I'm writing a little Python program to give me RPM and IPM for twist drills. I have found some conflicting and some very old charts for feed per revolution like this one:
http://www.free-ed.net/sweethaven/IndustrialTech/machinist01/pics/ch04.h1.gif I use mostly screw machine drills with 135° split point in my mill and lathe. Does anyone have a better chart or a formula for feed per rev? The little program is here: http://gnipsel.com/files/sfc/ I still need to add an RPM limit and a zillion other things... JT ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
