Tool crown and glass product or glass ceramic product that can be manufactured using the tool crown

摘要

A tool head capable of introducing deep recesses into hard and brittle material such as glass and glass ceramics is provided. The tool head includes a hollow cylindrical abrasive body merging into a hollow shank. The hollow cylindrical abrasive body has an end face with a central abrasive area at the location of a cylinder axis. The central abrasive area is connected with the inner wall surface of the hollow cylindrical abrasive body by at least one web. The end face of the abrasive body, the web, and at least a portion of the outer wall surface of the abrasive body are covered with abrasive. The hollow shank has at least one opening to the interior between the at least one web and the inner wall surface of the abrasive body.