| 摘要 |
Tubular blank (50) is drilled, to give a chip groove, supply channel and sharp edged corner. Tubular blank (50), preferably in a cold state, is subjected to forming forces by simultaneous application of several radially oscillating and axially moving forming tools (56) in such a way that at least one chip groove and at least one supply channel and/or at least one joint is formed in the interior of the drill body. The resultant drilling tool produced as a shaped body by rotary hammering out of tubular blank, and is provided with at least one supply channel and at least one sharp edged corner. |
| 申请人 |
KOMET PRAEZISIONSWERKZEUGE ROBERT BREUNING GMBH, 74354 BESIGHEIM, DE |
发明人 |
BOLKART, DIETMAR, 74321 BIETIGHEIM-BISSINGEN, DE;SCHEER, GERHARD, 74369 LOECHGAU, DE;BAXIVANELIS, KONSTANTIN, 74354 BESIGHEIM, DE;KOECHER, MICHAEL, 70188 STUTTGART, DE;KRUSZYNSKI, JACEK, 70190 STUTTGART, DE |
