On 07/04/2014 12:24 AM, Gene Heskett wrote: > > I've broken several of those 1/32 SC mills, trying to cut deeper than 1.5 > thou per pass and faster than 2.5 ipm. Brass sheet (door kick panel from > ACE Hdwe) is 1/32 thick so I'm doing 25 passes to get 45 thou down in case Hmmm, I'd think the feedrate should be higher, and I'd expect to be able to cut more than 1.5 thou / pass. I'm more familiar with aluminum, but usually cut with a 1/8" carbide end mill at 2720 RPM (as fast as my mill goes without overspeeding the motor) and do about .050 steps down when plowing full width. That would be about .010" steps down on the 1/32" cutter. I generally run 10 - 15 IPM feeds. Again, that would scale down for the smaller cutter. You want to keep the cutter advancing through the material as fast as possible, to prevent localized heating.
You want to use an air blast to keep the chips from piling up. Jon ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
