Patent ID: 9180530
Filing Date: 2015-11-10
Classification: B23B,B23C,Y10T

Abstract:
1. A rotary tool comprising: a main tool body which extends along a center longitudinal axis, the main tool body including a conical drill point having a first drill diameter, and a step spaced from the conical drill point along the center longitudinal axis having a second drill diameter larger than the first drill diameter; a flute formed in the main tool body; an insert seat formed in the step of the main tool body and formed in a wall of the flute; and a cutting insert disposed in the insert seat, the cutting insert comprising a generally planar body portion made of a superhard material such as PCD or PCBN; and a contour formed on an edge of the generally planar body which is structured to engage a correspondingly shaped portion of an insert seat of a tool body in a manner that rotationally locks the cutting insert with respect to the tool body, wherein the contour is formed in the manner of a piece of a puzzle and includes a studlike continuation which projects from the edge of the generally planar body and which is structured to be disposed in a correspondingly shaped constriction extending outward from an edge of the insert seat, wherein, for fixing the position of the cutting insert with respect to the main tool body, the insert seat includes an abutment wall which has a contour for positioning the cutting insert in a rotationally locked manner, wherein the contour of the abutment wall is formed in the manner of a piece of a puzzle and the insert seat includes a constriction which cooperatively engages the stud-like continuation extending from the cutting insert.