Drill bit for use in drilling fixture for superimposing drills, has circular base body forming circular cutting surface, which is provided with cutting elements partially formed as point cuts and as surface cuts

摘要

The bit has a circular base body (1) forming a circular cutting surface (2), which is provided with cutting elements. The cutting elements are partially formed as point cuts (3) and as surface cuts (4), where the surface cuts form a circular cutting edge. Additional cutting elements are located on a peripheral side of the base body, where the additional cutting elements are partially formed as the point cuts and as the surface cuts. The surface cuts are formed with straight cutting edges aligned in a longitudinal-axial direction.