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    Thread Whirling

    Features

    • NTK's unique patented design technology makes precise and correct inserts the first time, without any redesign or remanufacture even if it is a multiple-lead thread
    • Sharp cutting edges produce a better surface finish and longer tool life than competitor's inserts

    Form Double-lead or Multiple-lead with Single Pass

      Double-lead threads Triple-lead threads
    Work Bone screw Worm gear
    Work material Ti-6Al-4V ELI brass
    Work
    appearance
    Work appearance Work appearance
    Insert
    appearance
    Insert appearance Insert appearance
    Major Dia. Ø.157"(4.0mm) Ø.278"(7.0mm)
    Minor Dia. Ø.094"(2.4mm) Ø.185"(4.7mm)
    Lead
    [Pitch×No.?of Lead]
    .135"(3.42mm)
    [.067"×2(1.71mm×2)]
    .193"(4.9mm)
    [.064"×3(1.63mm×3)]
    • Can reduce cycle time by more than half
    • NTK can achieve what other competitors cannot
    Double-lead Bone Screw Process Example
    1. 11st thread whirl at taper part
    2. 2Rotate the bar 180°and whirl the 2nd thread on same part as 1
    3. 3Thread whirl whole straight part
    4. 4Thread whirl at very last part to get two-exits, after back of bar has been backed up a half lead (one pitch) and rotated 180º

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