DRILL BIT

A drill bit for cutting successively larger holes in a substrate includes a conically-shaped body having first and second cutting flutes extending along the length of the body. The first cutting flute includes a first cutting edge and the second cutting flute includes a second cutting edge. The firs...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WHITE, CHRISTOPHER L
Format:	Patent
Sprache:	eng ; fre
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:	A drill bit for cutting successively larger holes in a substrate includes a conically-shaped body having first and second cutting flutes extending along the length of the body. The first cutting flute includes a first cutting edge and the second cutting flute includes a second cutting edge. The first and second cutting edges are offset relative to each other to create a cutting angle adapted to reduce chatter. L'invention porte sur un foret qui permet de couper, dans un substrat, des trous de plus en plus grands, et qui comprend un corps de forme conique présentant des première et seconde cannelures de coupe qui s'étendent selon la longueur du corps. La première cannelure de coupe présente une première arête de coupe et la seconde cannelure de coupe présente une seconde arête de coupe. Les première et seconde arêtes de coupe sont décalées l'une par rapport à l'autre pour créer un angle de coupe pouvant réduire le broutage.