DRILLING TOOL
A drilling tool is provided to make the shape simple, to make manufacturing and inspection easy, to bore a minute diameter hole and to prevent the breakage. A drilling tool comprises a first spiral fragment exhaust groove(1) and a second spiral fragment exhaust groove(2), land portion(3,4) installed...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | A drilling tool is provided to make the shape simple, to make manufacturing and inspection easy, to bore a minute diameter hole and to prevent the breakage. A drilling tool comprises a first spiral fragment exhaust groove(1) and a second spiral fragment exhaust groove(2), land portion(3,4) installed between the spiral fragments exhaust grooves, an even front end surface(5) without the ridge intersecting with the tool central axis, crossing ridge parts(6, 7) with the spiral fragments exhaust groove(1) and the most protrusive part of the front end surface(5). |
|---|