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Emuge Corporation’s series of Miniature Solid Carbide Thread Mills are designed for easy machining of difficult materials such as stainless steels, titanium, K-Monel, Hastelloy and Inconel. The line is suitable for a variety of applications including those in the medical, aerospace, defense and computer industries.
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The thread mills are said to virtually eliminate the possibility and consequences of tap breakage. Thread mills are available in both one-flute and three-flute versions, with the latter being suited for high-volume output needs. The thread mills remove manual operations by eliminating the need for hand tapping during full bottom-threading applications. Bottom threading can be performed to within 1 pitch. Externally supplied coolant eliminates the need for thread cutting oil, so parts and coolant reservoirs are not contaminated.
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According to the company, the thread mills include an easily controlled pitch diameter and offer precise thread-depth controls to 2 × D, so that one tool can be used for both through and blind holes. Overall length of the thread mill is 1 5/8" with a shank diameter of 1/8".
Many cutter designs are available, and variable teeth spacing (or variable pitch) cutters can be used to influence milling stability. Let’s discuss why teeth spacing affects stability.
