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Thread tools \ Technical introduction – thread milling

Female thread creation: Milling cutter

The development of computer-controlled machines has made the thread milling procedure another
option for creating female threads. The thread is produced by the helical diagonal immersion of a
rotating tool. In the process, the axial movement of the tool in one revolution produces the pitch. For
this procedure, a CNC machine with at least three axes is required (XYZ).

Advantages, tool cost minimisation: Disadvantages:
ƒ right-hand and left-hand thread can be manufactured ƒ machine requirements (XYZ axes)

with a tool ƒ machining times generally longer in
ƒ thread milling cutters cover different threads with the series production

same pitch ƒ limited experience of the user in
ƒ for partial thread profi les, a wide range of threads can be thread milling
produced with a cutting insert
Advantages, process reliability:
ƒ Extremely high process reliability with very expensive
components
ƒ Reliable process solution for problem materials with

poor chip breaking and diffi cult chip formation
ƒ First choice with thin-walled workpieces or unstable
clamping operations
ƒ High thread quality
ƒ Thread can be made right to the base of a blind hole
ƒ Radius compensation programming enables thread P
tolerance to be adjusted easily

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 133

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