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Classification of drill bits

Classification of drill bits

  • Jun 3,2020

A drill is a tool with rotating and cutting ability at the end. It is usually made of carbon steel SK or high speed steel SKH2, SKH3, etc. after milling or rolling, quenching and heat treatment, and then grinded. It is used for drilling on metals or other materials. It can be used in drilling machine, lathe, milling machine, hand drill and other tools. Bits can be divided into the following types according to different types:
A. Classification by Structure
1.“BESTWIN” Integral bit: The top, body and handle of the drill are made of the same material as a whole.
2. End-welded bit: The top part of the drill is welded by carbide.
B. Classification by drilling fir
1. Straight shank bit: The diameter of the bit is less than 13.0 mm, and the straight shank is used.
2. Taper shank bit: The shank of the bit is tapered. Generally, the taper of the shank is Mohr's taper.
C. Classification by use
1.“BESTWIN” Central bit: It is generally used for drilling the central point before drilling, and the front cone faces are 60 degrees, 75 degrees, 90 degrees, etc.
2. “BESTWIN”Twist bit: The most widely used bit in industrial manufacture.
3. Ultra-hard bit: The front end of the drill body is made of super-hard alloy tool material, which is used for drilling of processing materials.
4. Oil hole drill: There are two small holes in the drill body, through which the cutting agent reaches the cutting edge to take away heat and chips. The general work object of the drill is rotated while the drill is stationary.
5.“BESTWIN” Deep-hole drills: They were first used for drilling barrels and stone-clad barrels, also known as barrel drills. Deep hole drill is straight groove type, cutting more than a quarter of the round pipe to generate edge debris removal.
6. "BESTWIN" cemented carbide multi function drill bits: with very high quality, to achieve the quality level of well-known brands in the tool industry. It can drill holes in metal, ceramic tile, marble, wood, concrete, glass, etc. Suitable for building decoration, DIY, etc.

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