Patent ID: 7192224
Filing Date: 2007-03-20
Classification: B23B,B23C,Y10S,Y10T

Abstract:
1. A drilling tool comprising: a base body rotatable about a drilling axis and having at least two plate seats arranged on a front face thereof; cutting plates capable of being interchangeably inserted into the plate seats, the cutting plates each having a machining face and a clearance face adjoining a principal cutting edge, a seat face facing away from the clearance face, and a guiding land adjoining radially on the outside through each edge the machining face and the clearance face, the cutting plates each having a hole that extends through the clearance face and the seat face for receiving a retaining screw, the retaining screw capable of being screwed into threaded bores that open to the front face of the base body in the area of a respective one of the plate seats, wherein each of the holes have their axis aligned perpendicularly to the clearance face of the associated cutting plates, and wherein the axes of the threaded bores are aligned inclined with respect to the drilling axis and inclined to each other in the base body, wherein the clearance face and the seat face of the cutting plates are aligned in parallel planes, and the axis of the hole is aligned perpendicularly to the seat face, and wherein the axes of the threaded bores are aligned inclined to the drilling axis and to each other, and the axes of the threaded bores in the base body are oriented so that the axes thereof do not intersect the drilling axis and do not intersect each other.