Drilling-open tool with a drilling-open head for drilling open a bore

摘要

The drilling-open head 10 of the drilling-open tool is arranged at the front end of a tool body 20. A fine-machining device 11 is located behind the drilling-open head 10. The tool body 20 has supporting strips 16 which are so long that, during the full stroke of the drilling-open tool, they are guided in a guide bush 17 over a sufficient part of their length. <IMAGE>