Page 15 - Demo

13GENERAL DRILLING HANDBOOKPoint (cutting part) - The functional part of the drill comprised of chipproducing elements. The major cutting edges, chisel edge, faces and flanks are therefore elements of the point (cutting part) (Figure 1.2.13).Figure 1.2.12Point (cutting part)Flank (major flank) - The surface on the drill point bounded by the major cutting edge, the fluted land, the following flute, and the chisel edge (Figure 1.2.13).Face - The portion of the surface of a flute adjacent to the major cutting edge and on which the chip when formed during the cutting operation. (Figure 1.2.13).Major Cutting Edge (lip) - The edge formed by the Intersection of a flank and face (Figure 1.2.13).Wedge - The portion of the point enclosed between a face and a flank associated with the major cutting edge (Figure 1.2.13).Figure 1.2.13flank (major flank) facemajor cutting edge (lip)wedge faceflank (major flank)