From batch size 1

Highly cost-effective for small quantities

Lead screws that are required in small numbers are produced by whirling. This is a machining process in which a rotary tool rotates around the bar stock. As it turns, the rotary tool is pushed out of the axis centre, thereby cutting a chip out of the raw material. If the rotary tool is then provided with an axial feed, a thread is created.

For thread whirling, a whirling unit that can be operated on various machining tools is normally used. Whirling is used mainly for soft machining to produce trapezoidal screw drives.

Advantages of the whirling method:

• The same tools can be used for different diameters, profiles and leads
• Low tooling costs
• Cost effective for small batch sizes