Tool for milling tapered threads with blunt start

Abstract

A tool for cutting tapered threads, said tool being mountable on a tool holder that is in turn positioned onto a spindle of a milling machine controlled by a CNC. The CNC rotates and moves the tool in a pattern to cut a tapered thread on a male connector. The tool includes a step or projection of slightly greater dimension than the threads, and at a position slightly above the threads. During the same operation that the threads are being cut, the tool severs the thin end of the tapered threaded connector to form a blunt end.

1 - 3 . (canceled) 
     
     
         4 . A tool having a cylindrical shank or rod adapted to have one end of said rod mounted onto a milling machine,
 a) milling teeth formed on the other end of said rod;   b) side rakes formed adjacent said teeth which rakes fade or angle into the periphery of said rod to form tapered threads;   c) said rod including a cylindrical section above said teeth and in adjacent relation to said teeth; and   d) a cutting shoulder formed on said cylindrical section to cut and blunt the end of said tapered thread formed by said tool as the terminal part of the same operation.   
     
     
         5 . A method of forming blunt ends for tapered thread connector consisting of the steps of:
 a) cutting tapered threads tapering from a first thickness to a feathered or thin end; and   b) cutting the thin end of the tapered threads in the same operation as the cutting operation for forming said blunt ends.   
     
     
         6 . A tool for mounting on a milling machine to form tapered threads on a male connector comprising,
 a) an elongated rod having one end mountable on a tool holder of a CNC machine;   b) tapered thread cutting teeth formed at the other end of the rod, said teeth cutting said thread from a first thickness to a feathered or thin end; and   c) a cutting shoulder formed on said rod in adjacent relation to said teeth for cutting said thin end of the formed tapered thread during the same operation as the thread cutting operation to provide a blunt end to said tapered thread.