Miniature drill bit

A micro drill bit comprises a drill tip part, the drill tip part comprises two short chisel edges which are arranged in a central symmetry mode, at least one first cutting edge with the gradient different from that of the short chisel edges is arranged at the ends, away from each other, of the short...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU LIANDONG, HU CHENYI, YAO MIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING
Online-Zugang:	Volltext bestellen
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