NUTENFRÄSER ZUR SCHNELLVORSCHUBBEARBEITUNG MIT GERINGER EINDRINGTIEFE

摘要

The drill (10) has a ceramic head (16) fixed at an end of a carbide body (12), where the drill presents conicity of 3 degrees. A draw surface profile is formed by intersection of a lower draw surface with a plane passing via a drill axis. The profile is in convex shape and has curvature radius of 12 mm. A radial cutting angle between a front cutting surface (A-gamma) of each tooth of the head and a reference plane is -5 degrees. The angle is measured in a working plane (Pf) passing via a point of a main cutting edge (24) of the tooth. The cutting and draw surfaces form the cutting edge. An independent claim is also included for a method for drilling a composite or super alloy piece.