Kotoučové frézy, Woodruffovy

Woodruff cutters are used for milling (cutting or shaping) woodruff key slots in materials such as steel and aluminium. Woodruff key slots are a pocket intended to accommodate a key - an element used to connect a rotating machine element to a shaft. The whole system is called a keyed joint. A keyed joint allows two joined parts to move securely.

How do woodruff cutters work?