At 04:35 AM 5/21/2008, you wrote: >I think I have a grasp of how this thing works now. My only question >left is, if the "teeth" are in rings, and there are multiple rings >(and assuming the thread mill is spinning at that same time as the x >and y axes are moving), how does the tool keep from munging the >threads that are already cut if there is no "screw" ramp to >them? From the looks of the thread mill in the picture, the thread >mill's "rings" all seem to be parallel with each other, and have no screw >ramp. > >Mark
When using the thread mill the "screw ramp" comes from doing a linear Z move while doing the circular move in the X,Y plane. Thread mills tend to have extreme amounts of relief angle on the cutting edge to avoid rubbing in the tight spots they are used in. Some cutters have teeth that look a lot like the top half of a birds beak (hawks or owls). That form relief is one reason they are so expensive. __________ Andre' B. Clear Lake, Wi. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
