Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg

Peter Marz

Ulrich Krenzer

The invention proposes a drill bit () leaving at least one main cutting edge (') and at least one center cutting edge (&#x2032;), wherein the drill bit () comprises a longitudinal axis (), and wherein the at least one main cutting edge (&#x2032;) and the at least one center cutting edge (&#x2032;) are each assigned a rake face (&#x2032;). The drill bit () is characterized in that the rake face (&#x2032;) assigned to the at least one center cutting edge (&#x2032;) has at least two part faces (&#x2032;) which&#x2014;as seen as perpendicular to the longitudinal axis () of the drill bit ()&#x2014;form an obtuse angle with one another, so that the at least one center cutting edge (&#x2032;) comprises at least two part cutting edges (&#x2032;).

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Dietenheim, Germany

Peter Marz