I run that cutter with an 2d adaptive toolpath at .004 IPT, so at 5000 RPM thats 60 IPM (and a .25" DOC)
The biggest problem is getting the chips cleared in a pocket op
EDIT: Actually had a youtube video uploaded
I need to slot a round profile about 3.75 inches in diameter on a 6061-t6 workpiece and I am trying to use a LSC 1/4 TAS EM. The reason for slotting is that I have screws in the way and the .25 EM can clear them when doing the profile. I am using a Pierson vacuum table and a top plate to hold the workpiece in place.
I am currently cutting with the .25" WOC and a DOC of .08 while running with a 20ipm feed rate along with a 10ipm for ramp and 5000rpm on my 1100.
I tried looking into using GWizard to see if I can speed things up and after applying all the settings I get a womping 90ipm for feed rate. This seems excessively fast so I wanted to know if anyone has any experience with running these TAS EM and what recommended feed and speeds can I really push them to.
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I run that cutter with an 2d adaptive toolpath at .004 IPT, so at 5000 RPM thats 60 IPM (and a .25" DOC)
The biggest problem is getting the chips cleared in a pocket op
EDIT: Actually had a youtube video uploaded
Thanks for reply.
I noticed that in my original post that I made an error with how I was describing the operation that I was performing. I was not meaning to say that I was doing a pocket op but rather I was slotting to cut out a disc that was 3.75" in diameter.
I am not sure if the 60ipm would still apply. It is only 1/4" thick workpiece so it is fairly shallow and I am using 2 fog busters aimed directly at the EM/slot in order to help with chip evacuation.
I use the 1/4" TAS. A few things to keep in mind
1 - If you have an ATC, be careful. It likes to pull out.
2 - If you have a power drawbar make sure its adjusted. same reason as above
3 - I've run it at .490 DOC, .100 woc at 90ipm with no issues. No ATC, flood with air blast, and my power drawbar is as tight as can be.
3 - Depending on how wide your slot is and how you're cutting the slot, you might never see 90ipm because the tormach cant accelerate that fast. With the above recipe, I see 90ipm during contour ops, but only 20-30ipm when I'm cutting a .300 wide slot with an adaptive toolpath.
Tormach PCNC 1100 Series 3 w/ Rapid Turn, Fusion 360
What a he heck is a LSC TAS end mill?
You can buy GOOD PARTS or you can buy CHEAP PARTS, but you can't buy GOOD CHEAP PARTS.
I do not have an ATC so no worries there. I really don't want to run it at max ipm but would like to see at least 30 or 40 ipm. I am cutting only .25" material that is being held down on a Pierson Vacuum table top plate. Unfortunately I have screws too close to the slot so 2d adaptive is not possible which is why I am left with only slotting. I have been doing multiple passes each with at 0.08 DOC and at 20ipm with 10ipm for ramping. Tthis has become quite a slow process.
I was thinking about doing a ramp at startup and have it settle at just about .255" and then have it continue the slot op at the .255" DOC. Of course this will give me WOC @ .25" and I would not want to drive it really hard especially since I have the workpiece being held down by vacuum. Any increase in ipm to help is what I am ultimately looking for.
Last edited by nodott; 01-19-2018 at 11:51 PM.
Lake Shore Carbide - The Aluminum Shredder.
LakeShore Carbide.com Carbide End Mills-Carbide Thread Mills - TAS ROUGHERS
Im my experience, if you don't have high pressure flood for slotting, better to go fast and shallow. Make smaller chips that are easier to get out.