Sandvik Coromant Threading - Manual (Page 35)

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2. Applications – Thread milling
Thread milling produces threads with the circular ramping move-
ment of a rotating tool. Here, the lateral movement of the tool in
one revolution creates the thread pitch.
Although not as widely used as thread turning; thread milling
achieves high productivity in certain applications and offers an
advantageous alternative to thread tapping.
Thread milling should always be the application of choice
when:
• Machining asymmetric/non-rotating components
• Machining materials causing chip breaking and chip evacuation problems
• Machining tough materials creating high cutting forces
• Machining against a shoulder or close to the bottom of a blind hole
• Machining thin-walled components
• Component set-ups are unstable
• You need to minimize tool inventory
• You do not want to risk tap breakage on expensive parts – as thread mills can always be
removed from the component totally.
Thread milling requires a machine tool capable of simultaneous movement in the X, Y and
Z-axis direction.
Thread milling