Hard alloy drill bit for reaming

The utility model discloses a hard alloy drill bit for broaching, and belongs to the technical field of broaching drill bits. Comprising a base body, the top of the base body is provided with a drill tip, the outer wall of the drill tip is provided with an arc blade and a fixed connection edge, the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI WEIBIN, ZHANG KAIYONG, ZHANG LUFEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORY MACHINES OR APPARATUS BORING CUTTING CUTTING-OUT DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING HAND CUTTING TOOLS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR NAILING OR STAPLING MACHINES IN GENERAL PERFORATING PERFORMING OPERATIONS PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FORWOOD OR SIMILAR MATERIAL PUNCHING SAFETY DEVICES, e.g. THOSE FOR SAWS SEVERING SEVERING BY MEANS OTHER THAN CUTTING STAMPING-OUT TRANSPORTING TURNING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	The utility model discloses a hard alloy drill bit for broaching, and belongs to the technical field of broaching drill bits. Comprising a base body, the top of the base body is provided with a drill tip, the outer wall of the drill tip is provided with an arc blade and a fixed connection edge, the side wall of the fixed connection edge is provided with a first scraping blade, the bottom of the drill tip is provided with an inclined face, the side wall of the inclined face is provided with an inclined groove, the outer wall of the base body is provided with a triangular edge, the side wall of the triangular edge is provided with a second scraping blade, and the side wall of the second scraping blade is provided with a long groove. Cutting edges are arranged on the outer wall of the foundation pillar. The drill tip provided with the arc blade and the first scraping blade is matched with the second scraping blade, so that the drill bit can quickly enter a hole during reaming, and the use convenience of the dril