Cylindrical drill body for center drill for hole saw, has front-sided cutting teeth for cutting drill core, where cutting body is arranged with cutting edge at inner side of drill body

摘要

The cylindrical drill body (1) has front-sided cutting teeth (3) for cutting a drill core. A cutting body (4) is arranged with a cutting edge (5) at the inner side (6) of the drill body. The cutting body is displaced opposite to the inner side of the drill body in a radial manner. An independent claim is also included for a center drill with a lateral area.