At 12:11 PM 5/20/2008, you wrote: >Mark Wendt (Contractor) wrote: > > > > Trying to wrap my mind around this tool. One of the bullet points says > > that only one tool needed for right or left hand threads. Howdeydodat? > >It is not like a tap, it has no thread lead. All the teeth are >in rings. The tricks is it only touches the OD in one line >along the length of the hole. It can do EXTERNAL threads the >same way, you orbit around the OD of a post and it will thread >the outside. The spindle needs to extend or retract in synch >with the rotation of the orbit to develop the correct thread pitch. > >Jon
And when you understand a thread mill you can look at the Thriller tools which have a drill point and cutting edges for chamfering the hole. Some have a drill point and some types are like a center cutting end mill and make the hole and threads at the same time. http://www.mmsonline.com/articles/019603.html http://www.moldmakingtechnology.com/articles/120202.html __________ 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
