cosmos_275
Hot Rolled
- Joined
- Jun 9, 2015
I'm not sure what I'm doing wrong. I happened to check the toolholder that my finisher (for AL) lives in and I find fret marks. It's not all that old and has only housed a couple end mills. I don't do much besides finish passes with it. I run it at 8000 RPM and 80 IPM so about 3 thou per tooth. My roughers (run at 9k RPM and shown above in picture) and facemills which do far more work have no fret marks.
My only thought is it's a frequency thing with the 8000 so I'm going to slow it down and put a new holder in there. Any ideas what could be going on here? S500X1 no dual contact.
Another observation, as I'm taking the end mill out, I ground a small flat for the set screw and it's pretty close to the tail of the end mill, about 3/8" from the very end. I'm wondering if that's a no-no. I going to move it up 1/4" which is all I can before the flutes go into the holder.
My only thought is it's a frequency thing with the 8000 so I'm going to slow it down and put a new holder in there. Any ideas what could be going on here? S500X1 no dual contact.
Another observation, as I'm taking the end mill out, I ground a small flat for the set screw and it's pretty close to the tail of the end mill, about 3/8" from the very end. I'm wondering if that's a no-no. I going to move it up 1/4" which is all I can before the flutes go into the holder.