote:
Originally Posted by Perry Harrington View Post
Gumby, that endmill you posted looks just like the one I got today. My poor cellphone camera doesn't focus, so up close pics suck.
You mean the 4 flute tool? There are some differences but it is a similar style of tool.
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  #43 (permalink)  
Old 04-28-2009, 10:08 AM
StreetSpeed's Avatar
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***Update***

For some reason I can't edit the original post, so I shall add here:

LakeShore Carbide Variflute Rough/Finisher, 360012XRF - Not sure on the price
ZrN coating
10,000 RPM - 86.4 ipm 7,500 RPM - 108 ipm
27 ci/min, 6.7 hp

A very healthy second place. The tool has tiny slots on the teeth, but I don't see where it affects the finish in any way that would bother me personally.
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  #44 (permalink)  
Old 04-28-2009, 11:28 AM
Hot Rolled
 
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SS, is that a new design endmill they sent you to test, I don't see that part number on their website.

Thanks,

Paul T.
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  #45 (permalink)  
Old 04-28-2009, 12:16 PM
Titanium
 
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Location: Waukesha, WI
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Quote:
10,000 RPM - 86.4 ipm 7,500 RPM - 108 ipm
Did you accidentally reverse your feedrates here?
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  #46 (permalink)  
Old 04-28-2009, 12:33 PM
AF-METALS-TECH's Avatar
Aluminum
 
Join Date: Jan 2008
Location: Moody AFB GA
Posts: 120
Default Hands down

Fastest metal removal I have ever used The MINICUT™ Super Cobalt, ripped right through AL. http://www.minicut.com/main.php?sect...cts&category=1 I had one squirreled away for my own use and let someone borrow it now its toast.
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  #47 (permalink)  
Old 04-28-2009, 12:33 PM
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ARB ARB is offline
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Location: Granville,NY,USA
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Paul,
Hopefully they will get this cutter on their site soon.
I have been testing it for quite a while. It is a great tool. One of the real benifits to it, is chip management. The chips are much easier to evacuate on a vertical. It also uses less HP and runs real quiet.

If you call them and ask for the tool I am sure they will sell it to you. I believe they have the first production run done.

On a lower HP machine I have also seen a higher MMR at a lower RPM. I see my max at around 7K. With some real power I think this tool would really fly.

It has been hard not talking about this tool until now. I am a huge fan of this tool.

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  #48 (permalink)  
Old 04-28-2009, 01:14 PM
fmari --MariTool-'s Avatar
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When I first started carrying 3 flute end mills I was not looking for something too specific. I wanted a cutter that was a good general purpose end mill that was low in cost had a decent geometry and coating for soft metals and Alum.

After some feedback I think I found a great aluminum specific end mill. So far testing is very positive. One of my customers are getting better performance with this tool in its uncoated version compared to a ZrN from someone else.

The helix angle is 38 deg and The cutting surface has 3 lands. Once testing is complete I will have these in uncoated and ZrN coating. I will also have some with a small corner radius for serious feeds per tooth.



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  #49 (permalink)  
Old 04-28-2009, 06:06 PM
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Quote:
Originally Posted by Dave K View Post
Did you accidentally reverse your feedrates here?
Nopers. The Haas power curve (or lack thereof) means more power is available at lower RPMs, even though the chip load is higher. On a REAL machine, this would more than likely not be the case.
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  #50 (permalink)  
Old 04-28-2009, 06:21 PM
Aluminum
 
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Location: Salem, Oregon
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Quote:
Originally Posted by StreetSpeed View Post
***Update***

For some reason I can't edit the original post, so I shall add here:

LakeShore Carbide Variflute Rough/Finisher, 360012XRF - Not sure on the price
ZrN coating
10,000 RPM - 86.4 ipm 7,500 RPM - 108 ipm
27 ci/min, 6.7 hp

A very healthy second place. The tool has tiny slots on the teeth, but I don't see where it affects the finish in any way that would bother me personally.
That was a lot closer in results to the Gorilla Mill than any of the other tools but still a 10% difference in feed at 7500rpm and an 8% difference at 10krpm. It is too bad you don't have a price on the tool.

That makes me wonder how SGS's 3 flute tool compares. Any update on getting that mean looking Mazak?
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  #51 (permalink)  
Old 04-28-2009, 06:26 PM
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No Mazak in the foreseeable future. It appears the scope of our customers' project was perhaps a bit less than we were initially led to believe. Disappointing, but, there are lots of fish in the sea. Just gotta find that big one.
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  #52 (permalink)  
Old 06-15-2009, 04:21 PM
Plastic
 
Join Date: Oct 2008
Location: USA
Posts: 5
Smile Check this out - 900IPM!

FYI....just had a killer test with a brand by the name of Helical. We ran a 1/2" 3 flute tool on a HAAS VF3 Super @
12,000 rpm
900 ipm
.025 clpt
.500 adoc
.200 rdoc
Pocketing with a 1/2" 3-flute "uncoated" SC chipbreaker and it looked new after 5 parts(ran out of material) we cut cycle time by more than 50%. Check out their website www.1helical.com and you can see some incredible videos.

Its important to note we also utilized a toolpath program thats just as incredible as the tool, called VoluMill. You can check this out at www.volumill.com

Cheers,
ST
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  #53 (permalink)  
Old 06-16-2009, 04:14 AM
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'Preciate you resurrecting an old, informative, and non-biased thread with Spam.

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  #54 (permalink)  
Old 06-16-2009, 11:26 AM
Hot Rolled
 
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Quote:
Originally Posted by Tiehen View Post
FYI....just had a killer test with a brand by the name of Helical...
Ok Tiehen, now that you've been busted, how about sending a couple of those endmills to StreetSpeed so he can get some numbers on them, if he's interested in doing that.

Paul T.
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  #55 (permalink)  
Old 06-16-2009, 12:22 PM
Cast Iron
 
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Location: Paradise, Ca
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Quote:
Originally Posted by Tiehen View Post
FYI....just had a killer test with a brand by the name of Helical. We ran a 1/2" 3 flute tool on a HAAS VF3 Super @
12,000 rpm
900 ipm
.025 clpt
.500 adoc
.200 rdoc
Interesting, but the ss machines are limited to 833 IPM feedrates.

I smell a rat.
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  #56 (permalink)  
Old 06-16-2009, 12:36 PM
Plastic
 
Join Date: Jun 2009
Location: Gig Harbor Wa
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I have a small mill (2 HP round column Grizzly, converted to CNC), and do mostly aluminum work. I use microdrop coolant, with lots of air flow. Being limited to 2K RPM, my feed rate is low, but all the same, I've found that my best performance by far is to use a single flute end mill (0-Flute). Anything else gets aluminum build-up on the flutes, and snaps the bit.

I get very nice looking chips, and can sustain twice the feed rate as with a 2 or 3 flute mill. My limitation is always flute clogging, not speed, HP, etc.
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  #57 (permalink)  
Old 06-16-2009, 02:15 PM
Hot Rolled
 
Join Date: Jan 2007
Location: Flushing/Flint, Michigan
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Quote:
Originally Posted by Tiehen View Post
FYI....just had a killer test with a brand by the name of Helical. We ran a 1/2" 3 flute tool on a HAAS VF3 Super @
12,000 rpm
900 ipm
.025 clpt
.500 adoc
.200 rdoc
Pocketing with a 1/2" 3-flute "uncoated" SC chipbreaker
Cheers,
ST

Impressive results, but something wrong with your math here.
May I suggest you research the difference between "advance per rev" and "effective chip load per tooth" when at less than 100% cutter engagement.
Tain't no way you've got a .025 chipload here.
This is the basis for most high speed machining software, lower the engagement and you can feed way,way faster, in the old days it was know as "radial chip thinning" (everything old eventually becomes new again).
A concept you can really take advantage of if you've got a linear motor machine that will feed at 1800 IPM.
Bob
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  #58 (permalink)  
Old 06-21-2009, 01:12 AM
Plastic
 
Join Date: Sep 2008
Location: Ontario, Calif
Posts: 19
Question

Any of you guys want to debate and suggest a specific grind? I could juggle a few test grinds on the cnc, and we could document the results for all to see.
Terry
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  #59 (permalink)  
Old 06-21-2009, 05:55 AM
Titanium
 
Join Date: Dec 2007
Location: Southeastern US
Posts: 2,227
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Since I'm in tool testing phase right now, if anyone has a coated, aluminum specific end mill they would want me to test, send me a pm. Material is 12%-14% Si proprietary Al alloy. If it lives and cuts well in this stuff, it'll blow 6061 away.
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  #60 (permalink)  
Old 07-30-2009, 06:00 PM
Aluminum
 
Join Date: Apr 2008
Location: Salem, Oregon
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Quote:
Originally Posted by Tonytn36 View Post
Since I'm in tool testing phase right now, if anyone has a coated, aluminum specific end mill they would want me to test, send me a pm. Material is 12%-14% Si proprietary Al alloy. If it lives and cuts well in this stuff, it'll blow 6061 away.
I'm a little late to this party but shoot me a PM with your contact info before the end of tomorrow and I'll drop a tool off in the mail for you to test before I deploy again (this Saturday).
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