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Benefits of Thread Mills

Left and right handed threads Thread mills are not left hand or right hand specific. While the thread mill is interpolating, the thread mill must move up or down 1 pitch in the Z axis to create the thread’s helix. If the Z axis is not moving, the thread mill will just produce grooves inside of the hole. No more ordering a special left handed tap. One thread mill provides multiple solutions. Internal and external threads Unlike tapping, threads can be milled inside of the hole or on the outside of the material; however, not all thread forms have identical details for their internal and external mating surfaces. Some threads may require an internal or external specific thread mill. Low horsepower required The diameter of a tap is completely engaged in the hole and requires more torque especially on large diameter threads. Cutting large diameter threads with coarse pitches becomes even more difficult. Thread mills only cut a portion of the circumference at a time which significantly reduces the torque and horse power requirements.

Left

Right

Internal

External

THREAD MILLING REFERENCE GUIDE | 7

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