On Tue, Nov 10, 2009 at 09:17:07PM -0500, Gene Heskett wrote: > > Assuming I keep the area wet with cutting oil at a high enough flow that I > don't wind up with a muddy slurry, but do have enough chips to act as a wick > and keep the mill wet from the cutting oil they absorb (or the oil level in > the tuna can is high enough), and the 1/8" 2 flute carbide upcut spiral mill > is turning 2500 rpms, how fast can I feed it while doing a 0.020" deep cut > per pass without breaking it? Slower and deeper, or shallower and faster for > best tool life?
Unfortunately you could use a LOT more spindle speed for an 1/8" end mill. If you can keep it lubed I think you should try no more than .060 deep (half a diameter) and you should turn up the spindle all the way and try feeding faster and faster until you break the first one. Then back off 25%. I think you might even be able to get up to 10 ipm or so (.002/tooth) depending on the stoutness of your machine. If it wiggles around much, you'll break the tool much faster since it'll sometimes try to take huge bites. I know how tempting it is to be conservative and make dust instead of chips, but it works so much better if you make chips. If you got a 10-pack, I recommend you don't worry about experimenting and sacrificing one or two! ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
