On 7/21/14 10:13 , John Thornton wrote: > 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...
That's great! I usually use this one: http://zero-divide.net/index.php?page=fswizard But i'd much prefer to have an open-source locally-runnable speed/feed calculator like yours... -- Sebastian Kuzminsky ------------------------------------------------------------------------------ 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
