Tungsten Carbide Indexable Drill Bit Introduction

Tungsten carbide indexable drill bit, also called short-hole drill or U drill, is a kind of high-efficiency drilling tool. In recent years, it has been widely used in various kinds of numerically-controlled machining tools, machining centers etc. This kind of drill bit has two indexable inserts installed asymmetrically, forming inner edge and outer edge which are responsible for the machining of internal holes and external holes respectively. When the hole diameter is relatively large, more blades can be installed.

Tungsten carbide indexable drill bit is suitable for high-speed cutting and has high machining quality and good chip removal property. It can be classified into six categories according to its blade shapes, chip removal groove shapes, structure, machining characteristics and so on.

I.    Being classified into quadrangle, convex trilateral, rhombus, hexagon drill bit etc. according to blade shapes.
II.    Being classified into straight flute drill bit and spiral flute drill bit according to the chip removal grooves.
III.    Being classified into cylinder shank drill bit and morse taper shank drill bit according to different drill bit shank shapes.
IV.    Being classified into solid, modular and split type drill bit according to the structure.




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