Drilling tool

This application relates to a twist drill for use in a machine tool with a major cutting edge divided into two partial cutting edges by a chisel edge wherein longitudinal cutting edges extend along the length of the drill such that the first longitudinal cutting edge makes a rough cut and the second...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KAUPER HERBERT R, KRENZER ULRICH F
Format:	Patent
Sprache:	eng
Schlagworte:	BORING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TURNING
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Beschreibung
Zusammenfassung:	This application relates to a twist drill for use in a machine tool with a major cutting edge divided into two partial cutting edges by a chisel edge wherein longitudinal cutting edges extend along the length of the drill such that the first longitudinal cutting edge makes a rough cut and the second longitudinal cutting edge makes a finishing cut during operation.