CORE DRILL BIT WITH IMPROVED REMOVAL OF THE DRILLED CORE

Drill bit (20) including a drilling shaft and a cutting portion having a first drilling segment (23-1) and a second drilling segment (23-2). The first drilling segment (23-1) has a first inner lateral surface (28-1) with a first inner distance (B1(φ), h)), and the second drilling segment (23-2) has...

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Bibliographische Detailangaben
Hauptverfasser:	SZABÓ, József, HOOP, Matthaeus, GRETHER, Alexander, SCHLAG, Andreas Oliver, TOLDO, Cliff, STRACKE, Jens, SONDEREGGER, Marcel
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	Drill bit (20) including a drilling shaft and a cutting portion having a first drilling segment (23-1) and a second drilling segment (23-2). The first drilling segment (23-1) has a first inner lateral surface (28-1) with a first inner distance (B1(φ), h)), and the second drilling segment (23-2) has a second inner lateral surface (28-2) with a second inner distance (B2(φ, h)) from the longitudinal axis (24) of the drilling shaft. The first inner lateral surface (28-1) is formed as a portion of a first inner cone (34-1) which tapers in the direction of a first upper side (32-1) opposite to the underside (31-1) of the first drilling segment (23-1).